https://wiki.nhrl.io/wiki/api.php?action=feedcontributions&feedformat=atom&user=JustCuzRoboticsNHRL - User contributions [en]2026-04-28T03:47:22ZUser contributionsMediaWiki 1.41.1https://wiki.nhrl.io/wiki/index.php?title=Division_V4&diff=23902Division V42026-03-13T19:02:30Z<p>JustCuzRobotics: /* Build Details */</p>
<hr />
<div>===Robot Facts===<br />
[[File:Division V4.5 fork config.jpg|alt=|thumb|Division V4.5 fork config Mach 2026]]<br />
{| class="wikitable" style="width: 60%"<br />
!Builder/Driver!![[Seth Schaffer]]<br />
|-<br />
!Team!![[Just 'Cuz Robotics]]<br />
|-<br />
|Weight Class||[[3lb Weight Class|3lb]]<br />
|-<br />
|Body Material||TPU & UHMW + Carbon Fiber/SRPP<br />
|-<br />
|Weapon||Vertical Spinner<br />
|-<br />
|Weapon Drive||Prototype [https://grabcad.com/library/rdy-5536-battle-ready-combat-robotics-hubmotor-just-cuz-robotics-1 RDY-5536 Hubmotor] <br />
|-<br />
|Drive||2WD with [https://justcuzrobotics.com/products/blitz-pro-bulletproof-brushless-24mm-gearmotors Blitz Pro motors]<br />
|-<br />
|Power||GNB 4S 850mAh LiHV<br />
|}<br />
<br />
==Build Details==<br />
For more info and a history of all past versions, check out this video: "'''[https://youtu.be/v_e7W72rzpQ This Battlebot Took 6 Years to Perfect]"'''<br />
<br />
Division V4.0 competed in January 2024 at NHRL and then V4.5 competed at a number of other competition in the greater boston area in 2024-2025. However, Division didn't return to NHRL until March 2026, causing it to enter the March event with no official ranking as it had no fights in 2025 at NHRL. <br />
<br />
For the 2026 event, Division had a number of experimental changes including a new wheely-bar rear armor design and using SRPP in place of carbon fiber for the base and lid. These changes mostly worked well, but there are a lot of design considerations for a possible version V5.0 in the future. <br />
<br />
[[File:Division V4.5 two copies march nhrl 2026.jpg|alt=Division V4.5 at March NHRL 2026|thumb|Division V4.5 at March NHRL 2026]]<br />
<br />
{{Bot Stats|bot=Division_V4|class=3lb}}<br />
<br />
==Select Fights==<br />
Video l<nowiki/>inks Coming Soon!<br />
<br />
==Gallery==<br />
<gallery><br />
File:Division V4.0 January 2024.jpg|January 2024<br />
</gallery><br />
<br />
[[index.php?title=Category:3lb Bots]]<br />
[[index.php?title=Category:US Robots]]<br />
[[index.php?title=Category:Vertical Spinners]]<br />
[[index.php?title=Category:NHRL 2024]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division_V4&diff=23901Division V42026-03-13T19:00:15Z<p>JustCuzRobotics: /* Build Details */</p>
<hr />
<div>===Robot Facts===<br />
[[File:Division V4.5 fork config.jpg|alt=|thumb|Division V4.5 fork config Mach 2026]]<br />
{| class="wikitable" style="width: 60%"<br />
!Builder/Driver!![[Seth Schaffer]]<br />
|-<br />
!Team!![[Just 'Cuz Robotics]]<br />
|-<br />
|Weight Class||[[3lb Weight Class|3lb]]<br />
|-<br />
|Body Material||TPU & UHMW + Carbon Fiber/SRPP<br />
|-<br />
|Weapon||Vertical Spinner<br />
|-<br />
|Weapon Drive||Prototype [https://grabcad.com/library/rdy-5536-battle-ready-combat-robotics-hubmotor-just-cuz-robotics-1 RDY-5536 Hubmotor] <br />
|-<br />
|Drive||2WD with [https://justcuzrobotics.com/products/blitz-pro-bulletproof-brushless-24mm-gearmotors Blitz Pro motors]<br />
|-<br />
|Power||GNB 4S 850mAh LiHV<br />
|}<br />
<br />
==Build Details==<br />
For more info check out this design overview video: https://youtu.be/v_e7W72rzpQ<br />
<br />
Division V4.0 competed in January 2024 at NHRL and then V4.5 competed at a number of other competition in the greater boston area in 2024-2025. However, Division didn't return to NHRL until March 2026, causing it to enter the March event with no official ranking as it had no fights in 2025 at NHRL. <br />
<br />
[[File:Division V4.5 two copies march nhrl 2026.jpg|alt=Division V4.5 at March NHRL 2026|thumb|Division V4.5 at March NHRL 2026]]<br />
<br />
{{Bot Stats|bot=Division_V4|class=3lb}}<br />
<br />
==Select Fights==<br />
Video l<nowiki/>inks Coming Soon!<br />
<br />
==Gallery==<br />
<gallery><br />
File:Division V4.0 January 2024.jpg|January 2024<br />
</gallery><br />
<br />
[[index.php?title=Category:3lb Bots]]<br />
[[index.php?title=Category:US Robots]]<br />
[[index.php?title=Category:Vertical Spinners]]<br />
[[index.php?title=Category:NHRL 2024]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_V4.5_fork_config.jpg&diff=23900File:Division V4.5 fork config.jpg2026-03-13T18:56:01Z<p>JustCuzRobotics: </p>
<hr />
<div>Division V4.5 fork config</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_V4.5_two_copies_march_nhrl_2026.jpg&diff=23899File:Division V4.5 two copies march nhrl 2026.jpg2026-03-13T18:54:47Z<p>JustCuzRobotics: </p>
<hr />
<div>Division V4.5, two copies at March NHRL in 2026</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Shameless_Self_Promotion&diff=20149Shameless Self Promotion2025-07-07T20:09:09Z<p>JustCuzRobotics: All the fight history</p>
<hr />
<div>[[File:WEB SSP 2.0 nhrl with vert.jpg|thumb|Shameless Self Promotion 2.0 with Lifter and Vertical Spinner modules]]<br />
<br />
== Shameless Self Promotion ==<br />
Shameless Self Promotion (a.k.a. SSP) is a Beetleweight control bot designed by Seth Schaffer of Team 'Just 'Cuz Robotics, and the test platform for the [https://justcuzrobotics.com/shop/p/ssp-robot-kit SSP Combat Robot Kit]. SSP competed in January and March 2023 NHRL events with a V0.9 and V0.95 design of the SSP kit. A version with the same components as the public release of the kit competed in August 2023 reaching the quarterfinals. SSP went onto compete at Bot Brawl in Canada in 2023 and again in 2024 where it placed 3rd, just barely losing out to Caldera. Most recently on June 7th, 2025, the very first SSP 2.0 redesigned copy of the bot competed and went 3-1 with a win over the 3lb current rank 1 bot, Mako.<br />
<br />
=== January 2023 NHRL - New Bot Event ===<br />
In January NHRL, SSP had a few teething issues but still performed very well with wins over lifter bot Slamson 2Chicken 2Huffin, Peter Bar vertical spinner kit Basado, and in a grudge match Fingertech Beater Sadiq, and losing only a JD split decision against the undercutter Off Beat, despite having disabled Off Beat's spinner and a drive side. The main issue SSP faced was lifter durability in January, but nothing on the whole robot broke except a few bent or damaged screws and the aluminum servo horn.<br />
<br />
=== March 2023 NHRL ===<br />
With the official announcement of the kit in January and preorders flooding in, SSP needed to get a few upgrades to make the kit even more reliable by March. So a steel replacement servo horn was fitted and a few other minor improvements were implemented. Although 25 kit chassis were already on hand SSP ran with the same exact battle damaged billet UHMW chassis as in January to test the longevity of that component. To help counter beater bars, we turned to [https://www.recr.us/ RECR.us] who waterjet a set of AR600 claw forks to use against beater bars for about $30. A third V0.9 chassis and collection of kit parts with orange TPU was sent to Matthew Lantry to compete at this event as SSP (Shameless Self Advertising). SSA was running the V1.0 motherboard instead of the beta versions but was otherwise the same as SSP. Unfortunately Seth forgot to bring any spare DartBox Dragon drive motors so we had to pray we didn't break any (spoiler - we didn't). <br />
[[File:SSP White BG.jpg|thumb|Shameless Self Promotion V1 in a photo box with a white background and arm raised]]The March event was a ton of fun and SSP went super deep, winning fights against many brutal spinners. SSP continued its breaking undercutter streak, disabling the weapons of Plot Twist and CatTastrophe 2. It managed to outlast Saber for a KO victory and despite a malfunctioning lifter, bullied Blackbird all around the arena for a split JD win. It even got to prove its lifter was overengineered by lifting and shoving 5.4 pound Pawsitively Hissterical around the arena, and accidentally ripping out its battery just before the 3 minute mark. However some gremlins and electrical issues ultimately led to its demise against Apex in the top 16, for an overall 9th place finish among the massive 164 bot field.<br />
<br />
=== May 2023 Bot Brawl ===<br />
After a few more refinements and changes made to the electronics, SSP also competed at Bot Brawl in Toronto, Canada. This event was an odd test event for Seth as typically he would drive with a ~$160 Radiomaster Zorro transmitter and the drive would be run with a $50 Tarakan dual ESC. For this event Seth chose to run the cheapest setup possible, using the $55 FlySky FS-i6 radio and $25 Budget ESC. While the radio didn't detract from the driving experience much, the ESC certainly was a lot more difficult to get used to as it didn't behave quite the same. Still, SSP was able to beat another kit bot, a D2 kit called Golden Bear in fight 1 easily by sticking it against the wall for a KO. The next match would be far harder, a scary horizontal called Ipsiety in fight 2. The second fight started out well until the bot stopped responding due to an unplugged ESC signal cable. The third fight was against a barely functional meltybrain and a bit of a gimme win for SSP. The fourth was yet another huge challenge, a 4.5lb shuffler horizontal spinner called Come On and Slam with an 18 ounce spinning mass weapon (more than 1 pound!) Despite the odds, SSP managed to tank a bunch of hits, losing its wedge, a wheel, and drive belt, and totaling a chassis, until Come On And Slam had an electrical connection break and died, for another SSP KO win.<br />
<br />
Another change of pace was in order for fight 5, facing another well driven control bot in Monster Mash. Monster Mash was a passive fork bot with no lifter, so SSP was able to demonstrate aggression with its weapon. This was close but SSP won the JD. Fight 6 was another horizontal spinner, this time a normal 3lb one similar to a Vector kit called "Why Can't We Be Friends?" Sadly for the opponent SSP was not feeling friendly and bullied them around the arena for another JD win. <br />
<br />
Fight 7 was a rematch with Ipsiety, but this time with hot glued connections SSP was unstoppable and this fight was much like the last. The 8th and final fight of the day for SSP was against another 4.5lb shuffler horizontal, this time called Noisemaker with an undercutter. Despite also bullying Noisemaker around and taking no real damage besides losing its lifter fork, SSP was declared the loser, as the judging at Bot Brawl is quite damage focused compared to NHRL. Overall this was a pretty successful stress test and the Budget ESC became a staple of the SSP kits while the WEKA that would ultimately supersede it was in development.<br />
<br />
=== August 2023 NHRL ===<br />
At this August event NHRL was once again running a standard double elimination tournament, something that changed in 2024. However, the first fight of the day was against Fallout, another lifter control bot with longer forks that consistently won the ground game, giving SSP its first loss immediately. Despite this SSP managed to rack up win after win, fighting all the way into the quarterfinals. SSP managed to beat Crashfest, a golden dumpster winning robot, Half-Life which was driven by the same driver as Fallout, Nitro Hornet which has been competing for many years, and Radix, a really solid undercutter the body of which Seth printed as a 3D print commission from its driver. Sadly its awesome run was put to an end when facing another longer forked control bot in Ratfish. Still, this was by far Seth's best NHRL showing with any bot and the closest to a podium spot he had yet achieved. And all using a stock kitbot with no spinner, and more than a half pound underweight!<br />
<br />
=== May 2024 Bot Brawl ===<br />
While SSP's alter ego Subtraction was making the rounds at a few other tournaments including the Teams event, Seth opted not to bring SSP to any NHRL events in 2024. However, the Bloodsport team all wanted to head to Toronto yet again, so SSP came along, this time equipped with another Beta electronics setup, an early WEKA dual ESC revision. This ESC handles way better than the Budget could dream of, so Seth was looking forward to a strong showing now that he was no longer playing on hard mode. <br />
<br />
At Bot Brawl 2023, the final was between Bloodsport teammates and father son duo Brian and Glenn Boxell. with Eruption and Caldera. As the only Americans at the event, our team was well representing the USA, and we hoped to do it again with the addition of Ellie and her horizontal spinner bot Reputation and Nik's overhead horizontal Phantom III alongside Seth's SSP. This was going to be some serious competition even if it was just against his own team. <br />
<br />
In the first round SSP had a bye, so Seth sat by and watched as Reputation's battery was ripped out in one hit by another horizontal called Death Muncher, who then moved on to become SSP's first victim, I mean opponent. Death Muncher had serious spinup problems and SSP was not giving it an inch, for a fairly easy win. Fight 2 would be against Bloodsport teammate Nik with Phantom III. Nik's early strategy was to out-fork SSP's wedge so he didn't spin up his weapon for a bit, giving SSP an opportunity to reach out with the lifter and prop Phantom against the wall. Not wanting an unsportsmanlike easy KO, Seth helped his teammate's bot off the wall, and a real fight ensued as Phantom spun up to a terrifying speed. SSP tanked many hits and shoved Phantom around in an exciting battle but managed to win the JD with both bots leaving fully functional. <br />
<br />
Fight 3 pitted undefeated SSP in the winners semifinal against teammate Glenn with the perennial top contender and prior year's finalist Caldera. An extremely unlucky early exchange broke SSP's servo arm and left is stranded upside-down for a pathetic KO loss. Thus began a long path through the loser's bracket. <br />
<br />
Fight 4 was a rematch with an upgraded Ipsiety, but it played out much like their meeting in 2023. Next in fight 5 was a fingertech beater bar named PPK with a bright blue livery which had been kicking bot all day. It's streak was ended however when SSP showed it every edge and corner of the arena with force and jammed its lifter into the beater bar to stop it several times. <br />
<br />
The fifth and final fight of the event for SSP would be a rematch against Caldera, the loser's semifinal after Caldera lost to Eruption in their first meeting. While SSP didn't get damaged for 2:40 of the fight and bullied Caldera around the whole time, sadly in the final seconds a bad hit to a wheel took out one of SSP's drive sides, costing it the fight. Still, Caldera went on to annihilate Eruption in the finals and SSP was mostly unscathed for 3 minutes proving how incredibly durable it would be, with just the DartBox brushed motors holding it back... <br />
<br />
=== SSP 2.0 Redesign ===<br />
[[File:Brushed and Brushless SSP 2.0 internals.jpg|thumb|Brushed and Brushless SSP 2.0 internals]]<br />
Seth took a lot of time off from driving SSP in fights as over 200 kits sold were enough to prove that SSP 1.0 was a capable and competitive design, even moving two and a half years past its date of creation. That said, there is always room for improvement, and improvement is what Seth does with all his products when given the chance. So a complete from scratch redesign of SSP was in order to coincide with the launch of Just 'Cuz Robotics newest, smallest, and lightest drive motors, the Blitz Lite 1604 brushless line. SSP 2.0 kits would now have the option of reusing the 1.0 electronics or stepping up to an SSP Pro Brushless edition sporting a stronger, 60% faster lifter servo and the Blitz Lite motors for drive that both enhanced the kit's durability and shaved 0.1 pounds of weight. The Lites are able to tolerate much higher voltage than the DartBox Dragons as well, making them excellent to pair with the SSP kit's newest module, a vertical spinner. The Vert module allowed the Just 'Cuz RDY-5022-Mini hubmotor to spin a small 3 inch blade, adding some real damage potential without sacrificing on the control bot roots for the SSP kit. With these changes yet to be tested in the arena, June was the time to see if Seth's work had gone to waste!<br />
<br />
=== June 2025 NHRL ===<br />
SSP 2.0 had much to prove, but given it was now no longer an 'active robot' at NHRL since it had not fought in 2024, it entered this event unranked. This led to it being an extremely low seed if it were to enter the bracket. Seth started out the day mostly concerned by his first couple opponents however - first, a rematch from the NHRL Teams event with Trick Or Beater V2. Trick Or Beater V1 fought Seth's bot Subtraction V3 almost exactly 1 year prior and managed to win, so ToB was looking for revenge. However SSP's tried and true claw forks were dominating the ground game the entire match and ToB kept flipping itself over and struggling to self right. A few good shots on SSP caused the PET-CF drive motor mounts to shatter. In the last few seconds SSP lost proper use of both drive sides but was not counted out so it won the JD. Seth had showed up with two copies of the robot that were internally identical save for the modules- one was set with the Vertical Spinner and the other with the standard Lifter and forks. The lifter bot even with fresh motors was struggling to drive consistently due to some unknown gremlins that later turned out to be mostly drive ESC configuration issues. So Seth swapped to the vert bot for fight 2 which had consistently driven better in the test box. Seth was very nervous the drive would stall out again but sooner costing him this next fight against another beater bar in Frogspawn.<br />
<br />
Frogspawn turned out to be a great opponent to test out the vertical spinner against. With a consistently much faster tip speed, almost every Weapon on Weapon engagement went SSP's way and SSP was absolutely dominant in this match although it did still go the full 3 minutes. <br />
<br />
While SSP was 2-0 going into the bracket it still had the lowest seeing possible with that record which meant it could face a really hard first round opponent. It was impossible to know just how hard though, as SSP now had to face the Rank 1 beetle Mako. In an absolute pedal to the metal driving battle, pins were held, sparks few, wheels were worn, and Seth's improvised Tokyo Drift driving style to avoid head on engagements proved effective. SSP managed to eek out a 9-8 unanimous judges decision win over one of the favorites to win it all.<br />
<br />
That said the next matchup wouldn't be easy, a 340mph tip speed horizontal known as Misdirected Aggression. This battle ended up being the most destroyed SSP had ever been coming out of a fight despite still having fully functioning drive. Due to a weird bounce the AR500 wedge was torn off midair and Seth kept smashing SSP's face into MA's fist until at last MA's weapon motor dislodged and SSP came in for lots more pushes and pins. Sadly in the end the damage that SSP's entire front end and lifter suffered were substantial. Still the judging scored 3-3 for damage, and the judges decided MA was more aggressive due to its weapon use throughout the fight. Seth is very proud that his brand new iteration of a tried and true design "didn't suck" and lived up to the unkillable reputation it had earned before. The SSP 2.0 Pro kit is sure to be a force to reckon with at NHRL for years to come. {{Bot Stats|bot=Shameless_Self_Promotion|class=3lb}}<br />
<br />
[[index.php?title=Category:3lb Bots]]<br />
[[index.php?title=Category:US Robots]]<br />
[[index.php?title=Category:Kitbot Progenitors]]<br />
[[index.php?title=Category:NHRL 2023]]<br />
[[index.php?title=Category:Lifters]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Brushed_and_Brushless_SSP_2.0_internals.jpg&diff=20145File:Brushed and Brushless SSP 2.0 internals.jpg2025-07-07T19:53:17Z<p>JustCuzRobotics: </p>
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<div>Brushed and Brushless SSP 2.0 internals</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:WEB_SSP_2.0_nhrl_with_vert.jpg&diff=20135File:WEB SSP 2.0 nhrl with vert.jpg2025-07-07T19:03:09Z<p>JustCuzRobotics: </p>
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<div>SSP 2.0 with both lifter and vertical spinner configs</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division_V4&diff=12347Division V42024-02-20T16:32:08Z<p>JustCuzRobotics: </p>
<hr />
<div>===Robot Facts===<br />
[[File:Division V4.0 January 2024.jpg|alt=|thumb|Division V4.0 Jan 2024]]<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
|Builder||Seth Schaffer, Team Just 'Cuz Robotics https://justcuzrobotics.com/<br />
|-<br />
|Driver||Seth Schaffer<br />
|-<br />
|Weight Class||[[3lb Weight Class|3lb]]<br />
|-<br />
|Body Material||TPU & UHMW + Carbon Fiber<br />
|-<br />
|Weapon||Vertical Spinner + Flywheel counter gyro<br />
|-<br />
|Weapon Drive||Prototype [https://grabcad.com/library/rdy-5536-battle-ready-combat-robotics-hubmotor-just-cuz-robotics-1 RDY-5536 Hubmotor] <br />
|-<br />
|Drive||2WD with protype DartBox Pro 24mm Gearbox + Gecko brushed motors<br />
|-<br />
|Power||GNB 4S 850mAh LiHV<br />
|}<br />
<br />
== Build Details ==<br />
For more info check out this design overview video:<br />
<br />
https://youtu.be/X7UjJuumfek<nowiki/>{{Bot Stats|bot=Sir_Spinny|class=3lb}}<br />
<br />
==Select Fights==<br />
Video links Coming Soon!<br />
<br />
==Gallery==<br />
Images coming soon!<br />
<br />
[[Category:3lb Bots]]<br />
[[Category:NHRL 2024]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division_V4&diff=12337Division V42024-02-20T15:00:05Z<p>JustCuzRobotics: added details</p>
<hr />
<div>===Robot Facts===<br />
[[File:Division V4.0 January 2024.jpg|alt=|thumb|Division V4.0 Jan 2024]]<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
|Builder||Seth Schaffer, Team Just 'Cuz Robotics https://justcuzrobotics.com/<br />
|-<br />
|Driver||Seth Schaffer<br />
|-<br />
|Weight Class||[[3lb Weight Class|3lb]]<br />
|-<br />
|Body Material||TPU & UHMW + Carbon Fiber<br />
|-<br />
|Weapon||Vertical Spinner + Flywheel counter gyro<br />
|-<br />
|Weapon Drive||Prototype [https://grabcad.com/library/rdy-5536-battle-ready-combat-robotics-hubmotor-just-cuz-robotics-1 RDY-5536 Hubmotor] <br />
|-<br />
|Drive||2WD with protype DartBox Pro 24mm Gearbox + Gecko brushed motors<br />
|-<br />
|Power||GNB 4S 850mAh LiHV<br />
|}<br />
<br />
{{Bot Stats|bot=Sir_Spinny|class=3lb}}<br />
<br />
==Select Fights==<br />
Video links Coming Soon!<br />
<br />
==Gallery==<br />
Images coming soon!<br />
<br />
[[Category:3lb Bots]]<br />
[[Category:NHRL 2024]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_V4.0_January_2024.jpg&diff=12336File:Division V4.0 January 2024.jpg2024-02-20T14:56:30Z<p>JustCuzRobotics: </p>
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<div>Division V4.0 January 2024</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division_V4&diff=12335Division V42024-02-20T14:53:56Z<p>JustCuzRobotics: Created page</p>
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<div></div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Subtraction&diff=11779Subtraction2023-10-26T17:04:20Z<p>JustCuzRobotics: Photo</p>
<hr />
<div>[[File:Subtraction Both Configs.jpg|thumb|554x554px|Subtraction with lifter and spinner configs]]<br />
Subtraction is a modular 3lb Robot, as of September 2023 it has two weapon options: lifter, and overhead horizontal module.<br />
=== Robot Facts (September 2023) ===<br />
{| class="wikitable"<br />
|Driver<br />
|Seth Schaffer from Team Just 'Cuz Robotics<br />
|-<br />
|Weight Class<br />
|3lb<br />
|-<br />
|Body Material<br />
|Solid UHMW Billet<br />
|-<br />
|Weapon Module 1<br />
|9" Horizontal Spinner, 3/16" AR500<br />
|-<br />
|Weapon Module 2<br />
|Servo driven lifting arm<br />
|-<br />
|Weapon Motor<br />
|[https://justcuzrobotics.com/products/preorder-jcr-4935-1000kv Just 'Cuz Robotics JCR-4935 Motor]<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
|Drive<br />
|[https://justcuzrobotics.com/products/dartbox-squared-drive?_pos=1&_psq=dragon&_ss=e&_v=1.0&variant=45099914887477 DartBox Dragon 4mm Motors]<br />
|-<br />
|Power<br />
|[https://justcuzrobotics.com/products/3s-550-lipo?_pos=1&_psq=lipo&_ss=e&_v=1.0 3S Lipo] & Just 'Cuz Robotics [https://justcuzrobotics.com/products/motherboard?_pos=1&_sid=2b87bd45c&_ss=r Motherboard]<br />
|}<br />
Subtraction is a work in progress, an experimental test bed for the SSP combat robot kit, and development platform for future weapon attachments.</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Subtraction&diff=11778Subtraction2023-10-26T17:03:15Z<p>JustCuzRobotics: Added info</p>
<hr />
<div>Subtraction placeholder text<br />
<br />
<br />
Subtraction is a modular 3lb Robot, as of September 2023 it has two weapon options: lifter, and overhead horizontal module.<br />
<br />
=== Robot FactsVersion 3.5 (September 2023) ===<br />
{| class="wikitable"<br />
|Driver<br />
|Seth Schaffer from Team Just 'Cuz Robotics<br />
|-<br />
|Weight Class<br />
|3lb<br />
|-<br />
|Body Material<br />
|Solid UHMW Billet<br />
|-<br />
|Weapon Module 1<br />
|9" Horizontal Spinner, 3/16" AR500<br />
|-<br />
|Weapon Module 2<br />
|Servo driven lifting arm<br />
|-<br />
|Weapon Motor<br />
|[https://justcuzrobotics.com/products/preorder-jcr-4935-1000kv Just 'Cuz Robotics JCR-4935 Motor]<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
|Drive<br />
|[https://justcuzrobotics.com/products/dartbox-squared-drive?_pos=1&_psq=dragon&_ss=e&_v=1.0&variant=45099914887477 DartBox Dragon 4mm Motors]<br />
|-<br />
|Power<br />
|[https://justcuzrobotics.com/products/3s-550-lipo?_pos=1&_psq=lipo&_ss=e&_v=1.0 3S Lipo] & Just 'Cuz Robotics [https://justcuzrobotics.com/products/motherboard?_pos=1&_sid=2b87bd45c&_ss=r Motherboard]<br />
|}<br />
Subtraction is a work in progress, an experimental test bed for the SSP combat robot kit, and development platform for future weapon attachments.</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Subtraction_Both_Configs.jpg&diff=11777File:Subtraction Both Configs.jpg2023-10-26T16:50:12Z<p>JustCuzRobotics: </p>
<hr />
<div>Subtraction with its overhead spinner and lifter modules</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Subtraction&diff=11776Subtraction2023-10-26T16:39:24Z<p>JustCuzRobotics: Made the page</p>
<hr />
<div>Subtraction placeholder text</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division&diff=10409Division2023-08-04T18:38:49Z<p>JustCuzRobotics: 3.5 updates</p>
<hr />
<div>Division is a Vertical Disk Spinner 3lb Robot. <br />
===Robot Facts===<br />
[[File:Division 3lb July22.png|alt=|thumb|Division V3.2 (July 2022)]]<br />
Version 3.5 (July 2023-Present)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Driver || Seth Schaffer from [https://www.youtube.com/channel/UCsoZN2VwWJbJ30y2e2sfmnw/ Team Just 'Cuz Robotics]<br />
|-<br />
| Weight Class || [[3lb Weight Class|3lb]]<br />
|-<br />
| Body Material || Solid Aluminum Billet<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
| Drive || [https://justcuzrobotics.com/products/dartbox-squared-drive?_pos=1&_sid=acd589f71&_ss=r DartBox Viper 6mm Motors]<br />
|-<br />
| Power || 4S Lipo & Custom Power Distribution PCB<br />
|}<br />
<br />
<br />
<br />
Version 2.12 (July-November 2021)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Body Material || Titanium & Aluminum with 3D Printed Mounts<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
| Drive ||[https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox]<br />
|-<br />
| Power || 4S Lipo<br />
|}{{Bot Stats|bot=Division|class=3lb}}<br />
<br />
<br />
== Version 3.5 (July 2023 Redesign) ==<br />
With the overall solid performance of Division's weapon system in 2022 but disappointing durability in 2023, a bunch of minor tweaks have been implemented in 2023. While there were few before May 2023, after both Labor Day Disarray in November 2022 and the March NHRL event, the Drivetrain was really struggling to hold up to modern horizonal spinners. The drivetrain now uses Just 'Cuz Robotics own DartBox drive brushed motors with AM32 brushed firmware ESCs. The weapon system was also updated slightly with AM32 firmware on the weapon ESC to improve startup torque and reliability. <br />
== Version 3 (2022 Redesign) ==<br />
Division was always a mean robot to fight, but its explosive power proved to be its own downfall only a little less than half the time. With the V2.X archetype, repairs and maintenance were cumbersome, and with many retrofitted components taking the place of prior ones, the whole structure was really problematic in the end. At the end of 2021 it was retired officially, and a brand new from scratch redesign effort began,<br />
[[File:Division V3 Drivetrain.jpg|alt=Division V3 Drivetrain - This consists of a 3D printed Nylon motor mount, a 1/4" steel shoulder bolt dead axel, and nearly indestructible TPU hubs and Urethane tires. |thumb|Division V3 Drivetrain - Custom pinion gear on a Xing 2306 1700kV motor, driving a 3D printed Nylon spur gear coupled to a 3D printed TPU hub with an overmolded Urethane tire]]<br />
The emphasis for Version 3.0 was reliability and reparability. The weapon motor, weapon ESC, drive ESCs, and weapons themselves are the only parts carried over into V3.0. The drive system was entirely overhauled and replaced with a system first prototyped on the control bot Shrapnel Mine (pictured). Shrapnel Mine proved the system could work, and it was able to survive hits far better than any foam wheels with metal hubs ever could. This design is intended to accomplish several things: <br />
<br />
# The TPU wheels should survive multiple huge impacts without losing functionality, and absorb shock well<br />
# The dead axel should never bend or break without other elements failing spectacularly first<br />
# The single stage reduction is far lighter than a planetary gearbox, way cheaper, and more robust<br />
# Custom molded 30A urethane tires have superior grip to foam wheels and most Banebots wheels<br />
# More than 4X the drive power of even Fingertech Mega Sparks on 4S<br />
# Every part can be easily serviced in minutes<br />
<br />
[[File:Division Billet Chassis.png|thumb|This chassis part weighs about 6.5 ounces and is milled from a single 4lb solid block of 6061 Aluminum]]<br />
[[File:Shrapnel Mine (3lb bot from Team Just 'Cuz Robotics).jpg|alt=Shrapnel Mine is a control bot with an articulating saw arm, but unlike other saw robots, the saw arm articulates along with a hinged par of front forks, with the intent to get under opponents, pin them against a wall, and saw into the undersides. |thumb|Shrapnel Mine (3lb) from Team Just 'Cuz Robotics]]<br />
Another extremely huge experiment was with the chassis. In order to reduce the overall part count and fastener count while maintaining as much rigidity as possible for a given weight, a solid single part aluminum chassis was designed to be milled from a single block of metal. This chassis has numerous advantages compared to the prior structure. <br />
<br />
# 1 Piece Construction, saving about 30 screws<br />
# Much more rigid and less likely to permanently bend than prior baseplate<br />
# Cost is only ~$22 of metal, outsourcing for about $62 each with sponsorship<br />
# Upright mounting is vastly improved, and much better constrained square to the baseplate<br />
# Uprights no longer need to be drilled and end tapped, and are now purely 2D lasercut parts<br />
# Far greater design freedom with 3D vs 2D construction<br />
# Far greater overall stiffness<br />
# Solid single part metal connections, way stronger than Nylon printed parts and screws which frequently failed<br />
# Integrated top panel screw holes, avoiding headaches with threaded standoffs in prior versions<br />
# Rear threaded holes allow for modularity with future rear attachments<br />
<br />
And many more!<br />
<br />
Division V3.0 first entered the March 2022 tournament which exposed a few design flaws and sub optimal material choices. However, it worked as a proof of concept to show there was potential if the billet chassis were better protected. The weapon reliability was very good. <br />
<br />
Division V3.1 fought in April with an added TPU rear protector, larger battery, and more durable drive mounts, and this proved extremely competitive with a 6-2 showing, beating several tough opponents (Sombra, Clyde, Spartan X, and Fully Defined). Still, the final fight with Lynx showed there were obvious areas for improvement with the drive system. <br />
<br />
Division V3.2 was upgraded with even more durable Polypropylene drive mounts and rear armor, as well as a design change to the drive mount design to make it more easily serviced and more consistent to handle. This was also a test for a new tire molding compound that would adhere to the hubs much better, which while true, also wore down substantially after a few fights. Once again, Division lost to extremely competitive beater bar bots, but in four grudge matches it showed its true potential with dominant showings across the board. The reliability of the bot as a whole is very good, but there is still room for improvement. <br />
<br />
Division V3.2 went on to compete at an event called Labor Day Disarray on September 3rd, 2022. Division had a great run at this event with 4 wins. Division beat May NHRL champion bot Crashfest twice, ultimately losing out to Caldera to earn a 2nd place podium spot, and winning the Most Destructive Bot award. Caldera was responsible for both of Division's losses at this event. <br />
<br />
== Notable Facts ==<br />
Division stores about 700 joules of kinetic energy in its various weapons with tip speeds approaching 235mph max. However, due to the gyroscopic forces created at top speed and the loss of bite at high RPM, Seth constantly modulates the speed of the weapon while driving to ensure turning is manageable and the hits delivered are biggest when the opportunity arises. <br />
<br />
As of 2022, Division has five interchangeable AR500 weapons, but the asymmetric Cutter Blade is the current favorite, having the ability to survive horizontal spinner hits and cut through soft plastic and aluminum armor with ease. Each weapon is roughly 200-255 grams. Fights with Division very rarely make it the full three minutes - it is designed to end fights fast and decisively. <br />
<br />
Division V2.12 in 2021 had been rebuilt many times since Version 2.0, but only gotten a ground up redesign between 1.0 and 2.0. Since V2.0, the drivetrain and weapon system have both changed drastically, the armor package has moved from entirely aluminum to mostly titanium, and the entire system voltage was raised. Only the exterior resembled what it was back in 2019. It was sold off at the end of 2021 to fund a brand new build for Division V3.0 in 2022 <br />
<br />
== Combat History ==<br />
'''V2.7-V2.12 (2021)''' <br />
<br />
Division lived on to fight through many tournaments both in and out of Norwalk. General reliability improvements to the weapon system were made using a DYS Aria 70A BlHelo32 weapon ESC with conservative programming, a Cobra 2814 1850kV weapon motor with a beefy 5mm shaft, and clamping pullies that slipped on the motor shaft to prevent shock loads from ruining the motors. This last change p[roved to be extremely problematic, however. Toward the end of its combat career, Division V2.X had at least four instances where the pulley axially slid down the motor shaft until it came in contact with Division's own weapon, tearing the motor loose from its mounting. The first time the motor came loose was against Eruption in Division's first fight ever using the Cobra motors. At Division V2.12's final tournament, it was given a brutal sendoff by fighting against more than [https://youtu.be/lDVwuW8MP8k 9 opponents at once in a rumble], knocking five out, losing its weapon motor entirely in the fray, before falling on its back, unable to self right, just 20 seconds from the end of the match. <br />
<br />
'''V1.0, V2+ (2020)''' <br />
<br />
Division V1.0 first competed at Norwalk Havoc in August 2019 with a blue color scheme. After that, with wins over multibot Sisyphus and The Rock, and Foiled Again, but losses to Trident and Scrambler, the design was completely overhauled for a V2. Division has continually been iterated after every competition. V2.0 competed at Norwalk Havoc in September 2019, and then upgraded versions competed at the Franklin Institute, SWORD Fall 2019, Norwalk in January 2020, and Motorama in February 2020 with version 2.7. In every competition besides Franklin Institute where Division went 0-2, it has had a record of at least 2-2 or better. <br />
<br />
Since Motorama (February 2020), the drive was upgraded to a fully custom brushless solution, the rear armor was upgraded, and Carbon-Fiber Nylon or TPU 3D prints were added in place of some plain Nylon parts from past versions. The weapon ESC was upped from 50A to 70A-80A, and the battery was larger as well. <br />
<br />
In the November 2020 NHRL Tournament, Division did not perform exactly as expected, although still achieving a 2-2 record against incredibly tough opponents. Many changes which were tested over and over again before the tournament and seemed perfectly reliable, failed unexpectedly and early in fights. Weapon reliability was the main issue as it broke in several ways in different fights. In the end the most repeated issue came down to the weapon motor vibrating itself loose, allowing it to slip in belt tensioning slots from its ideal position. The slack in the belt meant that the weapon spun up fine with little resistance, but lacked the torque to self right like it had proven to do in testing. While the robot suffered little to no real damage in the fights it lost, it was unable to get back onto its wheels and keep driving. The custom brushless drive and 3D printed wheel hubs, however, performed amazingly well, and the drive never failed, even with the wheels taking direct hits in three separate fights. <br />
== Select Fights ==<br />
{{#ev:youtube|https://www.youtube.com/watch?v=Sww-vsWSQBw}}<br />
{{#ev:youtube|https://www.youtube.com/watch?v=_ErE7kddM80|||||start=3405}}<br />
<br />
[[Category:3lb Bots]][[Category:NHRL 2018-19]][[Category:NHRL 2020]][[Category:NHRL 2021]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Shameless_Self_Promotion&diff=8249Shameless Self Promotion2023-04-02T15:51:54Z<p>JustCuzRobotics: Added event recap descriptions</p>
<hr />
<div>[[File:SSP Black BG.jpg|thumb|Shameless Self Promotion Logo on full display]]<br />
<br />
== Shameless Self Promotion ==<br />
Shameless Self Promotion (a.k.a. SSP) is a Beetleweight control bot designed by Seth Schaffer of Team 'Just 'Cuz Robotics, and the test platform for the [https://justcuzrobotics.com/shop/p/ssp-robot-kit SSP Combat Robot Kit]. SSP competed in January and March 20223 NHRL events with a V0.9 and V0.95 design of the SSP kit. The only differences between SSP and the kits are that Shameless Self Promotion uses older beta Motherboard revisions and a slightly different chassis that's a bit worse than what the kits use, and SSP uses undyed wheels while the kits ship with black wheels and no lid decal. Functionally they are almost identical.<br />
<br />
=== January 2023 NHRL - New Bot Event ===<br />
In January NHRL, SSP had a few teething issues but still performed very well with wins over lifter bot Slamson 2Chicken 2Huffin, Peter Bar vertical spinner kit Basado, and in a grudge match Fingertech Beater Sadiq, and losing only a JD split decision against the undercutter Off Beat, despite having disabled Off Beat's spinner and a drive side. The main issue SSP faced was lifter durability in January, but nothing on the whole robot broke except a few bent or damaged screws and the aluminum servo horn.<br />
<br />
=== March 2023 NHRL ===<br />
With the official announcement of the kit in January and preorders flooding in, SSP needed to get a few upgrades to make the kit even more reliable by March. So a steel replacement servo horn was fitted and a few other minor improvements were implemented. Although 25 kit chassis were already on hand SSP ran with the same exact battle damaged billet UHMW chassis as in January to test the longevity of that component. To help counter beater bars, we turned to [https://www.recr.us/ RECR.us] who waterjet a set of AR600 claw forks to use against beater bars for about $30. A third V0.9 chassis and collection of kit parts with orange TPU was sent to Matthew Lantry to compete at this event as SSP (Shameless Self Advertising). SSA was running the V1.0 motherboard instead of the beta versions but was otherwise the same as SSP. Unfortunately Seth forgot to bring any spare DartBox Dragon drive motors so we had to pray we didn't break any (spoiler - we didn't). <br />
[[File:SSP White BG.jpg|thumb|Shameless Self Promotion in a photo box with a white background and arm raised]]The March event was a ton of fun and SSP went super deep, winning fights against many brutal spinners. SSP continued its breaking undercutter streak, disabling the weapons of Plot Twist and CatTastrophe 2. It managed to outlast Saber for a KO victory and despite a malfunctioning lifter, bullied Blackbird all around the arena for a split JD win. It even got to prove its lifter was overengineered by lifting and shoving 5.4 pound Pawsitively Hissterical around the arena, and accidentally ripping out its battery just before the 3 minute mark. However some gremlins and electrical issues ultimately led to its demise against Apex in the top 16, for an overall 9th place finish among the massive 164 bot field.</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:SSP_Black_BG.jpg&diff=8248File:SSP Black BG.jpg2023-04-02T15:33:05Z<p>JustCuzRobotics: </p>
<hr />
<div>Shameless Self Promotion in a photo box with a black background and arm raised showing the logo</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Shameless_Self_Promotion&diff=8247Shameless Self Promotion2023-04-02T15:32:31Z<p>JustCuzRobotics: Created page with "Shameless Self Promotion (a.k.a. SSP) is a Beetleweight control bot designed by Seth Schaffer of Team 'Just 'Cuz Robotics, and the test platform for the SSP Combat Robot Kit...."</p>
<hr />
<div>Shameless Self Promotion (a.k.a. SSP) is a Beetleweight control bot designed by Seth Schaffer of Team 'Just 'Cuz Robotics, and the test platform for the SSP Combat Robot Kit. SSP competed in January and March 20223 NHRL events with a V0.9 and V0.95 design of the SSP kit.<br />
[[File:SSP White BG.jpg|thumb|Shameless Self Promotion in a photo box with a white background and arm raised]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:SSP_White_BG.jpg&diff=8246File:SSP White BG.jpg2023-04-02T15:32:09Z<p>JustCuzRobotics: </p>
<hr />
<div>Shameless Self Promotion in a photo box with a white background and arm raised</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division&diff=6998Division2022-09-28T02:04:28Z<p>JustCuzRobotics: /* Robot Facts */</p>
<hr />
<div>Division is a Vertical Disk Spinner 3lb Robot. <br />
===Robot Facts===<br />
[[File:Division V3.0.jpg|thumb|Division V3.0 (March 2022)]]<br />
Version 3.2 (Fought in July 2022 NHRL)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Driver || Seth Schaffer from [https://www.youtube.com/channel/UCsoZN2VwWJbJ30y2e2sfmnw/ Team Just 'Cuz Robotics]<br />
|-<br />
| Weight Class || [[3lb Weight Class|3lb]]<br />
|-<br />
| Body Material || Solid Aluminum Billet<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
| Drive || [https://youtu.be/xnb8YqanMzQ Custom Single Stage 2306 Geared Drive] <br />
|-<br />
| Power || 4S Lipo & Custom Power Distribution PCB<br />
|}<br />
<br />
<br />
Version 2.12 (July-November 2021)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Body Material || Titanium & Aluminum with 3D Printed Mounts<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
| Drive ||[https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox]<br />
|-<br />
| Power || 4S Lipo<br />
|}{{Bot Stats|bot=Division|class=3lb}}<br />
<br />
== Version 3 (2022 Redesign) ==<br />
Division was always a mean robot to fight, but its explosive power proved to be its own downfall only a little less than half the time. With the V2.X archetype, repairs and maintenance were cumbersome, and with many retrofitted components taking the place of prior ones, the whole structure was really problematic in the end. At the end of 2021 it was retired officially, and a brand new from scratch redesign effort began,<br />
[[File:Division V3 Drivetrain.jpg|alt=Division V3 Drivetrain - This consists of a 3D printed Nylon motor mount, a 1/4" steel shoulder bolt dead axel, and nearly indestructible TPU hubs and Urethane tires. |thumb|Division V3 Drivetrain - Custom pinion gear on a Xing 2306 1700kV motor, driving a 3D printed Nylon spur gear coupled to a 3D printed TPU hub with an overmolded Urethane tire]]<br />
The emphasis for Version 3.0 was reliability and reparability. The weapon motor, weapon ESC, drive ESCs, and weapons themselves are the only parts carried over into V3.0. The drive system was entirely overhauled and replaced with a system first prototyped on the control bot Shrapnel Mine (pictured). Shrapnel Mine proved the system could work, and it was able to survive hits far better than any foam wheels with metal hubs ever could. This design is intended to accomplish several things: <br />
<br />
# The TPU wheels should survive multiple huge impacts without losing functionality, and absorb shock well<br />
# The dead axel should never bend or break without other elements failing spectacularly first<br />
# The single stage reduction is far lighter than a planetary gearbox, way cheaper, and more robust<br />
# Custom molded 30A urethane tires have superior grip to foam wheels and most Banebots wheels<br />
# More than 4X the drive power of even Fingertech Mega Sparks on 4S<br />
# Every part can be easily serviced in minutes<br />
<br />
[[File:Division Billet Chassis.png|thumb|This chassis part weighs about 6.5 ounces and is milled from a single 4lb solid block of 6061 Aluminum]]<br />
[[File:Shrapnel Mine (3lb bot from Team Just 'Cuz Robotics).jpg|alt=Shrapnel Mine is a control bot with an articulating saw arm, but unlike other saw robots, the saw arm articulates along with a hinged par of front forks, with the intent to get under opponents, pin them against a wall, and saw into the undersides. |thumb|Shrapnel Mine (3lb) from Team Just 'Cuz Robotics]]<br />
Another extremely huge experiment was with the chassis. In order to reduce the overall part count and fastener count while maintaining as much rigidity as possible for a given weight, a solid single part aluminum chassis was designed to be milled from a single block of metal. This chassis has numerous advantages compared to the prior structure. <br />
<br />
# 1 Piece Construction, saving about 30 screws<br />
# Much more rigid and less likely to permanently bend than prior baseplate<br />
# Cost is only ~$22 of metal, outsourcing for about $62 each with sponsorship<br />
# Upright mounting is vastly improved, and much better constrained square to the baseplate<br />
# Uprights no longer need to be drilled and end tapped, and are now purely 2D lasercut parts<br />
# Far greater design freedom with 3D vs 2D construction<br />
# Far greater overall stiffness<br />
# Solid single part metal connections, way stronger than Nylon printed parts and screws which frequently failed<br />
# Integrated top panel screw holes, avoiding headaches with threaded standoffs in prior versions<br />
# Rear threaded holes allow for modularity with future rear attachments<br />
<br />
And many more!<br />
<br />
Division V3.0 first entered the March 2022 tournament which exposed a few design flaws and sub optimal material choices. However, it worked as a proof of concept to show there was potential if the billet chassis were better protected. The weapon reliability was very good. <br />
<br />
Division V3.1 fought in April with an added TPU rear protector, larger battery, and more durable drive mounts, and this proved extremely competitive with a 6-2 showing, beating several tough opponents (Sombra, Clyde, Spartan X, and Fully Defined). Still, the final fight with Lynx showed there were obvious areas for improvement with the drive system. <br />
<br />
Division V3.2 was upgraded with even more durable Polypropylene drive mounts and rear armor, as well as a design change to the drive mount design to make it more easily serviced and more consistent to handle. This was also a test for a new tire molding compound that would adhere to the hubs much better, which while true, also wore down substantially after a few fights. Once again, Division lost to extremely competitive beater bar bots, but in four grudge matches it showed its true potential with dominant showings across the board. The reliability of the bot as a whole is very good, but there is still room for improvement. <br />
<br />
Division V3.2 went on to compete at an event called Labor Day Disarray on September 3rd, 2022. Division had a great run at this event with 4 wins. Division beat May NHRL champion bot Crashfest twice, ultimately losing out to Caldera to earn a 2nd place podium spot, and winning the Most Destructive Bot award. Caldera was responsible for both of Division's losses at this event. <br />
<br />
== Notable Facts ==<br />
Division stores about 700 joules of kinetic energy in its various weapons with tip speeds approaching 235mph max. However, due to the gyroscopic forces created at top speed and the loss of bite at high RPM, Seth constantly modulates the speed of the weapon while driving to ensure turning is manageable and the hits delivered are biggest when the opportunity arises. <br />
<br />
As of 2022, Division has five interchangeable AR500 weapons, but the asymmetric Cutter Blade is the current favorite, having the ability to survive horizontal spinner hits and cut through soft plastic and aluminum armor with ease. Each weapon is roughly 200-255 grams. Fights with Division very rarely make it the full three minutes - it is designed to end fights fast and decisively. <br />
<br />
Division V2.12 in 2021 had been rebuilt many times since Version 2.0, but only gotten a ground up redesign between 1.0 and 2.0. Since V2.0, the drivetrain and weapon system have both changed drastically, the armor package has moved from entirely aluminum to mostly titanium, and the entire system voltage was raised. Only the exterior resembled what it was back in 2019. It was sold off at the end of 2021 to fund a brand new build for Division V3.0 in 2022 <br />
<br />
== Combat History ==<br />
'''V2.7-V2.12 (2021)''' <br />
<br />
Division lived on to fight through many tournaments both in and out of Norwalk. General reliability improvements to the weapon system were made using a DYS Aria 70A BlHelo32 weapon ESC with conservative programming, a Cobra 2814 1850kV weapon motor with a beefy 5mm shaft, and clamping pullies that slipped on the motor shaft to prevent shock loads from ruining the motors. This last change p[roved to be extremely problematic, however. Toward the end of its combat career, Division V2.X had at least four instances where the pulley axially slid down the motor shaft until it came in contact with Division's own weapon, tearing the motor loose from its mounting. The first time the motor came loose was against Eruption in Division's first fight ever using the Cobra motors. At Division V2.12's final tournament, it was given a brutal sendoff by fighting against more than [https://youtu.be/lDVwuW8MP8k 9 opponents at once in a rumble], knocking five out, losing its weapon motor entirely in the fray, before falling on its back, unable to self right, just 20 seconds from the end of the match. <br />
<br />
'''V1.0, V2+ (2020)''' <br />
<br />
Division V1.0 first competed at Norwalk Havoc in August 2019 with a blue color scheme. After that, with wins over multibot Sisyphus and The Rock, and Foiled Again, but losses to Trident and Scrambler, the design was completely overhauled for a V2. Division has continually been iterated after every competition. V2.0 competed at Norwalk Havoc in September 2019, and then upgraded versions competed at the Franklin Institute, SWORD Fall 2019, Norwalk in January 2020, and Motorama in February 2020 with version 2.7. In every competition besides Franklin Institute where Division went 0-2, it has had a record of at least 2-2 or better. <br />
<br />
Since Motorama (February 2020), the drive was upgraded to a fully custom brushless solution, the rear armor was upgraded, and Carbon-Fiber Nylon or TPU 3D prints were added in place of some plain Nylon parts from past versions. The weapon ESC was upped from 50A to 70A-80A, and the battery was larger as well. <br />
<br />
In the November 2020 NHRL Tournament, Division did not perform exactly as expected, although still achieving a 2-2 record against incredibly tough opponents. Many changes which were tested over and over again before the tournament and seemed perfectly reliable, failed unexpectedly and early in fights. Weapon reliability was the main issue as it broke in several ways in different fights. In the end the most repeated issue came down to the weapon motor vibrating itself loose, allowing it to slip in belt tensioning slots from its ideal position. The slack in the belt meant that the weapon spun up fine with little resistance, but lacked the torque to self right like it had proven to do in testing. While the robot suffered little to no real damage in the fights it lost, it was unable to get back onto its wheels and keep driving. The custom brushless drive and 3D printed wheel hubs, however, performed amazingly well, and the drive never failed, even with the wheels taking direct hits in three separate fights. <br />
== Select Fights ==<br />
{{#ev:youtube|https://www.youtube.com/watch?v=Sww-vsWSQBw}}<br />
{{#ev:youtube|https://www.youtube.com/watch?v=_ErE7kddM80|||||start=3405}}<br />
<br />
[[Category:3lb Bots]][[Category:NHRL 2018-19]][[Category:NHRL 2020]][[Category:NHRL 2021]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division&diff=6207Division2022-07-18T13:41:51Z<p>JustCuzRobotics: /* Version 3 (2022 Redesign) */ Added notes from april and july 2022</p>
<hr />
<div>Division is a Vertical Disk Spinner 3lb Robot. <br />
===Robot Facts===<br />
[[File:Division V3.0.jpg|thumb|Division V3.0 (March 2022)]]<br />
Version 3.0 (Fought in March 2022 NHRL)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Driver || Seth Schaffer from [https://www.youtube.com/channel/UCsoZN2VwWJbJ30y2e2sfmnw/ Team Just 'Cuz Robotics]<br />
|-<br />
| Weight Class || [[3lb Weight Class|3lb]]<br />
|-<br />
| Body Material || Solid Aluminum Billet<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
| Drive || [https://youtu.be/xnb8YqanMzQ Custom Single Stage 2306 Geared Drive] <br />
|-<br />
| Power || 4S Lipo & Custom Power Distribution PCB<br />
|}<br />
<br />
<br />
Version 2.12 (July-November 2021)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Body Material || Titanium & Aluminum with 3D Printed Mounts<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
| Drive ||[https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox]<br />
|-<br />
| Power || 4S Lipo<br />
|}{{Bot Stats|bot=Division|class=3lb}}<br />
<br />
== Version 3 (2022 Redesign) ==<br />
Division was always a mean robot to fight, but its explosive power proved to be its own downfall only a little less than half the time. With the V2.X archetype, repairs and maintenance were cumbersome, and with many retrofitted components taking the place of prior ones, the whole structure was really problematic in the end. At the end of 2021 it was retired officially, and a brand new from scratch redesign effort began,<br />
[[File:Division V3 Drivetrain.jpg|alt=Division V3 Drivetrain - This consists of a 3D printed Nylon motor mount, a 1/4" steel shoulder bolt dead axel, and nearly indestructible TPU hubs and Urethane tires. |thumb|Division V3 Drivetrain - Custom pinion gear on a Xing 2306 1700kV motor, driving a 3D printed Nylon spur gear coupled to a 3D printed TPU hub with an overmolded Urethane tire]]<br />
The emphasis for Version 3.0 was reliability and reparability. The weapon motor, weapon ESC, drive ESCs, and weapons themselves are the only parts carried over into V3.0. The drive system was entirely overhauled and replaced with a system first prototyped on the control bot Shrapnel Mine (pictured). Shrapnel Mine proved the system could work, and it was able to survive hits far better than any foam wheels with metal hubs ever could. This design is intended to accomplish several things: <br />
<br />
# The TPU wheels should survive multiple huge impacts without losing functionality, and absorb shock well<br />
# The dead axel should never bend or break without other elements failing spectacularly first<br />
# The single stage reduction is far lighter than a planetary gearbox, way cheaper, and more robust<br />
# Custom molded 30A urethane tires have superior grip to foam wheels and most Banebots wheels<br />
# More than 4X the drive power of even Fingertech Mega Sparks on 4S<br />
# Every part can be easily serviced in minutes<br />
<br />
[[File:Division Billet Chassis.png|thumb|This chassis part weighs about 6.5 ounces and is milled from a single 4lb solid block of 6061 Aluminum]]<br />
[[File:Shrapnel Mine (3lb bot from Team Just 'Cuz Robotics).jpg|alt=Shrapnel Mine is a control bot with an articulating saw arm, but unlike other saw robots, the saw arm articulates along with a hinged par of front forks, with the intent to get under opponents, pin them against a wall, and saw into the undersides. |thumb|Shrapnel Mine (3lb) from Team Just 'Cuz Robotics]]<br />
Another extremely huge experiment was with the chassis. In order to reduce the overall part count and fastener count while maintaining as much rigidity as possible for a given weight, a solid single part aluminum chassis was designed to be milled from a single block of metal. This chassis has numerous advantages compared to the prior structure. <br />
<br />
# 1 Piece Construction, saving about 30 screws<br />
# Much more rigid and less likely to permanently bend than prior baseplate<br />
# Cost is only ~$22 of metal, outsourcing for about $62 each with sponsorship<br />
# Upright mounting is vastly improved, and much better constrained square to the baseplate<br />
# Uprights no longer need to be drilled and end tapped, and are now purely 2D lasercut parts<br />
# Far greater design freedom with 3D vs 2D construction<br />
# Far greater overall stiffness<br />
# Solid single part metal connections, way stronger than Nylon printed parts and screws which frequently failed<br />
# Integrated top panel screw holes, avoiding headaches with threaded standoffs in prior versions<br />
# Rear threaded holes allow for modularity with future rear attachments<br />
<br />
And many more!<br />
<br />
Division V3.0 first entered the March 2022 tournament which exposed a few design flaws and sub optimal material choices. However, it worked as a proof of concept to show there was potential if the billet chassis were better protected. The weapon reliability was very good. <br />
<br />
Division V3.1 fought in April with an added TPU rear protector, larger battery, and more durable drive mounts, and this proved extremely competitive with a 6-2 showing, beating several tough opponents (Sombra, Clyde, Spartan X, and Fully Defined). Still, the final fight with Lynx showed there were obvious areas for improvement with the drive system. <br />
<br />
Division V3.2 was upgraded with even more durable Polypropylene drive mounts and rear armor, as well as a design change to the drive mount design to make it more easily serviced and more consistent to handle. This was also a test for a new tire molding compound that would adhere to the hubs much better, which while true, also wore down substantially after a few fights. Once again, Division lost to extremely competitive beater bar bots, but in four grudge matches it showed its true potential with dominant showings across the board. The reliability of the bot as a whole is very good, but there is still room for improvement. <br />
<br />
== Notable Facts ==<br />
Division stores about 700 joules of kinetic energy in its various weapons with tip speeds approaching 235mph max. However, due to the gyroscopic forces created at top speed and the loss of bite at high RPM, Seth constantly modulates the speed of the weapon while driving to ensure turning is manageable and the hits delivered are biggest when the opportunity arises. <br />
<br />
As of 2022, Division has five interchangeable AR500 weapons, but the asymmetric Cutter Blade is the current favorite, having the ability to survive horizontal spinner hits and cut through soft plastic and aluminum armor with ease. Each weapon is roughly 200-255 grams. Fights with Division very rarely make it the full three minutes - it is designed to end fights fast and decisively. <br />
<br />
Division V2.12 in 2021 had been rebuilt many times since Version 2.0, but only gotten a ground up redesign between 1.0 and 2.0. Since V2.0, the drivetrain and weapon system have both changed drastically, the armor package has moved from entirely aluminum to mostly titanium, and the entire system voltage was raised. Only the exterior resembled what it was back in 2019. It was sold off at the end of 2021 to fund a brand new build for Division V3.0 in 2022 <br />
<br />
== Combat History ==<br />
'''V2.7-V2.12 (2021)''' <br />
<br />
Division lived on to fight through many tournaments both in and out of Norwalk. General reliability improvements to the weapon system were made using a DYS Aria 70A BlHelo32 weapon ESC with conservative programming, a Cobra 2814 1850kV weapon motor with a beefy 5mm shaft, and clamping pullies that slipped on the motor shaft to prevent shock loads from ruining the motors. This last change p[roved to be extremely problematic, however. Toward the end of its combat career, Division V2.X had at least four instances where the pulley axially slid down the motor shaft until it came in contact with Division's own weapon, tearing the motor loose from its mounting. The first time the motor came loose was against Eruption in Division's first fight ever using the Cobra motors. At Division V2.12's final tournament, it was given a brutal sendoff by fighting against more than [https://youtu.be/lDVwuW8MP8k 9 opponents at once in a rumble], knocking five out, losing its weapon motor entirely in the fray, before falling on its back, unable to self right, just 20 seconds from the end of the match. <br />
<br />
'''V1.0, V2+ (2020)''' <br />
<br />
Division V1.0 first competed at Norwalk Havoc in August 2019 with a blue color scheme. After that, with wins over multibot Sisyphus and The Rock, and Foiled Again, but losses to Trident and Scrambler, the design was completely overhauled for a V2. Division has continually been iterated after every competition. V2.0 competed at Norwalk Havoc in September 2019, and then upgraded versions competed at the Franklin Institute, SWORD Fall 2019, Norwalk in January 2020, and Motorama in February 2020 with version 2.7. In every competition besides Franklin Institute where Division went 0-2, it has had a record of at least 2-2 or better. <br />
<br />
Since Motorama (February 2020), the drive was upgraded to a fully custom brushless solution, the rear armor was upgraded, and Carbon-Fiber Nylon or TPU 3D prints were added in place of some plain Nylon parts from past versions. The weapon ESC was upped from 50A to 70A-80A, and the battery was larger as well. <br />
<br />
In the November 2020 NHRL Tournament, Division did not perform exactly as expected, although still achieving a 2-2 record against incredibly tough opponents. Many changes which were tested over and over again before the tournament and seemed perfectly reliable, failed unexpectedly and early in fights. Weapon reliability was the main issue as it broke in several ways in different fights. In the end the most repeated issue came down to the weapon motor vibrating itself loose, allowing it to slip in belt tensioning slots from its ideal position. The slack in the belt meant that the weapon spun up fine with little resistance, but lacked the torque to self right like it had proven to do in testing. While the robot suffered little to no real damage in the fights it lost, it was unable to get back onto its wheels and keep driving. The custom brushless drive and 3D printed wheel hubs, however, performed amazingly well, and the drive never failed, even with the wheels taking direct hits in three separate fights. <br />
== Select Fights ==<br />
{{#ev:youtube|https://www.youtube.com/watch?v=Sww-vsWSQBw}}<br />
{{#ev:youtube|https://www.youtube.com/watch?v=_ErE7kddM80|||||start=3405}}<br />
<br />
[[Category:3lb Bots]][[Category:NHRL 2018-19]][[Category:NHRL 2020]][[Category:NHRL 2021]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division&diff=4426Division2022-03-30T23:58:29Z<p>JustCuzRobotics: /* Notable Facts */ Tons about V3</p>
<hr />
<div>Division is a Vertical Disk Spinner 3lb Robot. <br />
===Robot Facts===<br />
[[File:Division V3.0.jpg|thumb|Division V3.0 (March 2022)]]<br />
Version 3.0 (Fought in March 2022 NHRL)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Driver || Seth Schaffer from [https://www.youtube.com/channel/UCsoZN2VwWJbJ30y2e2sfmnw/ Team Just 'Cuz Robotics]<br />
|-<br />
| Weight Class || [[3lb Weight Class|3lb]]<br />
|-<br />
| Body Material || Solid Aluminum Billet<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
| Drive || [https://youtu.be/xnb8YqanMzQ Custom Single Stage 2306 Geared Drive] <br />
|-<br />
| Power || 4S Lipo & Custom Power Distribution PCB<br />
|}<br />
<br />
<br />
Version 2.12 (July-November 2021)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Body Material || Titanium & Aluminum with 3D Printed Mounts<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
| Drive ||[https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox]<br />
|-<br />
| Power || 4S Lipo<br />
|}{{Bot Stats|bot=Division|class=3lb}}<br />
<br />
== Version 3 (2022 Redesign) ==<br />
Division was always a mean robot to fight, but its explosive power proved to be its own downfall only a little less than half the time. With the V2.X archetype, repairs and maintenance were cumbersome, and with many retrofitted components taking the place of prior ones, the whole structure was really problematic in the end. At the end of 2021 it was retired officially, and a brand new from scratch redesign effort began,<br />
[[File:Division V3 Drivetrain.jpg|alt=Division V3 Drivetrain - This consists of a 3D printed Nylon motor mount, a 1/4" steel shoulder bolt dead axel, and nearly indestructible TPU hubs and Urethane tires. |thumb|Division V3 Drivetrain - Custom pinion gear on a Xing 2306 1700kV motor, driving a 3D printed Nylon spur gear coupled to a 3D printed TPU hub with an overmolded Urethane tire]]<br />
The emphasis for Version 3.0 was reliability and reparability. The weapon motor, weapon ESC, drive ESCs, and weapons themselves are the only parts carried over into V3.0. The drive system was entirely overhauled and replaced with a system first prototyped on the control bot Shrapnel Mine (pictured). Shrapnel Mine proved the system could work, and it was able to survive hits far better than any foam wheels with metal hubs ever could. This design is intended to accomplish several things: <br />
<br />
# The TPU wheels should survive multiple huge impacts without losing functionality, and absorb shock well<br />
# The dead axel should never bend or break without other elements failing spectacularly first<br />
# The single stage reduction is far lighter than a planetary gearbox, way cheaper, and more robust<br />
# Custom molded 30A urethane tires have superior grip to foam wheels and most Banebots wheels<br />
# More than 4X the drive power of even Fingertech Mega Sparks on 4S<br />
# Every part can be easily serviced in minutes<br />
<br />
[[File:Division Billet Chassis.png|thumb|This chassis part weighs about 6.5 ounces and is milled from a single 4lb solid block of 6061 Aluminum]]<br />
[[File:Shrapnel Mine (3lb bot from Team Just 'Cuz Robotics).jpg|alt=Shrapnel Mine is a control bot with an articulating saw arm, but unlike other saw robots, the saw arm articulates along with a hinged par of front forks, with the intent to get under opponents, pin them against a wall, and saw into the undersides. |thumb|Shrapnel Mine (3lb) from Team Just 'Cuz Robotics]]<br />
Another extremely huge experiment was with the chassis. In order to reduce the overall part count and fastener count while maintaining as much rigidity as possible for a given weight, a solid single part aluminum chassis was designed to be milled from a single block of metal. This chassis has numerous advantages compared to the prior structure. <br />
<br />
# 1 Piece Construction, saving about 30 screws<br />
# Much more rigid and less likely to permanently bend than prior baseplate<br />
# Cost is only ~$22 of metal, outsourcing for about $62 each with sponsorship<br />
# Upright mounting is vastly improved, and much better constrained square to the baseplate<br />
# Uprights no longer need to be drilled and end tapped, and are now purely 2D lasercut parts<br />
# Far greater design freedom with 3D vs 2D construction<br />
# Far greater overall stiffness<br />
# Solid single part metal connections, way stronger than Nylon printed parts and screws which frequently failed<br />
# Integrated upright screw holes, avoiding headaches with threaded standoffs in prior versions<br />
# Rear threaded holes allow for modularity with future rear attachments<br />
<br />
And many more!<br />
<br />
Sadly V3.0 experienced a few gremlins as it was built in under 10 hours with almost 0 testing before the March tournament due to time constraints surrounding the billet chassis. A rookie mistake of not taping the battery connector led to an early out from the tournament. The billet, while it accomplished many of the goals it set out to, was too fragile due to its exposed rear panel. This will be addressed in future versions - look forward to V3.1 in April!<br />
<br />
== Notable Facts ==<br />
Division stores about 700 joules of kinetic energy in its various weapons with tip speeds approaching 235mph max. However, due to the gyroscopic forces created at top speed and the loss of bite at high RPM, Seth constantly modulates the speed of the weapon while driving to ensure turning is manageable and the hits delivered are biggest when the opportunity arises. <br />
<br />
As of 2022, Division has five interchangeable AR500 weapons, but the asymmetric Cutter Blade is the current favorite, having the ability to survive horizontal spinner hits and cut through soft plastic and aluminum armor with ease. Each weapon is roughly 200-255 grams. Fights with Division very rarely make it the full three minutes - it is designed to end fights fast and decisively. <br />
<br />
Division V2.12 in 2021 had been rebuilt many times since Version 2.0, but only gotten a ground up redesign between 1.0 and 2.0. Since V2.0, the drivetrain and weapon system have both changed drastically, the armor package has moved from entirely aluminum to mostly titanium, and the entire system voltage was raised. Only the exterior resembled what it was back in 2019. It was sold off at the end of 2021 to fund a brand new build for Division V3.0 in 2022 <br />
<br />
== Combat History ==<br />
'''V2.7-V2.12 (2021)''' <br />
<br />
Division lived on to fight through many tournaments both in and out of Norwalk. General reliability improvements to the weapon system were made using a DYS Aria 70A BlHelo32 weapon ESC with conservative programming, a Cobra 2814 1850kV weapon motor with a beefy 5mm shaft, and clamping pullies that slipped on the motor shaft to prevent shock loads from ruining the motors. This last change p[roved to be extremely problematic, however. Toward the end of its combat career, Division V2.X had at least four instances where the pulley axially slid down the motor shaft until it came in contact with Division's own weapon, tearing the motor loose from its mounting. The first time the motor came loose was against Eruption in Division's first fight ever using the Cobra motors. At Division V2.12's final tournament, it was given a brutal sendoff by fighting against more than [https://youtu.be/lDVwuW8MP8k 9 opponents at once in a rumble], knocking five out, losing its weapon motor entirely in the fray, before falling on its back, unable to self right, just 20 seconds from the end of the match. <br />
<br />
'''V1.0, V2+ (2020)''' <br />
<br />
Division V1.0 first competed at Norwalk Havoc in August 2019 with a blue color scheme. After that, with wins over multibot Sisyphus and The Rock, and Foiled Again, but losses to Trident and Scrambler, the design was completely overhauled for a V2. Division has continually been iterated after every competition. V2.0 competed at Norwalk Havoc in September 2019, and then upgraded versions competed at the Franklin Institute, SWORD Fall 2019, Norwalk in January 2020, and Motorama in February 2020 with version 2.7. In every competition besides Franklin Institute where Division went 0-2, it has had a record of at least 2-2 or better. <br />
<br />
Since Motorama (February 2020), the drive was upgraded to a fully custom brushless solution, the rear armor was upgraded, and Carbon-Fiber Nylon or TPU 3D prints were added in place of some plain Nylon parts from past versions. The weapon ESC was upped from 50A to 70A-80A, and the battery was larger as well. <br />
<br />
In the November 2020 NHRL Tournament, Division did not perform exactly as expected, although still achieving a 2-2 record against incredibly tough opponents. Many changes which were tested over and over again before the tournament and seemed perfectly reliable, failed unexpectedly and early in fights. Weapon reliability was the main issue as it broke in several ways in different fights. In the end the most repeated issue came down to the weapon motor vibrating itself loose, allowing it to slip in belt tensioning slots from its ideal position. The slack in the belt meant that the weapon spun up fine with little resistance, but lacked the torque to self right like it had proven to do in testing. While the robot suffered little to no real damage in the fights it lost, it was unable to get back onto its wheels and keep driving. The custom brushless drive and 3D printed wheel hubs, however, performed amazingly well, and the drive never failed, even with the wheels taking direct hits in three separate fights. <br />
== Select Fights ==<br />
{{#ev:youtube|https://www.youtube.com/watch?v=Sww-vsWSQBw}}<br />
{{#ev:youtube|https://www.youtube.com/watch?v=_ErE7kddM80|||||start=3405}}<br />
<br />
[[Category:3lb Bots]][[Category:NHRL 2018-19]][[Category:NHRL 2020]][[Category:NHRL 2021]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_V3_Drivetrain.jpg&diff=4425File:Division V3 Drivetrain.jpg2022-03-30T23:26:41Z<p>JustCuzRobotics: </p>
<hr />
<div>Division V3 Drivetrain - This consists of a 3D printed Nylon motor mount, a 1/4" steel shoulder bolt dead axel, and nearly indestructible TPU hubs and Urethane tires.</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_Billet_Chassis.png&diff=4424File:Division Billet Chassis.png2022-03-30T23:24:46Z<p>JustCuzRobotics: </p>
<hr />
<div>Division Billet Chassis - single block of aluminum</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Shrapnel_Mine_(3lb_bot_from_Team_Just_%27Cuz_Robotics).jpg&diff=4423File:Shrapnel Mine (3lb bot from Team Just 'Cuz Robotics).jpg2022-03-30T23:22:05Z<p>JustCuzRobotics: </p>
<hr />
<div>Shrapnel Mine is a control bot with an articulating saw arm, but unlike other saw robots, the saw arm articulates along with a hinged par of front forks, with the intent to get under opponents, pin them against a wall, and saw into the undersides.</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=Division&diff=4422Division2022-03-30T23:15:21Z<p>JustCuzRobotics: /* Robot Facts */</p>
<hr />
<div>Division is a Vertical Disk Spinner 3lb Robot. <br />
===Robot Facts===<br />
[[File:Division V3.0.jpg|thumb|Division V3.0 (March 2022)]]<br />
Version 3.0 (Fought in March 2022 NHRL)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Driver || Seth Schaffer from [https://www.youtube.com/channel/UCsoZN2VwWJbJ30y2e2sfmnw/ Team Just 'Cuz Robotics]<br />
|-<br />
| Weight Class || [[3lb Weight Class|3lb]]<br />
|-<br />
| Body Material || Solid Aluminum Billet<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
|Wheels<br />
|3D Printed TPU Hubs + Cast Urethane Tires<br />
|-<br />
| Drive || [https://youtu.be/xnb8YqanMzQ Custom Single Stage 2306 Geared Drive] <br />
|-<br />
| Power || 4S Lipo & Custom Power Distribution PCB<br />
|}<br />
<br />
<br />
Version 2.12 (July-November 2021)<br />
{| class="wikitable" style="width: 60%"<br />
|-<br />
| Body Material || Titanium & Aluminum with 3D Printed Mounts<br />
|-<br />
| Weapon || 7.5" Vertical Spinner<br />
|-<br />
| Weapon Motor || Cobra 2814<br />
|-<br />
| Drive ||[https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox]<br />
|-<br />
| Power || 4S Lipo<br />
|}{{Bot Stats|bot=Division|class=3lb}}<br />
<br />
== Notable Facts ==<br />
Division stores about 700 joules of kinetic energy in its various weapons with tip speeds approaching 235mph max. However, due to the gyroscopic forces created at top speed and the loss of bite at high RPM, Seth constantly modulates the speed of the weapon while driving to ensure turning is manageable and the hits delivered are biggest when the opportunity arises. <br />
<br />
As of 2022, Division has five interchangeable AR500 weapons, but the asymmetric Cutter Blade is the current favorite, having the ability to survive horizontal spinner hits and cut through soft plastic and aluminum armor with ease. Each weapon is roughly 200-255 grams. Fights with Division very rarely make it the full three minutes - it is designed to end fights fast and decisively. <br />
<br />
Division V2.12 in 2021 had been rebuilt many times since Version 2.0, but only gotten a ground up redesign between 1.0 and 2.0. Since V2.0, the drivetrain and weapon system have both changed drastically, the armor package has moved from entirely aluminum to mostly titanium, and the entire system voltage was raised. Only the exterior resembled what it was back in 2019. It was sold off at the end of 2021 to fund a brand new build for Division V3.0 in 2022 <br />
<br />
== Combat History ==<br />
'''V2.7-V2.12 (2021)''' <br />
<br />
Division lived on to fight through many tournaments both in and out of Norwalk. General reliability improvements to the weapon system were made using a DYS Aria 70A BlHelo32 weapon ESC with conservative programming, a Cobra 2814 1850kV weapon motor with a beefy 5mm shaft, and clamping pullies that slipped on the motor shaft to prevent shock loads from ruining the motors. This last change p[roved to be extremely problematic, however. Toward the end of its combat career, Division V2.X had at least four instances where the pulley axially slid down the motor shaft until it came in contact with Division's own weapon, tearing the motor loose from its mounting. The first time the motor came loose was against Eruption in Division's first fight ever using the Cobra motors. At Division V2.12's final tournament, it was given a brutal sendoff by fighting against more than [https://youtu.be/lDVwuW8MP8k 9 opponents at once in a rumble], knocking five out, losing its weapon motor entirely in the fray, before falling on its back, unable to self right, just 20 seconds from the end of the match. <br />
<br />
'''V1.0, V2+ (2020)''' <br />
<br />
Division V1.0 first competed at Norwalk Havoc in August 2019 with a blue color scheme. After that, with wins over multibot Sisyphus and The Rock, and Foiled Again, but losses to Trident and Scrambler, the design was completely overhauled for a V2. Division has continually been iterated after every competition. V2.0 competed at Norwalk Havoc in September 2019, and then upgraded versions competed at the Franklin Institute, SWORD Fall 2019, Norwalk in January 2020, and Motorama in February 2020 with version 2.7. In every competition besides Franklin Institute where Division went 0-2, it has had a record of at least 2-2 or better. <br />
<br />
Since Motorama (February 2020), the drive was upgraded to a fully custom brushless solution, the rear armor was upgraded, and Carbon-Fiber Nylon or TPU 3D prints were added in place of some plain Nylon parts from past versions. The weapon ESC was upped from 50A to 70A-80A, and the battery was larger as well. <br />
<br />
In the November 2020 NHRL Tournament, Division did not perform exactly as expected, although still achieving a 2-2 record against incredibly tough opponents. Many changes which were tested over and over again before the tournament and seemed perfectly reliable, failed unexpectedly and early in fights. Weapon reliability was the main issue as it broke in several ways in different fights. In the end the most repeated issue came down to the weapon motor vibrating itself loose, allowing it to slip in belt tensioning slots from its ideal position. The slack in the belt meant that the weapon spun up fine with little resistance, but lacked the torque to self right like it had proven to do in testing. While the robot suffered little to no real damage in the fights it lost, it was unable to get back onto its wheels and keep driving. The custom brushless drive and 3D printed wheel hubs, however, performed amazingly well, and the drive never failed, even with the wheels taking direct hits in three separate fights. <br />
== Select Fights ==<br />
{{#ev:youtube|https://www.youtube.com/watch?v=Sww-vsWSQBw}}<br />
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[[Category:3lb Bots]][[Category:NHRL 2018-19]][[Category:NHRL 2020]][[Category:NHRL 2021]]</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_V3.0.jpg&diff=4421File:Division V3.0.jpg2022-03-30T23:00:22Z<p>JustCuzRobotics: </p>
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<div>Division V3.0, before the March 2022 NHRL tournament<br />
Top panels were later replaced with carbon fiber.</div>JustCuzRoboticshttps://wiki.nhrl.io/wiki/index.php?title=File:Division_diag_view_1_1080p.jpg&diff=4420File:Division diag view 1 1080p.jpg2022-03-30T22:59:10Z<p>JustCuzRobotics: </p>
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<div>Division V3 before March 26th, 2022 NHRL</div>JustCuzRobotics