Division: Difference between revisions
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Division is a Vertical Disk Spinner 3lb Robot. |
Division is a Vertical Disk Spinner 3lb Robot. |
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===Robot Facts=== |
===Robot Facts=== |
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[[File:Division. |
[[File:Division-removebg1.png|alt=Division|thumb|Division - August 2023]] |
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Version 3.5 (July 2023-Present) |
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{| class="wikitable" style="width: 60%" |
{| class="wikitable" style="width: 60%" |
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!Team |
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![[Just 'Cuz Robotics]] |
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! Driver !! [[Seth Schaffer]] |
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| Driver || Seth Schaffer from [https://www.youtube.com/channel/UCsoZN2VwWJbJ30y2e2sfmnw/ Team Just 'Cuz Robotics] |
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| Weight Class || [[3lb Weight Class|3lb]] |
| Weight Class || [[3lb Weight Class|3lb]] |
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| Body Material || |
| Body Material || Solid Aluminum Billet |
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| Weapon || 7.5" Vertical |
| Weapon || 7.5" Vertical Spinner |
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| Weapon |
| Weapon Motor || Cobra 2814 |
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|Wheels |
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| Drive || [https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox] |
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|3D Printed TPU Hubs + Cast Urethane Tires |
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| Drive || [https://justcuzrobotics.com/products/dartbox-squared-drive?_pos=1&_sid=acd589f71&_ss=r DartBox Viper 6mm Motors] |
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| Power || 3S Lipo |
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|} |
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== Tournament Results == |
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==== 2019 ==== |
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{| class="wikitable" style="width: 60%" |
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| Power || 4S Lipo & Custom Power Distribution PCB |
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| NHRL August (V1) || 2 Wins - 2 Losses |
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| NHRL September || 2 Wins - 2 Losses |
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Version 2.12 (July-November 2021) |
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====2020==== |
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{| class="wikitable" style="width: 60%" |
{| class="wikitable" style="width: 60%" |
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| Body Material || Titanium & Aluminum with 3D Printed Mounts |
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| NHRL January || 3 Wins - 2 Losses |
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| Weapon || 7.5" Vertical Spinner |
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| Weapon Motor || Cobra 2814 |
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| Drive ||[https://www.youtube.com/watch?v=D1V4iaFsHO4 Custom Brushless 1806 15:1 Gearbox] |
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| NHRL September || Did Not Compete |
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| Power || 4S Lipo |
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|NHRL November |
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|}{{Bot Stats|bot=Division|class=3lb}} |
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|2 Wins - 2 Losses |
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|} |
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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. |
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==Version 3.5 (July 2023 Redesign)== |
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== Combat History == |
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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. |
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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. |
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== Version 3 (2022 Redesign) == |
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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. |
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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, |
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[[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]] |
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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: |
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# The TPU wheels should survive multiple huge impacts without losing functionality, and absorb shock well |
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# The dead axel should never bend or break without other elements failing spectacularly first |
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# The single stage reduction is far lighter than a planetary gearbox, way cheaper, and more robust |
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# Custom molded 30A urethane tires have superior grip to foam wheels and most Banebots wheels |
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# More than 4X the drive power of even Fingertech Mega Sparks on 4S |
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# Every part can be easily serviced in minutes |
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[[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]] |
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[[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]] |
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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. |
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# 1 Piece Construction, saving about 30 screws |
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# Much more rigid and less likely to permanently bend than prior baseplate |
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# Cost is only ~$22 of metal, outsourcing for about $62 each with sponsorship |
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# Upright mounting is vastly improved, and much better constrained square to the baseplate |
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# Uprights no longer need to be drilled and end tapped, and are now purely 2D lasercut parts |
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# Far greater design freedom with 3D vs 2D construction |
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# Far greater overall stiffness |
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# Solid single part metal connections, way stronger than Nylon printed parts and screws which frequently failed |
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# Integrated top panel screw holes, avoiding headaches with threaded standoffs in prior versions |
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# Rear threaded holes allow for modularity with future rear attachments |
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And many more! |
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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. |
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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. |
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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. |
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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. |
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==Notable Facts== |
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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. |
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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. |
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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 |
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==Combat History== |
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'''V2.7-V2.12 (2021)''' |
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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. |
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'''V1.0, V2+ (2020)''' |
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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. |
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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. |
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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. |
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==Select Fights== |
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Since Motorama (February 2020), the drive was upgraded to a fully custom brushless solution, the rear armor was upgraded, and Carbon-Fiber Nylon 3D prints were added in place of some plain Nylon parts from past versions. The weapon ESC was upped from 50A to 80A, and the battery was larger as well. |
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{{#ev:youtube|https://www.youtube.com/watch?v=Sww-vsWSQBw}} |
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==== Changes Made for February 6th ==== |
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{{#ev:youtube|https://www.youtube.com/watch?v=_ErE7kddM80|||||start=3405}} |
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[[Category:3lb Bots]] |
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* '''New redesigned uprights''' with no slots - just the perfect belt tension always |
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[[Category:US Robots]] |
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* '''Titanium front forks''', which shouldn't break off |
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[[Category:NHRL 2018-19]] |
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* '''New 'Cutter Blade'''' weapon design mixing the best features of the asymmetric disk and "S blade" |
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[[Category:NHRL 2020]] |
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* Bigger, torquier, '''even more powerful weapon motor''' (1850kv) with 5mm shaft |
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[[Category:NHRL 2021]] |
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* 4S Lipo instead of 3S |
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[[Category:NHRL 2022]] |
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* Switch to 16T motor pulley with Fairloc hub to act as a slip clutch |
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[[Category:NHRL 2023]] |
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* Improvements to brushless gearbox housing & side armor for better mounting |
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[[Category:Vertical Spinners]] |
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* Cast polyurethane tires can be used (against control bots) |
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[[Category:3lb Bots]][[Category:NHRL 2020]] |
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Latest revision as of 15:47, 1 October 2024
Division is a Vertical Disk Spinner 3lb Robot.
Robot Facts
Version 3.5 (July 2023-Present)
| Team | Just 'Cuz Robotics |
|---|---|
| Driver | Seth Schaffer |
| Weight Class | 3lb |
| Body Material | Solid Aluminum Billet |
| Weapon | 7.5" Vertical Spinner |
| Weapon Motor | Cobra 2814 |
| Wheels | 3D Printed TPU Hubs + Cast Urethane Tires |
| Drive | DartBox Viper 6mm Motors |
| Power | 4S Lipo & Custom Power Distribution PCB |
Version 2.12 (July-November 2021)
| Body Material | Titanium & Aluminum with 3D Printed Mounts |
| Weapon | 7.5" Vertical Spinner |
| Weapon Motor | Cobra 2814 |
| Drive | Custom Brushless 1806 15:1 Gearbox |
| Power | 4S Lipo |
Statistics
Info
- Rank: #208 in 3lb.
- Last 5 fights: LWWWL
- Current streak: L1 (0 KOs/KO'd)
- Longest winning streak: 4 (2 KOs)
- Longest losing streak: 4 (3 KO'd)
- Avg fight time (seconds): 87.9
Record
| Year | Events | Fights | W | L | % | KOs | KO'd |
|---|---|---|---|---|---|---|---|
| 2018-19 | 2 | 7 | 4 | 3 | 0.571 | 3 | 3 |
| 2020 | 2 | 9 | 5 | 4 | 0.556 | 4 | 4 |
| 2021 | 3 | 11 | 5 | 6 | 0.455 | 5 | 5 |
| 2022 | 3 | 13 | 7 | 6 | 0.538 | 5 | 6 |
| 2023 | 2 | 7 | 3 | 4 | 0.429 | 1 | 2 |
| 2024 | |||||||
| All-Time | 12 | 47 | 24 | 23 | 0.511 | 18 | 20 |
Events
| Date | Fought as | Reached | Place | Fights | W | L | KOs | KO'd |
|---|---|---|---|---|---|---|---|---|
| August 10, 2019 | Division | Losers 4 | 3 | 2 | 1 | 2 | 1 | |
| September 28, 2019 | Division | Losers 3 | 4 | 2 | 2 | 1 | 2 | |
| January 18, 2020 | Division | Losers 4 | 5 | 3 | 2 | 2 | 2 | |
| November 21, 2020 | Division | Losers 4 | 4 | 2 | 2 | 2 | 2 | |
| February 6, 2021 | Division | Losers 3 | 4 | 2 | 2 | 2 | 1 | |
| May 15, 2021 | Division | Losers 3 | 3 | 1 | 2 | 1 | 2 | |
| July 24, 2021 | Division | Losers 4 | 4 | 2 | 2 | 2 | 2 | |
| March 26, 2022 | Division | Elimination 2A | 3 | 1 | 2 | 1 | 2 | |
| April 23, 2022 | Division | Elimination 7 | 7 | 5 | 2 | 3 | 2 | |
| July 16, 2022 | Division | Elimination Round 3 | 3 | 1 | 2 | 1 | 2 | |
| March 18, 2023 | Division | Boss | 2 | 0 | 2 | 0 | 2 | |
| August 12, 2023 | Division | Bracket Round 3 | 5 | 3 | 2 | 1 | 0 |
Opponents
| Opponent | Fights | W | L | KOs | KO'd | Last Meeting |
|---|---|---|---|---|---|---|
| Foiled Again | 2 | 2 | 0 | 2 | 0 | September 28, 2019 |
| Professor Hex | 2 | 2 | 0 | 2 | 0 | March 26, 2022 |
| Fully Defined | 2 | 1 | 1 | 1 | 1 | April 23, 2022 |
| Sepi01 | 2 | 0 | 2 | 0 | 2 | July 24, 2021 |
| Death Adder | 1 | 1 | 0 | 1 | 0 | September 28, 2019 |
| Sea Devil | 1 | 1 | 0 | 1 | 0 | November 21, 2020 |
| Drum Go Dum | 1 | 1 | 0 | 1 | 0 | November 21, 2020 |
| Marceline | 1 | 1 | 0 | 1 | 0 | May 15, 2021 |
| BX11B | 1 | 1 | 0 | 1 | 0 | July 24, 2021 |
| Spine Crawler | 1 | 1 | 0 | 1 | 0 | July 16, 2022 |
| Protostorm | 1 | 1 | 0 | 1 | 0 | January 18, 2020 |
| Wheels Are Tasty | 1 | 1 | 0 | 1 | 0 | January 18, 2020 |
| Meili | 1 | 1 | 0 | 1 | 0 | January 18, 2020 |
| Crossbow | 1 | 1 | 0 | 1 | 0 | February 6, 2021 |
| Doom | 1 | 1 | 0 | 1 | 0 | February 6, 2021 |
| WhirlWax | 1 | 1 | 0 | 1 | 0 | August 12, 2023 |
| Absolute Zero | 1 | 1 | 0 | 1 | 0 | August 12, 2023 |
| Dragonfruit | 1 | 1 | 0 | 1 | 0 | August 12, 2023 |
| Sisyphus + The Rock | 1 | 1 | 0 | 1 | 0 | August 10, 2019 |
| Sombra (3lb) | 1 | 1 | 0 | 1 | 0 | April 23, 2022 |
| Lunch Break | 1 | 1 | 0 | 1 | 0 | April 23, 2022 |
| Clyde | 1 | 1 | 0 | 1 | 0 | April 23, 2022 |
| Spartan | 1 | 1 | 0 | 1 | 0 | April 23, 2022 |
| BDE | 1 | 0 | 1 | 0 | 1 | September 28, 2019 |
| Silent Spring | 1 | 0 | 1 | 0 | 1 | September 28, 2019 |
| Nitro Hornet | 1 | 0 | 1 | 0 | 1 | November 21, 2020 |
| Voxel (3lb) | 1 | 0 | 1 | 0 | 1 | November 21, 2020 |
| Blackbird | 1 | 0 | 1 | 0 | 1 | May 15, 2021 |
| Wreckfest | 1 | 0 | 1 | 0 | 1 | March 26, 2022 |
| NotDeadYet | 1 | 0 | 1 | 0 | 1 | March 18, 2023 |
| Brute | 1 | 0 | 1 | 0 | 1 | March 18, 2023 |
| Honeycomb | 1 | 0 | 1 | 0 | 1 | July 24, 2021 |
| Voxel v.1 | 1 | 0 | 1 | 0 | 1 | July 16, 2022 |
| Shreddit Bro | 1 | 0 | 1 | 0 | 1 | July 16, 2022 |
| Wasp | 1 | 0 | 1 | 0 | 1 | January 18, 2020 |
| Tiny Huge | 1 | 0 | 1 | 0 | 1 | January 18, 2020 |
| Eruption | 1 | 0 | 1 | 0 | 1 | February 6, 2021 |
| Scrambler | 1 | 0 | 1 | 0 | 1 | August 10, 2019 |
| Dread Hades | 1 | 0 | 1 | 0 | 1 | April 23, 2022 |
| Lynx | 1 | 0 | 1 | 0 | 1 | April 23, 2022 |
| Bison | 1 | 0 | 1 | 0 | 0 | February 6, 2021 |
| Ratfish | 1 | 0 | 1 | 0 | 0 | August 12, 2023 |
| Kili | 1 | 0 | 1 | 0 | 0 | August 12, 2023 |
Click "Expand" to see this table.
Full Fight History
| Date | Opponent | Round | Result | By | Points | Fight Length (s) | Video |
|---|---|---|---|---|---|---|---|
| August 10, 2019 | Trident | Winners 1 | Loss | Forfeit | 0.00 | ||
| August 10, 2019 | Foiled Again | Losers 1 | Win | KO | 1.00 | 68 | https://youtu.be/_ErE7kddM80?t=1918 |
| August 10, 2019 | Toasty | Losers 2 | Win | Forfeit | 0.00 | ||
| August 10, 2019 | Sisyphus + The Rock | Losers 3 | Win | KO | 1.00 | 42 | https://youtu.be/_ErE7kddM80?t=3405 |
| August 10, 2019 | Scrambler | Losers 4 | Loss | KO | -1.11 | 65 | https://youtu.be/_ErE7kddM80?t=4085 |
| September 28, 2019 | Foiled Again | Winners 1 | Win | Judges Decision | 1.00 | 180 | https://youtu.be/weuEDgtspwU?t=1 |
| September 28, 2019 | Silent Spring | Winners 2 | Loss | KO | -1.00 | 29 | https://youtu.be/KZ0kPd_L1Bw |
| September 28, 2019 | Death Adder | Losers 2 | Win | KO | 1.00 | 37 | https://youtu.be/7S9_Ixr36_I |
| September 28, 2019 | BDE | Losers 3 | Loss | KO | -1.33 | 80 | https://youtu.be/R2m5htZtq3c |
| January 18, 2020 | Protostorm | Winners 1 | Win | KO | 1.00 | 22 | https://youtu.be/mR3lnezxzF8?t=7488 |
| January 18, 2020 | Tiny Huge | Winners 2 | Loss | KO | -1.00 | 68 | https://youtu.be/mR3lnezxzF8?t=11888 |
| January 18, 2020 | Wheels Are Tasty | Losers 2 | Win | Judges Decision | 1.00 | 240 | https://youtu.be/mR3lnezxzF8?t=19535 |
| January 18, 2020 | Meili | Losers 3 | Win | KO | 1.00 | 65 | https://youtu.be/mR3lnezxzF8?t=24883 |
| January 18, 2020 | Wasp | Losers 4 | Loss | KO | -1.00 | 83 | https://youtu.be/mR3lnezxzF8?t=27977 |
| November 21, 2020 | Voxel (3lb) | Winners 2 | Loss | KO | -1.00 | 32 | https://youtu.be/shBFEDnKC28 |
| November 21, 2020 | Sea Devil | Losers 2 | Win | KO | 1.00 | 118 | https://youtu.be/CbwqE_vDBU4 |
| November 21, 2020 | Drum Go Dum | Losers 3 | Win | KO | 1.00 | 84 | https://youtu.be/HTFb0QA8BJg |
| November 21, 2020 | Nitro Hornet | Losers 4 | Loss | KO | -1.11 | 113 | https://youtu.be/AlKV-lYIf5U |
| February 6, 2021 | Pipe Bomb | Winners 1 | Win | Forfeit | 0.00 | ||
| February 6, 2021 | Eruption | Winners 2 | Loss | KO | -1.32 | 50 | https://youtu.be/9Rib27rbbfc?t=5689 |
| February 6, 2021 | Doom | Losers 1 | Win | KO | 1.00 | 151 | https://youtu.be/9Rib27rbbfc?t=14545 |
| February 6, 2021 | Crossbow | Losers 2 | Win | KO | 1.00 | 28 | https://youtu.be/9Rib27rbbfc?t=16789 |
| February 6, 2021 | Bison | Losers 3 | Loss | Judges Decision | -1.21 | 180 | https://youtu.be/9Rib27rbbfc?t=23849 |
| May 15, 2021 | Sepi01 | Winners 2 | Loss | KO | -1.24 | 32 | https://youtu.be/x5Co8AkBmsQ |
| May 15, 2021 | Hobgoblin | Losers 1 | Win | Forfeit | 0.00 | ||
| May 15, 2021 | Marceline | Losers 2 | Win | KO | 1.00 | 27 | https://youtu.be/Sww-vsWSQBw |
| May 15, 2021 | Blackbird | Losers 3 | Loss | KO | -1.00 | 114 | https://youtu.be/TJ3-Va6kzy0 |
| July 24, 2021 | Fluffy Death Machine | Winners 1 | Win | Forfeit | 0.00 | ||
| July 24, 2021 | Honeycomb | Winners 2 | Loss | KO | -1.04 | 64 | https://youtu.be/w00PthxWHOE |
| July 24, 2021 | BX11B | Losers 2 | Win | KO | 1.00 | 109 | https://youtu.be/db9gNOqaij4 |
| July 24, 2021 | Professor Hex | Losers 3 | Win | KO | 1.00 | 50 | https://youtu.be/-IJooaRa5-s |
| July 24, 2021 | Sepi01 | Losers 4 | Loss | KO | -1.12 | 110 | https://youtu.be/FxRJfyhlsr0 |
| March 26, 2022 | Professor Hex | Undefeated 1B | Win | KO | 1.00 | 24 | https://youtu.be/uZmq9Hl75Ts?t=7244 |
| March 26, 2022 | Fully Defined | Undefeated 2 | Loss | KO | -1.00 | 135 | https://youtu.be/KgyKEvpO6uU?t=5220 |
| March 26, 2022 | Wreckfest | Elimination 2A | Loss | KO | -1.15 | 53 | https://youtu.be/ayB8B9kGa6k?t=14471 |
| April 23, 2022 | Lunch Break | Undefeated 1 | Win | KO | 1.00 | 39 | https://youtu.be/It5MpH50dvs?t=4958 |
| April 23, 2022 | Dread Hades | Undefeated 2 | Loss | KO | -1.00 | 78 | https://youtu.be/wf528BQr0eA?t=7202 |
| April 23, 2022 | Clyde | Elimination 2 | Win | Judges Decision | 1.06 | 180 | https://youtu.be/LmS-A1QhbRc?t=10516 |
| April 23, 2022 | Sombra (3lb) | Elimination 3 | Win | KO | 1.08 | 69 | https://youtu.be/wf528BQr0eA?t=19208 |
| April 23, 2022 | Drum Go Dum | Elimination 4 | Win | Forfeit | 0.00 | ||
| April 23, 2022 | Fully Defined | Elimination 5 | Win | KO | 1.16 | 15 | https://youtu.be/wf528BQr0eA?t=26935 |
| April 23, 2022 | Spartan | Elimination 6 | Win | Judges Decision | 1.07 | 180 | https://youtu.be/wf528BQr0eA?t=30400 |
| April 23, 2022 | Lynx | Elimination 7 | Loss | KO | -1.00 | 36 | https://youtu.be/wf528BQr0eA?t=34810 |
| July 16, 2022 | Voxel v;1 | Undefeated Round 2 | Loss | KO | -1.28 | 85 | https://youtu.be/Y7ICJDeDdfY?t=5996 |
| July 16, 2022 | Spine Crawler | Elimination Round 1 | Win | KO | 1.00 | 75 | https://youtu.be/Y7ICJDeDdfY?t=11094 |
| July 16, 2022 | Skitter | Elimination Round 2 | Win | Forfeit | 0.00 | ||
| July 16, 2022 | Shreddit Bro | Elimination Round 3 | Loss | KO | -1.00 | 93 | https://youtu.be/p76hqdy44QU?t=20895 |
| March 18, 2023 | Brute | Round 2 | Loss | KO | -1.13 | 17 | https://youtu.be/oTohTyfcm5A?t=5870 |
| March 18, 2023 | NotDeadYet | Boss | Loss | KO | -1.00 | 66 | https://youtu.be/gdrBzzkFkVg |
| August 12, 2023 | Ratfish | Qualifier Round 1 | Loss | Judges Decision | -1.14 | 180 | https://www.youtube.com/live/nAXvrZdnceQ?feature=share&t=2580 |
| August 12, 2023 | WhirlWax | Qualifier Round 2 | Win | KO | 1.00 | 26 | https://youtu.be/Y9twilXzDpA?t=5808 |
| August 12, 2023 | Absolute Zero | Bracket Round 1 | Win | Judges Decision | 1.18 | 180 | https://youtu.be/IMD6ArOMrPY?t=16925 |
| August 12, 2023 | Dragonfruit | Bracket Round 2 | Win | Judges Decision | 1.00 | 180 | https://youtu.be/IMD6ArOMrPY?t=24805 |
| August 12, 2023 | Kili | Bracket Round 3 | Loss | Judges Decision | -1.00 | 180 | https://youtu.be/4OYtS0Qtngw?t=29720 |
* Forfeits before the 2024 season are not counted in a bot's W-L record. Forfeits from 2024 and on are counted in a bot's W-L record.
For more information on how points are calculated for rankings, click here.
Click "Expand" to see this table.
Version 3.5 (July 2023 Redesign)
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.
Version 3 (2022 Redesign)
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,
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:
- The TPU wheels should survive multiple huge impacts without losing functionality, and absorb shock well
- The dead axel should never bend or break without other elements failing spectacularly first
- The single stage reduction is far lighter than a planetary gearbox, way cheaper, and more robust
- Custom molded 30A urethane tires have superior grip to foam wheels and most Banebots wheels
- More than 4X the drive power of even Fingertech Mega Sparks on 4S
- Every part can be easily serviced in minutes
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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.
- 1 Piece Construction, saving about 30 screws
- Much more rigid and less likely to permanently bend than prior baseplate
- Cost is only ~$22 of metal, outsourcing for about $62 each with sponsorship
- Upright mounting is vastly improved, and much better constrained square to the baseplate
- Uprights no longer need to be drilled and end tapped, and are now purely 2D lasercut parts
- Far greater design freedom with 3D vs 2D construction
- Far greater overall stiffness
- Solid single part metal connections, way stronger than Nylon printed parts and screws which frequently failed
- Integrated top panel screw holes, avoiding headaches with threaded standoffs in prior versions
- Rear threaded holes allow for modularity with future rear attachments
And many more!
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.
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.
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.
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.
Notable Facts
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.
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.
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
Combat History
V2.7-V2.12 (2021)
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 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.
V1.0, V2+ (2020)
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.
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.
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.
