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===Robot Facts===
===Robot Facts===
[[File:Chonkiii-FlatShell.png|thumb|Chonkiii With Flat Shell]]
[[File:Chonkiii-FlatShell.png|thumb|Chonkiii With Flat Shell]]
[[File:Chonkiii-TaperedShell.png|thumb|Chonkiii With Tapered Shell]]
[[File:Chonkiii-removebg (1).png|thumb|Chonkiii With Tapered Shell]]

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Chonk
Chonkiii is the third iteration (identified by the three i's in the name) of a 45 lb shuffling shell spinner from Georgia Tech's RoboJackets. Chonkiii is actually not based off of Gigabyte, instead we were inspired to make a shuffler from how noisy Knock Off White was in the Motorama test box and a giant shell just happened to be the best way to make a big, noisy, and "chonky" robot.
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{| class="wikitable" style="width: 60%"

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{| class="wikitable" style="width: 50%" alight="left"
|-
|-
| Builder || GT RoboJackets (See below for members)
| Builder || [[GT RoboJackets]] (See below for Chonkiii members)
|-
|-
| Drivers || Brian Epstein, Jacques Wang
| Drivers || Brian Epstein, Jacques Wang
Line 19: Line 21:
| Drive || Turnigy Aerodrive 4250-500KV, Dual Cam Shuffler
| Drive || Turnigy Aerodrive 4250-500KV, Dual Cam Shuffler
|-
|-
| Power || Weapon: 6S 2000mah MaxAmps for each weapon
| Power || Weapon: 6S 2000mah MaxAmps for each weapon motor
Drive: 5S 3250mah MaxAmps
Drive: 5S 3250mah MaxAmps
|-
|-
Line 40: Line 42:


== Overview ==
== Overview ==
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At its core, Chonki is designed to absorb large hits and win through attrition. Chonkiii’s full body shell ensures that, when spun up, Chonkiii does not have a clear weak spot. The tapered shell is ¼” thick and weighs 24lbs. To accommodate for the increased weight, Chonkiii uses a shuffling drive system and utilizes a 150% weight bonus.

=== Concept Motivation ===

Chonki as a concept started as a name and not a design. Brian initially thought "Hey, it would be really funny if we named a robot Chonki and made it really, really big and really really loud..." The more practical goal of Chonki was to utilize the 1.5 times weight bonus from not using wheels for movement to evaluate shell spinners. In its second iteration, Chonkii lived up to its name and goal, attracting many viewers and hearing protection at competition due to the loud noise of the shufflers on steel floors. While Chonkii did manage to achieve many of its goals and function during competition, it had much room for improvement. In its third iteration, Chonkiii’s concept motivation is simplistically to take Chonkii, make it work, and make it work even better.

=== Purpose ===

Chonkiii is the third iteration of a 45 lb shuffling shell spinner BattleBot. The robot consists of a chassis that remains stationary relative to the ground and a rotating steel shell that surrounds the entire robot. Chonkiii aims to improve on the design of the previous iteration’s shuffling module by improving the components or areas we ran into issues with in competition. The goal is to design and implement a self-righting mechanism, a more durable shell, faster drive, and superior traction on the feet.

Now that Chonkii has seen competition, much of our design process focused on improving its durability and compatibility in competition. The self-righting bar extends up and outward from the robot, acting as a lever arm to push against the ground and shove it back up right. The shell was manufactured with a 50 degree slant to counteract horizontals and encourage more of a glancing hit than a direct one. The shell is also be manufactured out of a harder steel than Chonkii, which was made from un-hardened A36. The new shells are made from heat-treated 4140 steel, to prevent large dents that will cause the shell to wobble when it spins. More traction is needed to successfully compete with the speeds of the other robots, so the previous method of hot glue will be experimentally tested against new specially applied spikes.

=== High Level Design Overview ===

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At its core, Chonki is designed to absorb large hits and win through attrition. Historically, RoboJackets drivers have not been particularly skilled. Chonkiii’s full body shell ensures that, when spun up, Chonkiii does not have a clear weak spot. The tapered shell is ¼” thick and weighs 24lbs. To accommodate for the increased weight, Chonkiii uses a shuffling drive system and utilizes a 150% weight bonus.


== Chassis ==
== Chassis ==
The overall frame of the chassis forms a cylinder that fits inside of the rotating shell resting on top of it. The self-right bar extends from the top of the center shaft to enable the bot to re-right itself if it is ever flipped on its top. The HPDE side plates on each side of the bot provide protection for the internal electronics while also not adding much weight. These features can be seen in the image of the chassis below.
The overall frame of the chassis forms a cylinder that fits inside of the rotating shell resting on top of it. The self-right bar extends from the top of the center shaft to enable the bot to re-right itself if it is ever flipped on its top. The HPDE side plates on each side of the bot provide protection for the internal electronics while also not adding much weight. These features can be seen in the image of the chassis below.


== Drive System ==
== Drive ==
Chonki utilizes a shuffler system for drive. It consists of two shuffler modules, each with 4 UHMWPE feet. The feet sit on two parallel, keyed cam shafts. These allowed for the four feet to be positioned 90 degrees from each other, so feet would always be in contact with the ground through the cam shaft's rotation. To fit inside the feet get smaller as they move away from the chassis. The longer feet have fillets to clear the rollers and support which they sit under. The cams have offset keyed holes to accommodate the shafts and sit inside circular cutouts in the feet, which keep them parallel with the ground as it walks. The use of the shuffling system allowed Chonki a weight bonus, bringing the max weight to 45 lbs.
Chonki utilizes a shuffler system for drive. It consists of two shuffler modules, each with 4 UHMWPE feet. The feet sit on two parallel, keyed cam shafts. These allowed for the four feet to be positioned 90 degrees from each other, so feet would always be in contact with the ground through the cam shaft's rotation. To fit inside the feet get smaller as they move away from the chassis. The longer feet have fillets to clear the rollers and support which they sit under. The cams have offset keyed holes to accommodate the shafts and sit inside circular cutouts in the feet, which keep them parallel with the ground as it walks. The use of the shuffling system allowed Chonki a weight bonus, bringing the max weight to 45 lbs.


== Weapon System ==
== Weapon ==
Since the weapon on this bot also serves as its armor, it was imperative that the weapon be large enough for the robot to fit inside. An additional constraint was that it must be small enough that a reasonable thickness could be attained while still remaining under the desired percentage of the total weight of the robot (~50%).
Since the weapon on this bot also serves as its armor, it was imperative that the weapon be large enough for the robot to fit inside. An additional constraint was that it must be small enough that a reasonable thickness could be attained while still remaining under the desired percentage of the total weight of the robot (~50%).


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== Fun Fact ==
Shell was milled out of a 250 lb block of A36 steel. It took forever but was very effective in absorbing damage.
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Chonk

*Inspired by Hyperpolarized, it was later decided to drive the weapon by using a single driven wheel at the top of the bot, with rollers along the surface to give additional support. A central shaft was used as a dead axle support.

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== Trivia ==
*https://youtu.be/-03Uj4sr6hc
*https://youtu.be/-03Uj4sr6hc


{{Bot Stats|bot=Chonkiii|class=30lb}}
== Statistics ==

[[Category:30lb Bots]][[Category:NHRL 2023]]

Latest revision as of 05:11, 20 September 2023

Robot Facts

Chonkiii With Flat Shell
Chonkiii With Tapered Shell

Chonkiii is the third iteration (identified by the three i's in the name) of a 45 lb shuffling shell spinner from Georgia Tech's RoboJackets. Chonkiii is actually not based off of Gigabyte, instead we were inspired to make a shuffler from how noisy Knock Off White was in the Motorama test box and a giant shell just happened to be the best way to make a big, noisy, and "chonky" robot.

Builder GT RoboJackets (See below for Chonkiii members)
Drivers Brian Epstein, Jacques Wang
Weight Class 30lb
Body Material Aluminum Chassis, Heat Treated 4140 Shell
Weapon 24lb Shell with AR500 Impactors
Weapon Drive 2 X Scorpion 4035-380KV, Friction Drive
Drive Turnigy Aerodrive 4250-500KV, Dual Cam Shuffler
Power Weapon: 6S 2000mah MaxAmps for each weapon motor

Drive: 5S 3250mah MaxAmps

Transmitter/Receiver Taranis Q X7, FrSky X8R

Members:

  • Sydney Baker (Lead)
  • Mihir Nagaraj (Mentor)
  • Brian Epstein (Mentor)
  • Janie Edgar
  • Jacques Wang
  • Cade Tyler
  • Dan Vail
  • Christopher Bellflowers
  • German Ortega
  • Andrew
  • Gray
  • Maddie

Overview

At its core, Chonki is designed to absorb large hits and win through attrition. Chonkiii’s full body shell ensures that, when spun up, Chonkiii does not have a clear weak spot. The tapered shell is ¼” thick and weighs 24lbs. To accommodate for the increased weight, Chonkiii uses a shuffling drive system and utilizes a 150% weight bonus.

Chassis

The overall frame of the chassis forms a cylinder that fits inside of the rotating shell resting on top of it. The self-right bar extends from the top of the center shaft to enable the bot to re-right itself if it is ever flipped on its top. The HPDE side plates on each side of the bot provide protection for the internal electronics while also not adding much weight. These features can be seen in the image of the chassis below.

Drive

Chonki utilizes a shuffler system for drive. It consists of two shuffler modules, each with 4 UHMWPE feet. The feet sit on two parallel, keyed cam shafts. These allowed for the four feet to be positioned 90 degrees from each other, so feet would always be in contact with the ground through the cam shaft's rotation. To fit inside the feet get smaller as they move away from the chassis. The longer feet have fillets to clear the rollers and support which they sit under. The cams have offset keyed holes to accommodate the shafts and sit inside circular cutouts in the feet, which keep them parallel with the ground as it walks. The use of the shuffling system allowed Chonki a weight bonus, bringing the max weight to 45 lbs.

Weapon

Since the weapon on this bot also serves as its armor, it was imperative that the weapon be large enough for the robot to fit inside. An additional constraint was that it must be small enough that a reasonable thickness could be attained while still remaining under the desired percentage of the total weight of the robot (~50%).

Fun Fact

Chonk










Statistics

Info

  • Rank: #Error: no local variable "rankActive" has been set. in 30lb.
  • Last 5 fights: Error: no local variable "last_five" has been set.
  • Current streak: Error: no local variable "streak_type_current" has been set.Error: no local variable "streak_length_current" has been set. (Error: no local variable "num_kos_current_streak" has been set. KOs/KO'd)
  • Longest winning streak: Error: no local variable "streak_length_longest_winning" has been set. (Error: no local variable "num_kos_longest_winning" has been set. KOs)
  • Longest losing streak: Error: no local variable "streak_length_longest_losing" has been set. (Error: no local variable "num_kod_longest_losing" has been set. KO'd)
  • Avg fight time (seconds):

Record

Year Events Fights W L % KOs KO'd
2018-19
2020
2021
2022
2023
2024
All-Time


Events

Date Fought as Reached Place Fights W L KOs KO'd

Could not get URL https://stats.nhrl.io/statsbook/get_head_to_head.php?bot_name=Chonkiii after 3 tries.

Opponents

Opponent Fights W L KOs KO'd Last Meeting

Click "Expand" to see this table.


Full Fight History

Date Opponent Round Result By Points Fight Length (s) Video

* 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.

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