Chonki Design Guide
Chonki Design Guide
| Chonki | |
|---|---|
| Year Of Creation | 2020-2021 |
| Versions | |
| Current Version | V 1.0 |
| Update Year | 2020-2021 |
| Wins/Losses | 0/0 |
| Information and Statistics | |
| Weight Class | Featherweight |
| Weapon Class | Shell Spinner |
| Combined Wins/Losses | 0/0 |
| Weapon Speed | 0 RPM on a pallet |
| Other | Chonk!!! |
Contents
Introduction
This robot had a name before a design. It born when Brian thought to himself, "Hey, it would be really funny if we named a robot Chonki and made it really, really big..." Throughout the design process the robot lived up to its name. Chonki is a 45lb shuffling shell spinner competing in the 30lb weight class. It was developed during 2020-2021. The drive system was iterated from that of Apachi. The weapon system was a brand new concept for BattleBots. The goal of Chonki was to evaluate the viability of shell spinners while taking advantage of the 1.5 time weight multiplier afforded by using a mechanism other than wheels for movement. Has not been to competition due to COVID cancellation, but showed promise during development.
Members:
- Brian Epstein (Lead)
- Dylan Fife (Mentor)
- Mihir Nagaraj
- Mesum Zaidi
- Emily Liu
- Janie Edgar
- Celina Huang
- Martha Leach
- Cole Sosnowski
- Colin Lyman
Drive System
Chonki utilizes a shuffler system for drive. It consists of two shuffler modules, each with 4 HDPE feet.
Weapon System
Nested Concept
Originally the shell was designed as a series of rings with progressively increasing diameters. The method of joining these rings together was thoroughly discussed. The two primary options were use of fasteners and through welding. Some advantages of this method were that it
Fastener Method
Pros:
- Avoids need to use welding (process with which we had little experience)
- Simple to align via hole placement in ring
- Easy to replace damaged bolts and or rings
Cons:
- Bolts are likely to shear under stress from hitting other bots
- Addition of holes to rings add stress concentrator, increasing likelihood of failure
Welding Method
Pros:
- Very strong joint between rings if done correctly
- Difficult to align rings and keep them aligned (flats were included on rings for this purpose, but a jig would still be required)
Cons:
- A single piece means the whole thing must be replaced after damage
- Welding is hard lol
Solid Concept
Instead of doing the nested concept, we simply decided to kill the Earth and mill the shell out of a massive block of steel.
Chassis System
Electronics
| Drive Motors | Turnigy Aerodrive SK3 - 5055-280KV Brushless Outrunner Motor
|
| Drive Motor Controllers | Flipsky Dual FSESC6.6 Based upon VESC6 with Aluminum Heatsink Mini Size |
| Weapon Motor | Scorpion SII-4035-250KV |
| Weapon Motor Controllers | AeroStar Advance 120A HV (6~12S) Brushless ESC (Opto) |
| Receiver | Hobby King 2.4Ghz Receiver 6Ch V2 |
| Remote Control | Hobby King 2.4Ghz 6Ch Tx and Rx V2 |
| Battery | 2x Turnigy Heavy Duty 5000mAh 6S 60C LiPo Pack w/XT90
2x Turnigy Graphene Panther 3000mAh 3S 75C Battery Pack w/XT90 |
