Chonki Design Guide

Chonki Design Guide

Chonki
(Highlight text)
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!!!

Introduction

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

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.

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