Division

Division is a Vertical Disk Spinner 3lb Robot.

Robot Facts

Division

Version 2.8 (November 2020 NHRL)

Driver	Seth Schaffer from Team Just 'Cuz Robotics
Weight Class	3lb
Body Material	Titanium & Aluminum
Weapon	7.5" Vertical Disk Spinner
Weapon Drive	Propdrive 2836 V2
Drive	Custom Brushless 1806 15:1 Gearbox
Power	3S Lipo

Tournament Results

2019

NHRL August (V1)	2 Wins - 2 Losses
NHRL September	2 Wins - 2 Losses

2020

NHRL January	3 Wins - 2 Losses
NHRL July 1	Did Not Compete
NHRL July 2	Did Not Compete
NHRL September	Did Not Compete
NHRL November	2 Wins - 2 Losses

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 seperate fights.

Combat History

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 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.

Changes being Considered

• Improvements to brushless gearbox housing for better mounting
• New alternate weapon design mixing the best features of the asymmetric disk and "S blade"
• 4S instead of 3S battery to allow the use of a lower KV weapon motor
• Bigger torquier weapon motor with 5mm shaft
• Switch to 16T motor pulley with Fairloc hub to allow slip on impacts without losing self-righting ability
• New motor mounting on the upright with no slots - just the perfect tension always