Division

From NHRL

Division is a Vertical Disk Spinner 3lb Robot.

Robot Facts

Division

Version 2.12 (Current as of July 2021 NHRL)

Driver Seth Schaffer from Team Just 'Cuz Robotics
Weight Class 3lb
Body Material Titanium & Aluminum
Weapon 7.5" Vertical Spinner
Weapon Drive Cobra 2814
Drive Custom Brushless 1806 15:1 Gearbox
Power 4S Lipo

Version 2.8 (November 2020 NHRL)

Weapon Drive Propdrive 2836 V2
Power 3S Lipo





Statistics

Record

Year Rank Events Fights W L % KOs KO'd Avg Time (s) KOs/F KO'd/F
2018-19 16 2 7 4 3 .571 3 3 - 43% 43%
2020 19 2 9 5 4 .556 4 4 - 44% 44%
2021 62 3 11 5 6 .455 5 5 - 45% 45%
All-Time 54 7 27 14 13 .519 12 12 83.0 44% 44%


Events

Date Reached Place Fights W L KOs KO'd
8/10/2019 Losers 4 3 2 1 2 1
9/28/2019 Losers 4 4 2 2 1 2
1/18/2020 Losers 4 5 3 2 2 2
11/21/2020 Losers 4 4 2 2 2 2
2/6/2021 Losers 3 4 2 2 2 1
5/15/2021 Losers 3 3 1 2 1 2
7/24/2021 Losers 4 4 2 2 2 2


Opponents

Opponent Fights W L KOs KO'd Last Meeting
Foiled Again 2 2 0 1 0 9/28/2019
Sepi01 2 0 2 0 2 7/24/2021
BX11B 1 1 0 1 0 7/24/2021
Professor Hex 1 1 0 1 0 7/24/2021
Marceline 1 1 0 1 0 5/15/2021
Crossbow 1 1 0 1 0 2/6/2021
Doom 1 1 0 1 0 2/6/2021
Drum Go Dum 1 1 0 1 0 11/21/2020
Sea Devil 1 1 0 1 0 11/21/2020
Meili 1 1 0 1 0 1/18/2020
Protostorm 1 1 0 1 0 1/18/2020
Death Adder 1 1 0 1 0 9/28/2019
Sisyphus + The Rock 1 1 0 1 0 8/10/2019
Wheels Are Tasty 1 1 0 0 0 1/18/2020
Bison 1 0 1 0 0 2/6/2021
Honeycomb 1 0 1 0 1 7/24/2021
Blackbird 1 0 1 0 1 5/15/2021
Eruption 1 0 1 0 1 2/6/2021
Nitro Hornet 1 0 1 0 1 11/21/2020
Voxel 1 0 1 0 1 11/21/2020
Tiny Huge 1 0 1 0 1 1/18/2020
Wasp 1 0 1 0 1 1/18/2020
BDE 1 0 1 0 1 9/28/2019
Silent Spring 1 0 1 0 1 9/28/2019
Scrambler 1 0 1 0 1 8/10/2019

Click "Expand" to see this table.


Full Fight History

Date Opponent Round Result By Fight Length (s) Video
8/10/2019 Trident Winners 1 Loss* Forfeit*
8/10/2019 Foiled Again Losers 1 Win KO 68 https://youtu.be/_ErE7kddM80?t=1918
8/10/2019 Toasty Losers 2 Win* Forfeit*
8/10/2019 Sisyphus + The Rock Losers 3 Win KO 42 https://youtu.be/_ErE7kddM80?t=3405
8/10/2019 Scrambler Losers 4 Loss KO 65 https://youtu.be/_ErE7kddM80?t=4085
9/28/2019 Foiled Again Winners 1 Win Judges Decision 180 https://youtu.be/weuEDgtspwU?t=1
9/28/2019 Silent Spring Winners 2 Loss KO 29 https://youtu.be/KZ0kPd_L1Bw
9/28/2019 Death Adder Winners 3 Win KO 37 https://youtu.be/7S9_Ixr36_I
9/28/2019 BDE Losers 4 Loss KO 80 https://youtu.be/R2m5htZtq3c
1/18/2020 Protostorm Winners 1 Win KO 22 https://youtu.be/mR3lnezxzF8?t=7488
1/18/2020 Tiny Huge Winners 2 Loss KO 68 https://youtu.be/mR3lnezxzF8?t=11888
1/18/2020 Wheels Are Tasty Losers 2 Win Judges Decision 240 https://youtu.be/mR3lnezxzF8?t=19535
1/18/2020 Meili Losers 3 Win KO 65 https://youtu.be/mR3lnezxzF8?t=24883
1/18/2020 Wasp Losers 4 Loss KO 83 https://youtu.be/mR3lnezxzF8?t=27977
11/21/2020 Voxel Winners 2 Loss KO 32 https://youtu.be/shBFEDnKC28
11/21/2020 Sea Devil Losers 2 Win KO 118 https://youtu.be/CbwqE_vDBU4
11/21/2020 Drum Go Dum Losers 3 Win KO 84 https://youtu.be/HTFb0QA8BJg
11/21/2020 Nitro Hornet Losers 4 Loss KO 113 https://youtu.be/AlKV-lYIf5U
2/6/2021 Pipe Bomb Winners 1 Win* Forfeit*
2/6/2021 Eruption Winners 2 Loss KO 50 https://youtu.be/9Rib27rbbfc?t=5689
2/6/2021 Doom Losers 1 Win KO 151 https://youtu.be/9Rib27rbbfc?t=14545
2/6/2021 Crossbow Losers 2 Win KO 28 https://youtu.be/9Rib27rbbfc?t=16789
2/6/2021 Bison Losers 3 Loss Judges Decision 180 https://youtu.be/9Rib27rbbfc?t=23849
5/15/2021 Sepi01 Winners 2 Loss KO 32 https://youtu.be/x5Co8AkBmsQ
5/15/2021 Hobgoblin Losers 1 Win* Forfeit*
5/15/2021 Marceline Losers 2 Win KO 27 https://youtu.be/Sww-vsWSQBw
5/15/2021 Blackbird Losers 3 Loss KO 114 https://youtu.be/TJ3-Va6kzy0
7/24/2021 Fluffy Death Machine Winners 1 Win* Forfeit*
7/24/2021 Honeycomb Winners 2 Loss KO 64 https://youtu.be/w00PthxWHOE
7/24/2021 BX11B Losers 2 Win KO 109 https://youtu.be/db9gNOqaij4
7/24/2021 Professor Hex Losers 3 Win KO 50 https://youtu.be/-IJooaRa5-s
7/24/2021 Sepi01 Losers 4 Loss KO 110 https://youtu.be/FxRJfyhlsr0

* Forfeits are not counted in a bot's W-L record.

Click "Expand" to see this table.

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 September 2021, Division has four 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 250 grams. Fights with Division very rarely make it the full three minutes - it is designed to end fights fast and decisively.

Division in 2021 has 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 resembles what it was back in 2019. Maybe it is approaching the time to start from scratch with V3.0?

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 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.

Select Fights