Combat Robotics

Vasilis

Version 1.0 · Retired

Preparing 3D model…

About the Bot

Vasilis was my first large diameter vertical spinner combat robot. It competed in the 3 lb Beetleweight weight class and weighed in at 2.99 lb. The weapon boasts a diameter of 145mm (~5.7in) and has a 30 degree rake. In early testing it sliced 3 of its own belts before I designed and implemented a belt guard. It also suffered from weight issues causing the rear armor to have it's size reduced to the point of near ineffectiveness. Despite all this, in it's first fight it achieved a quick knockout putting the opposing bot out of commission for the remainder of the day.

The design is somewhat inspired by the Battlebots Uppercut and Monsoon. Vasilis is named after the mythical sword of light and darkness from the fantasy novel series Fablehaven. A vastly improved version of this bot is currently in the works and will likely debut in early-to-mid 2026.

Competition Record

1st 0 2nd 0 3rd 1

2026

EventResult
AIME Presents: ROBOTRONICA7th / 9

2025

EventResult
AIME Presents: ROBOTRONICA3rd / 10

Complete Breakdown

CAD Views

Full assembly first, then cutting-plane cross sections — click to enlarge.

Vasilis full assembly CAD view
Cutting planes

Cross sections

Vasilis cross section
Vasilis cross section
Vasilis cross section

Component Details

Printed Parts

Printed Parts

Front Armor
95A TPU
Rear Armor
95A TPU
Wheels
95A TPU
Weapon Motor Mount
95A TPU
Drive Motor Mounts
95A TPU
Machined Parts

Machined Parts

Weapon
AR500 Steel
Weapon Uprights
3/8" UHMW
Top and Bottom Plates
1/4" UHMW
Rear Plate
3/8" UHMW
Electronics

Electronics

Battery
Gens Ace 11.1V 1000mAh 3S 45C Lipo
Weapon Motor
FingerTech S2838 Brushless Inrunner
Drive Motors
Repeat Compact Brushed Gear Motor
Weapon ESC
MB30020 20A Brushless ESC
Drive ESC
WEKA 20A Dual Brushed ESC
Receiver
Flysky FS-iA6B
Power Switch
FingerTech Mini Power Switch