Team Just Cuz Robotics | Mini Mulcher V0.11 - Testing New Axehead Weapon (Uncut Bonus Video) 1lb Antweight Combat Robot @JustCuzRobotics | Uploaded 4 years ago | Updated 13 hours ago
Mini Mulcher Test - Axehead Weapon and Battery Life

Mini Mulcher is a 1-pound Antweight combat robot I've been working on for the past several months. It can use one of a couple ~5.4oz steel weapons and a fully 3D printed Nylon chassis and gears. At full speed the weapons spin at over 10,000 RPM.

I wanted to see if the bot could remain stable at 50% throttle with a better weapon, one which is less susceptible polhode instability (google intermediate axis theorem). Turns out that is indeed the case! Still not 100% perfect, but it's much much better.

This seems to have mostly solved my stability issues, though it requires a self-righting redesign. This weapon has a 7" effective diameter meaning 1" less reach but it is actually ~5 grams heavier than the long thin blade. However, the intermediate axis instability is basically a non-issue with this shape. The long bar has a 23:1 ratio of X to Y moment of inertia. This has about 3:1.

Interested in trying out this weapon design for yourself? Now you can!
bit.ly/AxeheadWepCAD

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