I finally got my beetle spinning today. Looks like its going to work well.

The design

It's a horizontal spinner with a single tooth 110mm Hardox disc and a waterjet cut aluminium chassis.
Disc is powered by a 28mm outrunner on 1:1 ratio with a red brick ESC on 3s Lipo.
Drive is 2 pololu motors with banebots wheels and botbitz ESCs
Will all be armoured in 2mm ti and 5mm HDPE and is currently just under 1kg with everything except armour.

And a spin up test



I aim to fit the drive tomorrow and give it a full test then but it seems good so far.