Wheels ?

[Ocracoke]

A gear system can be fiddly, especially at the Antweight size and I don't know of any belt driven Antweights either.

The very simple option is to run 6 motors, one per wheel but 6 motors will mean a significant portion of the weight is devoted to this (approx 60g) and you have the added complication of finding a speed controller that is light enough but able to support 3 per side and have enough voltage from the battery as well (though saying that, the micro geared motors draw very little amperage so you might be OK on that front).

Tradeoff here is the armour. Osu used very thin Polypropylene but that was down to the weight of the electronics and the wooden frame. I am in the process of rebuilding that with 3mm PVC that should be more suitable.

I think, without having tried it, a pair of speed controllers that supports ~10A with 2S from a LiPo battery *might* work here but it is really at the edge doing a bit of rough calculating. 4WD might be a better call.