Why do I feel I'm seen as a newbee by you, Lostdreamer?

It's still Robot wars, not Barbie Bumpercars.


With a good drivetrain stall is rare.
Only mechanical failure wil do that. Shattered magnets due shockdamage is the most common atm.
A good second is jammed gears/chain after huge impacts.

Battledamage is battledamage.

With a load of fuses everywere you just going to protect the fiddly bits untill the disk goes trough those after the fuse did do the protecting.

I rather fry a £250motor than lose a battle because a £ 0.3 fuse went early.

Oh, of course, not to forget, electronic components getting ripped off the PCB is another common failure in our machines.
Again, purely mechanical, due the G-loading during the impacts.
Most spectacular are big LiPo's with a good charge in them. Short those and you have a nice smokescreen going. if the short happens in the cells, or before any fuse, (in the few cm of wire comming out of the pack), your £0.3 fuse could survive.

But that's me.

For the rest. Cannibalising scooter motors is a way to go.
But it's a lot easier to buy the now common MY1020 scootermotors (in any powerflavor you wish) from Ebay or simular sites.

If you want cheap power, look at older startermotors.(difficult to control tough)

Weight of a heavyweight shell.
The bodyshell of Bullfrog is 1000mm long, 500m wide and 180mm high. Weight, around 25 kg, all Hardox 450 3.2mm thick.
The drives have own armor, and each drive is 14.8kg.