Okay,

So its mocked up with a removable drive train via 8 bolts. The whole thing comes out in one piece for easy maintenance. Running on Pallet truck heavy duty alloy wheels.

The batteries are spare motorcycle 12v i had lying around, but i have lipos ready to go when i am ready.

The drive is 2x scooter gearbox 24v left and right, with a mixer speed controller. Works really well and really easy to control.