People complain how expensive the RC heavy plant is to have, the amount of enjoyment I get from mine makes them not expensive at all.
Probably be a 15rpm spur gear motor, bevel gear coupling.
Not really a weak point Ed, that's what a couple 100hrs @ 30 bar digging hard ground does to belts & pulleys.
Yes I did have a lot of irons in the fire this summer and not much time or ambition for the hobby Tom, I didn't even haul not one load of dirt outside. I have to redo all the hyd plumbing & electronics within the dozer... such a large model, I didn't want to do it in the house. I'm looking forward to my new workshop to tackle such projects.
Sure was Kalle