well those tz85 hacked esc look very interesting

I'm thinking of using speed 900 but in a 4 wheel drive config (driving each side with one motor through chains with a gear reduction)
Works in my mind but alot of moving parts so to speak

Do you think the hacked tz85 would be up to 900's under load ?

Also , out of interest, what size wheels and gearbox ratio will you be running?