Thanks bigford
Im not running a gear reduction on this truck but my diffs, gearbox and drive train are all as strong as I could get them. I forged every single moving part myself

to do any of the heavy pull stuff I just change my gear ratios, it gives me an excuse to pull my truck apart and checkthings too. the motor is a Tamiya TZ tuned that ive pulled apart and rewired the armature.
I'm trying to find another vid I have somewhere of this truck pulling 130kgs and the only trouble I had was traction lol