[lincpimp]

Ok, the slipper will not have the benifit of tranny gearing and will be overtaxed or simply just not work? Did not think of that. Any idea of a method to give the drivetran a little shock protection. Maybe mount the outrunner to the chassis with some sort of isolator. Rubber, or stiffer material, kind of like full size engine mounts. That would "give" a little to help the shock issue but be solid enough for good power transmission.

I will add a few caps to my quark, thinking of ditching the case and mounting up a heatsink directly to the fets that can also be attached to the chassis for addl heat dissapation. Mybe an al L bracket to the fets and then a heatsink onto that and attach the leg of the L bracket to the chassis. Probably a good idea to support the esc with shrink or some other method so that the weight is not completely supported by the fets. Maybe just shrink the esc to the bracket with some thermal paste and epoxy the heatsink to the bracket. Just an idea, something similar to yours but a little smaller!