Pete, what gearbox? I've established that if you want speed, the stock gearbox with Graupner Speed400s cooled with a fan and or heatsink is the way to go. I have those motors in my BullDog. The Pershing runs great with the stock gearboxes and the white endbell Suntech motors.

This rest of this post, my part in it, will focus on the best gearbox and motor combination with the new 3-1 gearboxes and then in conjunction with El Mod.