I use a BoB trailer but on the trike the loads are different. I have a Scram DualDrive on the trike, I wanted to keep it so the trailer had to be mouted different then the directions (PIC) Recently I installed a 500W Crystalyte hub laced into the 16" wheel on the BOB. The torque is amazing, it's all about hill assist, it's way beyond my expectations........Sweet Ride