[starscream]

I custom made one of these for my Losi 8 because the ESC I was using could not handle the amp draw needed for startups. The smaller motor/esc performed very well and felt and performed "like" a nitro. I removed the clutch springs and used 4 clutch shoes for maximium grip/engagement. I wouldn't neccessarily recommend this unless you are trying to reduce cogging, reduce the amps needed during startup, or attempting to reduce the wear on metal to metal pinion/spur gears.