[ZACH P.]

I used two DeWalt XRP transmissions to create a set of two dual-CIM transmissions. The CIMs each have a 16 tooth gear drives a 35 tooth gear. The 35T gear is on a shaft that inputs to the XRP transmission. I used the secondary stage sun gear as the input. But to drive it I did not enlarge the hole and press it on a shaft. Instead, I modified a shaft collar with notches around the circumference to drive the pins on the back of the sun gear. The shaft collar attaches to the shaft and worked beautifully. Thus no high-cost EMDing needed.
The only problem I had was with the output sprocket. The sprocket was attached by threading the bore and screwing it on the transmission output with a washer and left-hand screw to top it off. Once, the chain was stuck during a match and I continued to drive. The transmission actually stripped the threads from the inside of the sprocket. It was both devastating and amazing.