[MrForbes]

ok, I fibbed....we did the surgical tubing trick last year, this year we used a short piece of rubber automotive fuel line. The concept is the same.

The AM transmissions have a shaft with an end that is exposed, and turns with the output sprocket. We drilled and tapped the end of the shaft, then made a short piece of metal 1/4" diameter with a thread sticking out the end, which screws into the transmission shaft. Then just slipped the tubing over this short shaft and over the encoder shaft, and made a mounting bracket for the encoder. A lathe was used to drill the hole and make the adapter shaft.

The picture shows the mounting and protection for the encoder, and if you look close you can see a red tube clamp in there...the tube was not a very tight fit on the shafts.