Sorry I am not 100% certain which single speed AM transmissions the rookies got in their kit last year.
I am guessing it was
http://www.andymark.com/CIMplebox-p/am-0734.htm
Anyone tried adapting a standard 63R Grayhill encoder to it ? Hard, easy ? Is there enough room between the cims ?
Our rookie team wants to use Grayhills if possible. Unfortunately we don't own the transmission.
Thanks