pic: Shifting Drivetrain with Transmissions

[Jared]

Originally Posted by JesseK

It needs encoders. Encoders are usually a trivial thing to do, but on this particular design it looks like an idler sprocket, gear or wheel would have to be used?

We have a bunch of Grayhill encoders, so my plan was to put one on the back of the gearbox, and use a piece of surgical tubing as a shaft coupler between the gearbox and the encoder shaft.

254 puts one of the US digital encoders (the S4, IIRC) with ball bearings on the end of their outer wheel shaft, and just zip ties it in place.