pic: Shifting Drivetrain with Transmissions

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?

West Coast Drives typically put the encoder on one of the outer wheel shafts.

[JesseK]

Originally Posted by Andrew Lawrence

West Coast Drives typically put the encoder on one of the outer wheel shafts.

So? WCD's usually do not drill/tap the ends of the shafts either, and that's the #1 thing which complicates adding an encoder to the outer wheel shaft. What would you do to mount an encoder?

For example, could one of the button head bolts could be replace with a hex head bolt, and that hex head bolt be drilled out to the diameter of a grayhill encoder shaft? What happens to the encoder if the bolt works loose?

[MichaelBick]

Originally Posted by JesseK

So? WCD's usually do not drill/tap the ends of the shafts either, and that's the #1 thing which complicates adding an encoder to the outer wheel shaft. What would you do to mount an encoder?

I don't know about other teams, but I know that we always drill the outer shaft for a 1/4" encoder shaft.