[AlecS]

Andrew is correct, we recommend mounting the encoder directly to a wheel shaft.

The VersaChassis Shaft has a .251" hole in the back of the shaft for a US Digital S4 encoder, or any 1/4" shaft encoder. We typically simply insert the encoder shaft into the wheel, and zip tie the wires of the encoder to the bellypan. This is a much easier way to use an encoder, due to the packaging of the DOG shifter.

Let us know if you have any more questions.