This is a CAD design for an Encoder Mount to mount a Grayhill 63R256 encoder to a VexPro WCP DS Gearbox. There are 2 versions of the mount, one for the left side of the gearbox and one for the right. Also included is a Sung Tube, this is a small tube that you can slip into the gear and will make the encoder fit into the gear properly.
And here are some pictures of how it mounts to the gearbox:
Here are the CAD files for all of the parts, the CAD for the gearbox can be downloaded from the VexPro website:
Encoder Mount (For Right Side of Gearbox):
Encoder With Mount Assembly (For Right Side of Gearbox):
Encoder Mount (For Left Side of Gearbox):
Encoder With Mount Assembly (For Left Side of Gearbox):