Mounting encoders on a Clamping Gearbox (VEX)

[JesseK]

Originally Posted by lynca

1. How are you incorporating a clamping gearbox in your lift ? (i.e. what reduction are you getting off the gearbox)

2. Do you have a picture of the encoder at the end of the shaft for WCD drivetrains ?

1.) The lift is 11:72 -> 16:22 (chain) for a total reduction of 9:1 coming off a CIM. We have other options, including smaller sprockets, bigger sprockets, and/or a mini-CIM depending on how the PID response goes. To me that's what makes this particular gearbox very versatile.

2.) I'll snap a photo of the WCD shaft tonight, but here's a description until then. I gave this problem to our machining team in the preseason and they came back with something I haven't seen, but it is something we're very comfortable manufacturing in-house. We took ~4.5" of VEX Pro Hex, turned down a shoulder on one end to 3/8" and put it in a die for a 3/8-16 aluminum nut. We then bored a drill bit 'D'-size hole in the same end for a very nice snug fit of a Greyhill 63R encoder. The other side is tapped 1/4-20, 1/2" depth. Locktite all around.