Alternate encoders?

[Jon Stratis]

Question for the CD community... We want to put encoders on our shooter wheels, however we have a small problem - we're using 1/2 inch shafts, and none of the encoders from US Digital support shafts that big!

We're direct-driving the shafts, so there's no real chance for us to stick the encoder elsewhere, short of adding belting over to an idler sprocket just for the encoder (which we don't really want to do).

So, any suggestions out there for a reasonably priced encoder that works on a 1/2 inch shaft that would mount similar to the US Digital ones?