I've been thinking of upgrading to the 10K step encoders for my Argo Navis. Which means I would have a couple of 8192 step encoders for sale. They are brand new (never used, still in packaging). They cost AUD $149 each, PM me with an offer if you are interested. Keep in mind the new 10k step encoders only cost $80 ea.
Mechanical drawing here:
http://www.wildcard-innovations.com....ncoder_dim.gif