[Omaroo (Chris Malikoff)]

Originally Posted by Bassnut

And Chris, the standard Gemini encoders are on the motors, not on the output shafts, so if the clutch slips, you lose position.

You're right Fred - I should have said "additional shaft encoders". These act as an adjunct to the standard set and plug into the Gemini through a specific encoders port, and do allow you to loosen your clutches and push to a new location without losing your positional data. I'll be using a set of these in conjunction with an Argo Navis shortly as I opted not to have Gemini.