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David, Mel Bartel aslo has mentioned on his site a method described by Richard Berry about using an equatorial table with 3 pistons. I have seen a video clip of this somewhere but at present can not find the link.
I belive Mel has also done some work on cordiante transoformation such that we can map RA/Dec to the three-axis.
Anyways geting back on topic, i belive essentialy the design of the current dob base may need to be rethought to include a wedge or motorisation.
Motorisation may be more easily achived if the rocker base is designed for this function to beging with. That is it is designed to accomadate motor drives and electronics.
Equatorial Tracking will require a wedge or split ring, however Tracey's method described in my third link is one that keeps the dobb look and feel the same. One could also accomadate rings in Tracey's method to allow the EP's to be rotated into a comfortable viewing position. Tracey's method also alows us to keep the visual ease of the dob.
Regards
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