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An AP mount is one option, but more practical is something I saw on the Losmandy Yahoo group. You'll have to do a search there, although it might be in the files section.Basically you wrap a cord around the RA axis and have it coming off the east side with a weight on the end. The beauty of this is that the torque remains constant as the hour angle varies.
Geoff
Note added: should have read the earlier post describing this. However there are pics on the Losmandy site, so I'll leave this post as a pointer
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