Re: Geared Dobsonian question
HOFFMAN@wmich.edu
Wed, 08 Mar 1995 09:57:05 -0400 (EDT)
IMHO, NEVER HEARD OF TRYING THAT.
Sorry for caps.
IMHO it wouldn't work very well, because of hysteresis in the
deformations (even tho invisible to the eye) in the "race" or track
that the rollers ride on. This would probably cause the motion to
be hard to start -- ie - "stick-slip", which is just what the Teflon
on Formica bearing manage to avoid.
As to a handle on a roller for motion, in tracking it would be too coarse,
in slewing, too slow.
Richard Hoffman