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Mark, ?Your comment on Sunil having is clutches unlocked to transport got me?to thinking. I transport my G-8 into the Mojave Desert for?Bortle 1/2 imaging and never do anything to the clutches. Am I risking damage to my drive trains or anything?else by not releasing the clutches? The entire mount is a foam and?plastic box latched tightly shut. Thanks Tom?

--- mjcw500@... wrote:

From: "Mark Christensen" <mjcw500@...>
To: [email protected]
Subject: Re: [Losmandy_users_io] ES Losmandy G11 RA Backlash
Date: Sat, 26 Dec 2020 07:08:53 -0800

Sunil,

First reaction is that RA backlash should never matter when guiding: The scope should be slightly heavy eastward and the guide rate should be less than 100%.
That way the RA never reverses and hence backlash is a complete non-issue.

To debug the problem I suggest you turn off dither along with any other "feature" - when diagnosing problems the simpler the configuration the better.
It may be the fact that you have dither turned on for both axes that is causing RA backlash to show up.

Second reaction is, have you tried readjusting the RA worm? That needs to be done with the motor removed while rotating the worm by hand so you can see and feel what is going on. The worm wheel (large gear attached to the axis) needs to go through the full rotation so that you don't bind on the (unknown) high spot on the gear.

Third reaction is, I hope for your sake than when you shipped it the clutches were loose!

Best Wishes,

Mark Christensen