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Worm drives


 

Hi all,
Very interesting postings on this group some of which make
interesting reading and have already solved some problems with my G11
mount.
Anyway I have recently stripped down and relubed my mount, the only
problem I have left is how to set up the worm drives.
It seems very awkward to get the pressure just right, it either feels
to tight or to slack against the drive wheel on both ra and dec,is
there any procedure to get this assembly spot on as it looks like the
only adjustment is on the two bolts that hold the bearing blocks in
place,any ideas?


Regards Bill Snowzell


Fred Park
 

Hi there,
I use a feeler guage and gradually increase space until the worm is free to
turn the wheel gear with a little backlash. In RA a little backlash is OK
since we only drive in one direction. Adjust balance so the motor drives
against a slight load. Make sure the clearence is proper for the full turn
of the wheel. And the latest on lubrication is to use Slick 50 as
recommended by Steve Losmandy.
Fred Park Amateur everything, astronomy with CG-11 ST-8, Coordinate III
Goto, Mira VER 6.0, radio amateur W9VLF, Master Gardener, Sailor,
Photographer, fisher, father, husband, lover and all in just 78 years.
Retired C/MSG USAF.
In Cloudy and rainy Gig Harbor Washington.

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