As noted before, my primary complaint with my LX200 has been the slop in the
superwedge. This slop was present in both the azimuth and altitude adjustments.
Altitude Fix
To source of slop in the altitude adjustment was within the mounting of
the two 1" diameter rods that are connected to the altitude screw. As you would
change directions with the altitude adjustment knob, the rods would spread apart, or come
closer together before any altitude change could take place. My modification was to
take four 1.25" bronze bushings and turn them down to fit snugly into the sides where
the rods fit. The inside diameter was turn to .875". The ends of the
1" rods were turned down to fit snugly into the bearings. The bearings still
allow the rods to rotate, while not allowing them to shift around.
Bushings - before and after
1" Rods, turned down
Bushing and Rod
Busing in side of wedge
Main plate and bushings
Azimuth Fix
The source of slop in the azimuth adjustment was due to the threads in
the azimuth thrust bar being oversize. This allowed the azimuth thrust bar to pivot
on the azimuth adjustment screw. To fix this, I machined a new azimuth thrust bar.
Instead of it being in contact with 1" of the azimuth threaded rod, my new
piece has 3" of contact. This has lead to virtually no slop at all in the
azimuth adjustment.
New and old Azimuth Thrust Bars
Drawing of new Azimuth Thrust Bar (There is an error in the drawing - the
1/2 - 18 thread is really 1/2 - 13)
North view of new Azimuth Thrust Bar
South view of new Azimuth Thrust Bar
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