Last time I used my Losmandy G11/Gemini-1, it kept giving "Motor Stalled" message when starting go-to alignment. I came to believe the problem was with the Dec motor/gear train.?
So yesterday during daylight hours, I had an opportunity to service the declination worm-gear set. I was able to tip the worm away from the worm-gear (ring-gear) without disconnecting from the drive motor. This allowed for cleaning the ring-gear of any debris that might be causing the motor to stall. An old toothbrush was used to clean each gear tooth and more uniformly distribute the lubricating grease. I see the need for a more thorough cleaning, to remove old grease and apply fresh lube. But for now I have done a quick service.
?
I used the opportunity to set the gear clearance for minimum free-play and backlash. Even though I could move the worm by hand with no resistance, upon tuning on the Losmandy G-11 electronics, I still got a "motor-stalled" warning. So I restarted and bypassed go-to alignment. Then selecting the "Sidereal" drive rate, I was able to use the hand controller to move both RA and Dec without motor stall error. Then restarting the electronics allowed for normal go-to alignment, without motor-stall errors. This led me to believe the problem was not mechanical - that is detritus where the gears meshed causing the stall. It appeared the problem was electrical or software. Now I'm hoping the mount will function properly under nighttime conditions.
Any comments, suggestions or advice would be appreciated.
Russ
Russell Milton