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Bought my G11 with Gemini 2 new in 2017. I has worked perfectly for all these years with not much maintenance. It does not have the tucked in motors. I just recently noticed it is getting a bit noisy when slewing. I'm used to the normal sound it makes, now it is sounding a bit rough, like it needs some lubricating. I'm pretty good mechanically. Where can I find instructions on how to clean and lube the spur gears, or worm gears ??

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Gary Martin

G11/ C11 Edge HD

Gary,

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Are you sure it isn't the motor gearboxes?

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Mark C

First thought is that your drive motor(s) have loosened up and are not meshing tightly. If you loosen the 2 screws and then try to turn the motor CW or CCW and see which makes the sound less, then retighten. I think Losmandy has a YouTube video on this procedure. After that you may need new gearboxes and/or a teardown and relube with the Losmandy approved greases.

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Good luck.

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John

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Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user

It could be the gearboxes. I believe Losmandy refers to these as the Spur Gears, but I could be wrong. The two gears under the oval covers for both RA and DEC.?

You may want to contact Losmandy about parts for the non-tucked motor design. My tucked motor G11G2 has two outer spur gears under a black oval cover, and the gearboxes go between motor and bottom spur gear. The upper spur gear connects to a shaft linked to the Oldham coupler, and from there to the worm gear. How the older non-tucked design is done I have not seen personally.

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John

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Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user

On Mon, Jan 20, 2025 at 04:53 PM, Gary Martin wrote:

It could be the gearboxes. I believe Losmandy refers to these as the Spur Gears, but I could be wrong. The two gears under the oval covers for both RA and DEC.?