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Regarding the power source: The power input to the 492 goes directly to a 5V linear regulator, so any input voltage over about 7V is just wasting power — it won’t benefit the motors. -Les

Dooh! I knew that! But this just makes my comments even more relevant as the integrated stepper/gearbox is even better sealed than the servomotor gearboxes. Additionally with the higher gear

Chip, Bob is running the 492 drive with the stepper motors. They have a 150:1 gearbox. Don

Bob, If your mount is only two years old the gearbox lube is probably fine because the gears and lube are all sealed up in a nice closed clean environment that operates at a very low load and

Thanks to everyone for your answers. I actually just set the mount on the table and ran it without the CW shaft and everything seemed fine. Software seemed to connect and control properly. The only

Hi Linda, My old G11 was a 15 year old mount that had a new Gemini 2-mini w/HT-motors and HP worms on both axes. I had Scott rebuild this old G11 as a fully optioned current spec. G11G - Gemini

Linda, As the shaft weighs over 2 kg, I suggest you remove it also. There should be no problem in running Gemini without a load. David

You can set the Gemini Tracking rate to Terrestrial mode (not sidereal, lunar, solar,...etc). This stops the RA worm and tells Gemini not to expect any ticks from the optical encoders. As for the

I’m working on getting my GM811 set up with software and I had a question about what was the appropriate way to run the mount without any OTA. Should I remove the counterweight shaft or leave the

Hi Don! Ohhh. Unless I saw the grease I would have forgotten about it. Didn't even think about the gears. I hope I can get to this this week. Thanks! Bob

Bob, With the 492 system, don't forget about the grease in the motor gearbox. That grease can cause a slowdown much more than the grease on the worm. Don

Hi Bob, If possible you really want to use solvent to wash out the old grease and contaminants, blow out the bearings with plenty of compressed air BUT be ready for a lot of black lube to come out

Greg, I have SharpCap 3.1 polar alignment works very well, actually excellent. I just preferred the PoleMaster's camera sensitivity and software guidance. The PoleMaster's software, to me anyway,

Hi Chip! I've been reading along about the gear mesh vs temp discussion. Interesting. My gears are barely meshed (I really have to adjust things at some point -- just haven't gotten around to

Hi Bob, I have had two issues with changes in air temps and tracking error, lubricant as you mention and worm gear mesh. Whatever lubricant is used by Losmandy seems to get stiffer as it gets

I have a 2 year old GM-8 and was out Saturday night as the temps got close to freezing. I think the grease in the mount got close to freezing too. The mount started getting real quiet -- not silent,

Now that the trees have dropped their leaves I was able to try the polar alignment tool in Sharpcap. Pretty amazing... got a decent alignment in record time and a lot more fun than my old drift

Howard's project is well known and the group is very active and actively working one improving the system. Have you tried it on a G11 yet? Chip

All of my astro efforts are done at sites several hours drive away. I have used agm and gel cell batts for running computers mount and cameras. A 79 AH agm has worked well except in cold weather for

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