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I would suggest that you leave PHD2's backlash compensation enabled.? It is a good way to judge the current residual backlash after any TVC compensation is applied.? Just make sure it never auto

Thanks all for the suggestions. I have completed all the cleaning and greasing plus readjusted the Dec worm gear. With hand testing it appears to have removed some of the backlash but the test will

If the motor gearbox is the culprit, you are in luck.? The gearbox and transfer gears present a constant amount of backlash and can be easily compensated for with TVC.? Just never let the

The worm/worm wheel interface (which is what your efforts have addressed) isn't the whole game: There is the motor gearbox, for example, along with any transfer gears between the gearbox output and

I think I'll be asking John Kmetz to send out some of the MP-50 lubricant he was mentioning. I did tear into the mount a bit last night and it's going to need a very thorough cleaning and regreasing.

Hi Ken, In my experience with my GM811, I was never able to get my raw (uncompensated) DEC backlash below about 2000mS (two seconds) by merely adjusting / tweeking / re-greasing.? And that was after

Hi, I have been getting some complaints from PHD2 that my Dec backlash is high and I used this video to adjust the spring loaded worm gear "https://www.youtube.com/watch?v=LGmj3bEDVNM". It didn't make

Are you planning to "tuck-in" the steppers and use belt drive reduction to transmit stepper motion to the worms or are you going classic Losmandy style straight line with the stepper coupled directly

I had a very dusty dirt road about 20 feet from my G11.. For me, as "closed" as possible was preferable.. Landlord wanted to pave it, but I threw a fit about that.. Didn't want a heat retaining piece

On Wed, May 14, 2025 at 07:51 PM, Jesse Lichtenberg wrote: > > <<< SNIPPED >>> > > I'm glad to hear that nothing is missing in the photos and that the spacer > rings are just undersized. I may pick up

Lots more good information here - thank you again! I was turned to the bellows coupler as an option after reading the OnStep forums regarding other G11 installations. What I've purchased is pretty

The center of gravity (CoG) of the scope and accessories is closer to the RA center of rotation (CoR. Thus the counter weights and weight of weight shaft and its housing being farter from the CoR than

On Wed, May 14, 2025 at 07:51 PM, Jesse Lichtenberg wrote: > > Thank you for all the replies here, I very much appreciate the advice on > where to head next. Double disc couplers were one I wasn't

It will probably work that way as well, Derek, maybe even better I'm just going by how it comes from the factory. User's choice. John --

Thank you for all the replies here, I very much appreciate the advice on where to head next. Double disc couplers were one I wasn't familiar with before. At the moment I have some bellows style

thrust washer, thrust bearing, thrust washer, spring washer, anodized donut, and finally the clutch knob. *** I much prefer thrust washer, thrust bearing, thrust washer, anodized donut, spring washer,

Ray,? Once I clean and regrease the unit I will do another run and slew the mount again after the OFF run. I just ran the ON session straight after the initial OFF session without a slew - seems odd

Good catch, Ray! I didn't notice that in the logs, but for sure, that's the worst place to measure PE. Celestial equator near the meridian would be a much better start :)

Hi Jesse, My second G11 is a refurbed 1997 era mount with the OnStep conversion. Since yours is even older I would recommend replacing all bearings and thrust washers, even the needle bearings inside.

Hi Ken, From your PEC ON log file: # Declination # 89.9472 The PEC ON log file shows that the mount's Declination was 89.9472, close to the celestial pole. This is a terrible place to measure periodic