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Yes, but it remains the case that torque is not the same across the entire microstep cycle, leading to slight speeding up and slowing down.? We're not talking about lacking the torque to move the

You can increase torque by using a larger to smaller belt hub, which is the same as any large to small gear ratio. -- Brendan

Yes, it's a '96 G11. Parameters: *?Steps/°* Stepper-Steps *MICROSTEPS* GR1 Ratio GR2 Ratio Resolution *102400.0000* 400 *256* 1.0000 360 0.42 RA/Azm *102400.0000* 400 *256* 1.0000 360 0.42 Dec/Alt

Good info Michael.? Thanks for posting. ------------------------ Jim W Phoenix, AZ. USA Losmandy G11G w/ L6, NINA 3.0 / ASTAP, ASI2600MC Pro, ASI533MM Pro,?Sky-Watcher Scopes, Canon L Lenses.

Sky-Watcher CQ350.? The G11G is my portable mount.? The CQ350 is setup at my cabin in northern AZ.? I wanted a Mach2 but decided the price was too high. ------------------------ Jim W Phoenix, AZ.

Since the conversation has drifted to belt drives in RA, despite the title, I've changed the title.? Let me share what I learned with a mount of another brand. Microstepped stepper motors do not have

Belt drives like everything else have their own issues. LOL, so the mount is also bad at selling itself? LOL. Try offering your "bad" mounts at market prices, not what you imagine you think they are

What is your primary mount?

I gave up trying to sell my G11G.? Its my secondary mount now. ------------------------ Jim W Phoenix, AZ. USA Losmandy G11G w/ L6, NINA 3.0 / ASTAP, ASI2600MC Pro, ASI533MM Pro,?Sky-Watcher Scopes,

Since I now have an EQ8-R Pro and the stubborn G11 that doesn't want to sell, and they both easily install on my Primalucelab C120 pier, it is interesting to compare and contrast them. The EQ8R-Pro is

Pete, Direct drive using stepper motors are not a great idea. Do the math and watch what happens to your drive line smoothness and controller granularity when you switch to a micro stepping motor

Hi Chip, Ok the DEC motor is as quiet as my belt driven eq6-r pro now, thanks for the tip NOT overtighten it! RA is better, but not as quiet as DEC but, I'll leave it for now think maybe that's just

What make and model mount is that? Direct drive seems like a good idea.

Thanks Chip, I'll give it a try! George, I don't have an explanation for that either, but the method from that 2nd video did help eliminating the backlash - that is, leave a little space, torque the

That spacing isn't relevant. The end play of the worm is controlled by the positioning of the bearing blocks. I don't see how you can avoid backlash with the all the gears in the motor's reduction

Yue, If the mount is loud when slewing you might improve the whining sound by adjusting the servo motor pinion to gear box mesh. This is accomplished by loosening the two servo motor mounting screws

Truth be told,? Opted for the 151PHQ.?? Smaller, less focal length, better image scale for the cameras I have, a little more forgiving on the tracking / guiding too.? Not to mention easier going

Ok John, I'll go read more on this 76s error, I think now I got the basic, general idea what it is and I'll keep an eye on it. Yes, the DEC backlash was the only issue I've had, RA was fine straight

Hi Yue, If you search for 76s error in this forum, I think you will many past conversations on the topic. If the worm bearings are not axially compressed, the balls will not ride in the inner race

Thank you Chip! Yes I'm moving to Losmandy to continue imaging - came from Skywatcher type mounts, an Orion Sirius and an EQ6-R Pro. I've tuned both of them myself and got used to reduce backlash as