Re: RA guiding awful after upgrade
The 12" extension is much more responsible if the issue comes for these add-ons.? Because the 12 inches of extension increases the inertia the pier must dampen much more that the slight increase from
By
WayBack
·
#83614
·
|
Re: RA guiding awful after upgrade
Hey Thomas,
I've just been following the thread silently as I'm at just as much of a loss as anyone else regarding a definitive source, but I did have a thought:
Your very tight clutch technique may
By
Ryan Noonan
·
#83613
·
|
Re: RA guiding awful after upgrade
Thanks Paul.
I decided to remove the RA extension.
We'll see what happens.
Tom
By
Thomas Kallenbach
·
#83612
·
|
Re: RA guiding awful after upgrade
Can't give you a definitive advice, Tom, since none of us know for sure what's going on. If you can test with an non-over tightened clutch, first, and then, if that doesn't help, try removing the RA
By
Paul Kanevsky
·
#83611
·
|
Re: RA guiding awful after upgrade
Hello Everyone,
Tonight might be a clear night so I thought I would set up the scope.? I read in another thread that tightening the clutches excessively could cause jerky movements.? I may have
By
Thomas Kallenbach
·
#83610
·
|
Re: Specs for the main axis thrust bearings.
Tim,
If you are tightening down the clutches because you have slippage, it sounds like you have oily discs as was mentioned. But instead of a wrench you may wish to invest in the Losmandy clutch
By
John Kmetz
·
#83609
·
|
Re: Specs for the main axis thrust bearings.
On Tue, Feb 25, 2025 at 03:41 PM, <tshelley@...> wrote:
>
> Paul: The drive noise is what you'd hear if you touched the pointed end of
> a phillips screwdriver to a portion of the worm gear
By
Chip Louie
·
#83608
·
Edited
|
Re: Specs for the main axis thrust bearings.
Paul: The drive noise is what you'd hear if you touched the pointed end of a phillips screwdriver to a portion of the worm gear housing and the other end to your ear. I use the mounting bolts to avoid
By
tshelley@...
·
#83607
·
|
Re: Specs for the main axis thrust bearings.
Hi Tim,
A couple of link corrections
For whatever reason John,? the part number got clipped off the links for these two.
5905K29??? ??? Needle-Roller Bearing, Open, for 1-1/4" Shaft
By
Michael Ben-Yehuda
·
#83606
·
|
Re: Specs for the main axis thrust bearings.
Tim, drive noises during guiding? What does it sound like?
The guiding behavior looks like backlash, possibly a poorly adjusted spring-loaded worm. Do you have any recent PHD2 guide logs? The ones
By
Paul Kanevsky
·
#83605
·
|
Re: Specs for the main axis thrust bearings.
The mount does not seem to stop. The guiding will correct itself in 2-3 pulses after the 30 second phase and the mount continues to make drive noises. As far as did the mount receive a guide pulse, I
By
tshelley@...
·
#83604
·
|
Re: Specs for the main axis thrust bearings.
Tim,
The rebuild and regrease of the thrust washers and bearings is not that difficult. The hardest part is removing the motor to worm assembly and getting the worm tension right when putting it all
By
John Kmetz
·
#83603
·
Edited
|
Re: Specs for the main axis thrust bearings.
John, thank you for the information. I appreciate it. I will put it to use with caution.
Chip, thank you for all the cautionary statements. I should have provided a more detailed account for why I was
By
tshelley@...
·
#83602
·
|
Re: Specs for the main axis thrust bearings.
Hi Tim,
Following are the part numbers I have given out to folks in the past, but I have not checked the links in quite a while. There are the Losmandy stock parts (not sure why you can't get them)
By
John Kmetz
·
#83601
·
|
Re: Specs for the main axis thrust bearings.
Is there something wrong with your main thrust bearings?? These almost never god bad unless the mount has been misused,.assembled incorrectly , had the wrong lubricant used or the mount has has long
By
Chip Louie
·
#83600
·
Edited
|
Re: Specs for the main axis thrust bearings.
Hi, Chip, Losmandy has not had these for months. Losmandy refuses to respond to requests for information about these parts. Otherwise I'd be happy to be able to get them from Losmandy.
By
tshelley@...
·
#83599
·
|
Re: Specs for the main axis thrust bearings.
Why, do you need replacement thrust bearings?? Why not just call Losmandy and order them, they have the correct factory spec parts in stock sitting on the shelf.? There is a bit more to it than just
By
Chip Louie
·
#83598
·
|
Specs for the main axis thrust bearings.
Does anyone have a handle on the specs or a source for the RA and DEC main thrust bearings? I'm not looking for the smaller thrust bearings used in the clutches.
Thanks in advance, Tim.
By
tshelley@...
·
#83597
·
|
Re: Gemini-1 Failure
Michael Herman is a great friend and resource to the Losmandy community.? I can't imagine the Losmandy world without his contributions.
That said make your life easier , t ake the Gemini and other
By
Chip Louie
·
#83596
·
|
Re: Gemini-1 Failure
sadly I’ve seen this before more than once. ?Sadly I’ve even seen ?corroded CPU sockets. ? The environment must be extremely onerous and or moisture by the buckets.
Luckily Michael repaired
By
Brendan
·
#83595
·
|