Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Hi Eric, You raised an interesting question ...could you operate the axis with the shaft removed? I tried this recently on my GM8. .I was surprised to find the worm would jam in the ring gear with the
By
Michael Herman
·
#73165
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Well here is my N=1 for this exact thing (these photos include before and after Scott re-machined it for me after sending it in, hence the non-anodized surface).
By
Keith <keithdnak@...>
·
#73164
·
Edited
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Has anyone checked the worm-gear mesh when the Dec shaft is removed? Are there still tight spots around the axis with the shaft removed? Or is the mesh equal all around the axis? Eric
By
Cyclone
·
#73163
·
|
Re: Things noticed with my G11G regarding recent topics including shaft wear, bearings, worms and miscellaneous
Hi Robert, Welcome to the forum! I agree with you, some abbreviations are pretty obscure. SLW stands for spring-loaded worm. I¡¯ll see if we can start a community-maintained glossary of terms here.
By
Paul Kanevsky
·
#73162
·
Edited
|
Re: Things noticed with my G11G regarding recent topics including shaft wear, bearings, worms and miscellaneous
R. Hancey here, I am somewhat new to this forum (in terms of commenting), and my problem is I see so many abbrevations like SLW, just what blank is it. Is there a glossary of terms available who yet
By
Robert Hancey
·
#73161
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Thanks for the drawing. Slop between the brass bushing and the worm wheel bearing will only push the wheel into the worm if the shaft is snug in the needle bearings. I would guess that the design
By
Les Niles
·
#73160
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Bod, This I think supports my idea that the down force from tightening the clutch is not uniformly applied lea
By
Peter Boreland
·
#73159
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Very Interesting discussion. I just wanted to share what I think is going on more graphically. The image shows what I believe to a be a bias force that is locked into the ring gear when the clutch is
By
Peter Boreland
·
#73158
·
|
Re: Things noticed with my G11G regarding recent topics including shaft wear, bearings, worms and miscellaneous
Here are the parts I used for retrofit, including Belleville worm block upgrade. Qty listed as needed per axis. Belleville washers come int 10 pack, so only 1 needed for both axis.
By
David Malanick
·
#73157
·
|
Re: Things noticed with my G11G regarding recent topics including shaft wear, bearings, worms and miscellaneous
That's interesting, David. Would you please post the parts numbers for all the bearings you used and the source? I'll probably buy these to have on hand for my next rebuild. Your RA shaft wear looks
By
John Kmetz
·
#73156
·
|
Things noticed with my G11G regarding recent topics including shaft wear, bearings, worms and miscellaneous
Okay so I've got my mount to a pretty good point. I have the SLW and tucked motors. Guiding is between 0.30 and 0.65. After working on my DEC axis and getting it all straightened out I started on my
By
David Malanick
·
#73155
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
The point, that I didn¡¯t say very clearly, is just that there doesn¡¯t seem to be any simple decoding of the serial #s that works for all years. -Les
By
Les Niles
·
#73154
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Les, I agree with your assessment.? In addition, drawing from material science, you must bend the material beyond the yield point before it takes a permanent set.? Before that you are in the elastic
By
Robert Benward
·
#73153
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
I¡¯ve been following this interesting discussion, learned some things about the design of the mount. This afternoon it motivated me to tear my G11 apart ¡ª I¡¯ve had some new clutch discs for a few
By
Les Niles
·
#73152
·
|
Re: Website Problem?
Truncation problem should be resolved now. A system update apparently caused this. Regards, -Paul
By
Paul Kanevsky
·
#73151
·
|
Website Problem?
Just noting that many topics and messages in the forum seem to be duplicating and repeating. And my posts are getting cut short after writing. Somethi
By
John Kmetz
·
#73150
·
|
Re: 76sec error on new OPW-11
Michael, Typically when using PEMPro, we use a hour or less of data to create a PEC curve which is then uploaded to the Gemini unit. Therefore we largely measure the behavior of the worm, and possibly
By
John Kmetz
·
#73148
·
|
Re: Sky Watcher EQ6 R PRO stripdown and rebuild
Yes not relevant but I¡¯m sure we like to keep up with other mounts technically. the reason I don¡¯t go EQ6 pro many years back was: Losmandy machine everything (not pot metal castings); Everything
By
Brendan
·
#73147
·
|
Re: Sky Watcher EQ6 R PRO stripdown and rebuild
None of this is relevant to LOSMANY mounts. -- Chip Louie Chief Daydreamer Imagination Hardware Astropheric Weather Forecast - South Pasadena, CA Astrospheric Signature (
By
Chip Louie
·
#73146
·
|
Re: Relationship between needle bearing wobble and variable worm mesh and backlash
Whoops!? ?One more time. The copy paste worked before, not sure w
By
Robert Benward
·
#73145
·
|