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Re: G-11G with a stiff RA axis

 

Hi Chip,

I do not have any pictures of the upper clutch surface, unfortunately. I would have to take my mount apart (which I will have to do to fix this problem, I suppose).

Glenn
File - Guidance on Posting Documents and Pictures.doc

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File : Guidance on Posting Documents and Pictures.doc
Description : A few rules and comments to prevent anarchy in the files and photos section
Re: G-11G with a stiff RA axis

 

The upper clutch surface is flat, no groove.

Hey Glenn I noticed in your picture that your Oldham coupler is way out of alignment. ?Mine were too when I bought mine new (G11G) in October.

I align them by taking off the aluminum spur gear.
Then loosen the two set screws on the outside coupler half and slide the drive shaft out of the way.
Remove the outside coupler half and plastic coupler.
Reinstall the drive shaft and slip the coupler half back on.
Push the drive shaft so the two couplers are touching each other.
The hard part is getting the gear box plate adjusted so both couplers are in perfect alignment.
Check alignment feeling with your finger, then turn 90 degrees and check again.

I had to drill my plates out so I could get enough play to get them in perfect alignment.

-Rich-
Re: Issues with Altitude assembly in older G11

 

Thanks, Brendan. That makes sense. I seem to
recall that the manual didnt mention slackening or tightening these screws.

A Happy New Year and Clear Skies in 2018 to all!

David

At 09:24 31/12/2017, brenatlilydale@... [Losmandy_users] wrote:


Hi David....if you have the 2 bolts each
side. Usually you can leave the pivot bolt a
little loose...not much just a little and undo
the upper tangent bolt a little to make altitude
adjustments, nip it back up when done.

From experience, leaving the lower bolt a
little loose is ok but nipping the upper bolt
when altitude adjustments are done always
throws out the mount out a little in
"Alt". You get a feel for how much it moves
when tightening and allow for it. Also no need to over tighten.

It ius also thrown out in "Alt" depending on
which side bolt you tighten first. One side
thrusts it one way the other the opposite. Its
just adding a little twist to the mount to throw
out all your precise adjustments!

Grrrr

Brendan
Re: G-11G with a stiff RA axis

 

yes Glenn, that looks like it from what I remember.?
Re: G-11G with a stiff RA axis

 

Hi Glenn,

So is there a matching groove in the upper clutch surface? Any photos of your clutch disc on the upper clutch surface???

Chip
Re: Issues with Altitude assembly in older G11

 

Hi Paul,

I thought the OP was asking about his altitude adjustment moving around. What's the toe saver have to do with anything??

Chip
Re: Issues with Altitude assembly in older G11

 

Hi David....if you have the 2 bolts each side.? Usually you can leave the pivot bolt a little loose...not much just a little and undo the upper tangent bolt a little to make altitude adjustments, nip it back up when done.

From experience, leaving the lower bolt a little loose is ok but nipping the upper bolt when altitude adjustments are done always throws out the mount out a little in "Alt".? You get a feel for how much it moves when tightening and allow for it.? Also no need to over tighten.

It ius also thrown out in "Alt" depending on which side bolt you tighten first.?? One side thrusts it one way the other the opposite.? Its just adding a little twist to the mount to throw out all your precise adjustments!

Grrrr

Brendan
Re: Issues with Altitude assembly in older G11

 

At 21:00 30-12-17, brenatlilydale@... [Losmandy_users] wrote:

On later mounts a altitude lock bolt was added. Does you mount have this?
My G-11 has two bolts on each side. Do I need to loosen all four before adjusting the altitude, or just the two that run in slots?

David
Re: Issues with Altitude assembly in older G11

 

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I think you mean the dec shaft.?
But yes, the counterweight slipping off while it¡¯s being adjusted could hurt someone, and/or damage the ¡®scope when it slams against the mount about 1/2 second after the counterweight departs.?

??-Les


On Dec 30, 2017, at 8:58 PM, Paul Homer phomer60@... [Losmandy_users] <Losmandy_users@...> wrote:

Chip,

Anyone doing what is shown in the image is taking a risk.

The washer at the end of the R.A. shaft prevents the counterweight accidentally sliding off the shaft.

In the event it did, it could seriously injure someone.

Regards

Paul

On 31 Dec 2017, at 1:46:49 pm, chiplouie@... [Losmandy_users] <Losmandy_users@...> wrote:

Paul,


What are your saying? What's dangerous about the images??

Chip
Re: G-11G with a stiff RA axis

 

Greg,

Thanks for trying. Fortunately, I remembered that I took a lot of photos when I last had my mount apart. Is this the groove you are talking about? I do not have a photo of the other half of the clutch, nor do I remember if there was a washer stuck on it, but I am pretty sure the empty groove here indicates that there is no washer.?



Glenn
Re: Issues with Altitude assembly in older G11

 

¿ªÔÆÌåÓý

Chip,

Anyone doing what is shown in the image is taking a risk.

The washer at the end of the R.A. shaft prevents the counterweight accidentally sliding off the shaft.

In the event it did, it could seriously injure someone.

Regards

Paul

On 31 Dec 2017, at 1:46:49 pm, chiplouie@... [Losmandy_users] <Losmandy_users@...> wrote:

Paul,


What are your saying? What's dangerous about the images??

Chip
Re: G-11G with a stiff RA axis

 

Not having much luck finding an exploded view of the RA. But Glenn, when you separate the axis, the part that stays on the mount, not the part you have in your hand that you took off, you will see a groove around the center where the washer would go. There is a groove on mine. Scott sent me the washer. My mount is also brand new from the factory, maybe that makes a difference IDK. But the groove is easy to see as soon as you take the ra apart if your mount has it. I'll keep looking for a shot of it online.

Greg S.
Re: G-11G with a stiff RA axis

 

Glenn, let me see if I can find a picture online. Otherwise I would have to take mine apart to show you.?


Greg S.
Re: G-11G with a stiff RA axis

 

Greg S, if you get a chance, would you mind posting a picture of the wavy washer and where exactly it sits in the RA axis?

I called Losmandy a couple of times this week but got no answer. Maybe they are still on holiday.

Thank you all for your help with this matter.

Glenn
Re: Issues with Altitude assembly in older G11

 

I think Paul has noticed this:?

... the astromart ad picture of the CG11 shows the Elevation axis bolt with no flat washer under its bolt head.? It would be important to have that in place, to keep the brass center rod from slipping out the black side plate.?

The more modern system shows the center axis bolt, and the bolt through the slot, both bolts have flat washers under their caps.

I think the bolt through the slot not only locks thevelevation, but also acts to prevent side to side movement of the upper portion of the mount, though I've not experienced any trouble. ..front to back, or side to side...with my own CG11.??

Best,
Michael?



On Dec 30, 2017 7:47 PM, "chiplouie@... [Losmandy_users]" <Losmandy_users@...> wrote:
?

Paul,


What are your saying? What's dangerous about the images??

Chip
Re: Issues with Altitude assembly in older G11

 

Paul,

What are your saying? What's dangerous about the images??

Chip
Re: Issues with Altitude assembly in older G11

 

¿ªÔÆÌåÓý

A very dangerous situation - the RA shaft washer is missing.

Paul
Re: Issues with Altitude assembly in older G11

 

Yeah those are the links...thanks Bryan...no idea why they disappeared on my post.? Many thanks for fixing.

Brendan
Re: Issues with Altitude assembly in older G11

[email protected]
 

Try these

Bryan
23741 - 23760 of 83611