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Replacement part?

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#1 MHamburg

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Posted 17 October 2012 - 05:04 PM

I need to replace the counter weight bar retaining nut (a big knobby thing) on my CGEM. Celestron has informed me they do not include this in their spare parts inventory. Does anyone know of an after-market source for this item? Thanks.
Michael :question:

#2 RTLR 12

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Posted 17 October 2012 - 07:05 PM

I'll answer you here too. Do you know what size 'Toe Saver' nut you had? Celestron made them in 3 sizes.

Stan

#3 wolfman_4_ever

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Posted 17 October 2012 - 07:33 PM

The bar and Toe Saver is $25 on celestron's part site..

Or use a bolt from home depot..

#4 Stew57

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Posted 17 October 2012 - 10:09 PM

Ts it the toe saver you need or the big knobby thing that screws into the mount? Spare parts are one reason I am looking elsewhere when I upgrade.

#5 orlyandico

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Posted 17 October 2012 - 11:49 PM

no he's talking about the large lumpy thing at the top of the CW bar that looks like a cone. It's at the top of the CW bar and often gets overtightened causing DEC binding :D

I think a replacement would need to be machined. Or if he could find a large nut that will screw in, he could "build up" something by laying epoxy steel over the large nut.

#6 MHamburg

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Posted 18 October 2012 - 09:49 AM

To clarify, it is the large knobby thing that tightens the bar to the dec housing, not the toe saver. (That would be too easy!) It seems a no-brainer for Celestron to make that available as a replacement part.
Michael

#7 Midnight Dan

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Posted 18 October 2012 - 09:57 AM

Not sure if one of these parts is what you need:
http://www.admaccess...aneous_CGEM.htm

... but if not, contact Anthony at ADM and he may be able to make one up for you at a reasonable price. He obviously makes replacement parts for the CGEM so he should be able to duplicate your part without too much effort.

-Dan

#8 orlyandico

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Posted 18 October 2012 - 10:18 AM

can't imagine what could possibly destroy that knobby thing..!

#9 WillCarney

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Posted 18 October 2012 - 02:56 PM

can't imagine what could possibly destroy that knobby thing..!


I recently had to replace my RA locking knob on my Atlas. The Orion service rep said they should not break unless dropped. I keep my mount in a case with foam and never dropped the head. The knob still broke. Upon looking at it closely the knob appeared to be cast metal. I have had my Atlas on cold nights and cast metal does not do to well over time when exposed to some cold weather. I ordered two and have a spare for the "next" time.
William

#10 MHamburg

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Posted 19 October 2012 - 04:02 PM

Anthony makes every knob replacement but the one I need. If you look at the illustration of the counter weight bar, it is the knurled thing at the top of the bar, right against the CGEM housing. On mine, this nut which retains the bar, froze solid so I couldn't remove the bar to begin hypertuning. With the help of a machinist friend, we were able to remove it (scarring the knob with a 36" pipe wrench) while also snapping off the threaded end of the counter weight bar. I now am awaiting a replacement bar from the big C and am forced to clean up the scarred retaining nut. And I haven't even begun the hypertune. So much for DIY.
Michael :foreheadslap:

#11 TxStars

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Posted 19 October 2012 - 07:43 PM

Ask your machinist friend to make one for you.

#12 Geo.

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Posted 20 October 2012 - 11:25 AM

Get a 3/4" washer and a 16 mm course nut (think it's 16 by 2TPmm) at Home Depot or Lowes. You lose them you're only out a few bucks.

#13 MHamburg

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Posted 21 October 2012 - 07:58 PM

My machinist friend is giving the old one a face-lift.
Michael






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