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CW shaft diameter

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#1 Doug76

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Posted 02 August 2010 - 11:55 PM

For Vixen GP's, Orion SVP's and Atlas, CGEM & CG-5.

#2 DLB242

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Posted 03 August 2010 - 12:15 AM

For Vixen GP's, Orion SVP's and Atlas, CGEM & CG-5.


Vixen SP/GP 20mm
Celestron CG-5 and CGEM 20mm

#3 vinnie

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Posted 03 August 2010 - 02:44 AM

SVP (EQ5) 20mm

Atlas (EQ6) and Sirius (HEQ5)18mm

(just to add on some more)

#4 vinnie

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Posted 03 August 2010 - 03:40 AM

Not sure why you are asking, Doug, but if its in relation to interchanging CW's all the Synta mount CWs are bored to 20mm. Just the one's intended for the 18mm shaft mounts have a thin plastic sleeve glued in the hole to take them down to 18mm. So if you have an 18mm CW and want to use it on a 20mm shaft you just cut out the sleeve with a sharp knife, and going the other way you take the 20mm down to 18mm by gluing a piece of thin plastic hose inside the hole. Three quarter inch home irrigation pipe (the thin stuff that you can push those little spray head things into)works just fine, just cut a slit in it and glue it in so that the slit corresponds to the locking screw position

#5 Doug76

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Posted 03 August 2010 - 07:30 AM

Yeah Vinnie, looking for smaller (4lb and less) CW's to balance my smaller/lighter scopes on my two mounts. Seems Vixen is the only source of anything smaller than 7lbs.

#6 DLB242

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Posted 03 August 2010 - 10:44 AM

Yeah Vinnie, looking for smaller (4lb and less) CW's to balance my smaller/lighter scopes on my two mounts. Seems Vixen is the only source of anything smaller than 7lbs.


The Celestron CG-4 comes with a 7 lb and 4 lb weight. I recall someone posted they were able to buy the 4 lb weights from Celestron for a reasonable price. Vixen weights are not cheap but SP weight do show up in the classifieds once in a while.

#7 vinnie

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Posted 03 August 2010 - 05:16 PM

OK, I've only ever made my own to get down to small sizes

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