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Old 05-06-2008, 01:19 PM
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White Rabbit
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Bob's Knobs and springs for the 12" LB

Hi guys.

I have all the bits and bobs from bobs knobs (say that 3 times when your drunk, heh) I have them installed but I don’t know where the springs are to replace the. I know they are under the primary but is it a big deal to change them over. I guess I should get these done before I collimate or I’ll have to re-collimate.


Thanks
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  #2  
Old 05-06-2008, 01:58 PM
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rmcpb (Rob)
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If you losen off your primary screws and look into the primary cell you should be able to see the springs around each primary screw. Just take ONE screw out, pull out the spring, then reverse the procedure with the new spring and screw, then move onto the next spring. DON'T remove all springs at one time or its a real %^^$@# to get it all back together.

You will have to collimate after this procedure that is for sure!!
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Old 05-06-2008, 02:46 PM
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astronut (John)
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Here is the base of my 12"LB before I put the Astronomy Shoppe knobs on it.
This will show you where the springs are mounted.
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Old 05-06-2008, 03:43 PM
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erick (Eric)
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A bit off thread(!), but why does GSO place the fan socket beside the collimation screw? Add Bob's Knobs, and it's annoying plugging the fan in. I'm thinking of moving the socket!
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Old 05-06-2008, 04:33 PM
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goober (Doug)
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Quote:
Originally Posted by erick View Post
A bit off thread(!), but why does GSO place the fan socket beside the collimation screw? Add Bob's Knobs, and it's annoying plugging the fan in. I'm thinking of moving the socket!
Ah, that brings back memories. You're absolutely right - I had to give the knob of Bob a quarter twist to plug the fan in.
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  #6  
Old 05-06-2008, 04:47 PM
§AB
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interesting - my GSO fan socket is nowhere near the collimation knobs.
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Old 05-06-2008, 04:48 PM
§AB
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Quote:
Originally Posted by White Rabbit View Post
Hi guys.

I have all the bits and bobs from bobs knobs (say that 3 times when your drunk, heh)
I just did that.....and failed on the first try

Last edited by §AB; 05-06-2008 at 04:59 PM.
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Old 05-06-2008, 05:13 PM
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erick (Eric)
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Quote:
Originally Posted by §AB View Post
interesting - my GSO fan socket is nowhere near the collimation knobs.
Hmmm. It might just be on the 12". I cannot recall a problem on my 8", but it has the original GSO collimating screws - which work fine, don't need Bob's help there.
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  #9  
Old 05-06-2008, 05:17 PM
§AB
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I have bob's nobs installed on my scope, but the fan socket is positioned halfway between the collimation knob and the mirror lock knob. I have no problems accessing it at all.


quite intriguing, so the 8 and 10" models have the socket positioned nicely away from the knobs, but the 12" has it bunged up right next to the collimation knob?
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  #10  
Old 05-06-2008, 06:41 PM
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Thanks guys, I'm about to give it a go.
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  #11  
Old 16-06-2008, 09:00 AM
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bindibadgi
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Do the LB knobs fit on GSO scopes? I'm a bit confused here. :-/
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  #12  
Old 16-06-2008, 06:06 PM
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Dave47tuc (David)
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Yes I had a GSO 10" now Sab's I used Bobs knobs for a LB10" to suit. All fitted straight on. Hope that helps.


Quote:
Originally Posted by bindibadgi View Post
Do the LB knobs fit on GSO scopes? I'm a bit confused here. :-/
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  #13  
Old 16-06-2008, 08:52 PM
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Thanks Dave. Awesome.
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  #14  
Old 19-06-2008, 05:00 PM
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Wouldn';t the larger Bobs knobs foul up on the Argo Navis gismo that is mounted on the top of the white floor? (the one with the toothed belt) With my 12" LB with original supply springs and screws, doesn't seem to be too much clearance there. I have never had trouble with it going out of collimation - apart from one journey over gravel roads - then the whole lot fell out
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