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Last Bob's Knob screw does not tighten


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#1 tchemaly

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Posted 23 September 2015 - 09:15 AM

I just tried to install Bob's knobs on my Meade 10" LX200 GPS by removing the old and replacing it with a bob's knob (one by one). When I removed the last screw and fitted Bob's knob it failed to tighten. It just spins loosely in the hole. I removed it and tried screwing in the old screw but now that too is loose!??

 

What did I do wrong? The other two are fine and sitting tight.

 

Thanks

Tim


Kind regards

Tim


#2 meademods

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Posted 23 September 2015 - 10:28 AM

Tim,

I am a Member of ( HAL ) Howard County Astronomical league. I'm the clubs GOTO guy for telescope repairs and upgrades.

I'm also on Cloudy nights (meademods) I sell clutch upgrades and other parts for the Meade LX200 GPS telescopes.  

When changing to Bob's Knobs you remove one screw and replace one and so on (As you already know) If one screw appears to be loose and not tightening

you may need to loosen the other two and try again. The secondary mirror has (3) three springs behind it, that allows the mirror the be adjusted and possibly

one is slightly off center from the hole. Iv seen this happen before and you may need to push down on the mirror (the side the screw is not catching) and see if it will

thread in properly. Also most people do not know (As Meade will not disclose this information) But the Secondary Mirror "can be removed"  

You will notice a small black powered set screw on the side of the secondary housing, Removing this screw will allow the secondary to be removed. (Very handy for cleaning the secondary)

Just make a note the mark the top collimation screw in relation with the top screw on the corrector plate.

Not you can safely perform the necessary adjustment's to get the last collimation screw in place.

 

Hope this helps.

Meademods


  • Mark Sibole and RickScofield like this

Howard County Astronomical League  

Telescope repairs and Upgrades

Meade LX200 GPS 10" F10

Meade Series 5000 80MM APO triplet F6

Meade Model 320 80MM F11

Cloudy Nights

 

 

Meademods


#3 tchemaly

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Posted 23 September 2015 - 11:18 AM

Thanks. I slightly loosed the other 2 screws, wiggled it and finally got the third screw in :)

Wish they made those screws longer.


Kind regards

Tim


#4 meademods

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Posted 23 September 2015 - 11:48 AM

Than I  am a Jedi night :)

thank you OB1 I mean Tim 


Howard County Astronomical League  

Telescope repairs and Upgrades

Meade LX200 GPS 10" F10

Meade Series 5000 80MM APO triplet F6

Meade Model 320 80MM F11

Cloudy Nights

 

 

Meademods


#5 meademods

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Posted 23 September 2015 - 11:50 AM

did you use bob's knob's or back to factory?

Bob's knobs are the greatest!  


Howard County Astronomical League  

Telescope repairs and Upgrades

Meade LX200 GPS 10" F10

Meade Series 5000 80MM APO triplet F6

Meade Model 320 80MM F11

Cloudy Nights

 

 

Meademods





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