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Re: [ATM] Crayford Focuser

----- Original Message ----- 
From: James Crombie 
To: Don Ware 
Cc: ATM List 
Sent: Monday, February 11, 2008 6:18 PM
Subject: Re: [ATM] Crayford Focuser

   The problem with shoulder bolts is the minimum size is 1/4", and they 
are several thou smaller than the bearings ID. So that can allow some 
slop in the assemble. Also a bearing with a 1/4" id will have an OD of 
5/8", getting a little large for a focuser
<<<<<

The bearings I used were 1/8" id 3/8" od.  Shoulder bolts were a few thou under 1/8".  Theaded 4-40.
Available from Allied Devices.

Don Ware
http://webpages.charter.net/dware1/
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