Re: [ATM] Question About Dobsonian Design

["Mel Bartels" <mbartels@bbastrodesigns.com>]

> Idea -- why not use ball bearings, and develop clutches for the Dob 
> Driver, and adjustable sources for additional friction as needed.  When 
> the scope is being driven by the motors, only the ball bearings would be 
> in use.  However, when the Dob Driver was not at work

This idea is popular.  You might start with

http://www.bbastrodesigns.com/cot/cot.html#LINKS

and

http://www.bbastrodesigns.com/cot/mechanic.html

Mel Bartels 

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