Re: [ATM] How to Reduce Bearing Friction

[Mark Holm <mdholm@telerama.com>]

Nils Olof Carlin wrote:

> But it demonstrates the complexity of the matter - the 
> real-life friction of Teflon against laminate just isn't well described by 
> the common, simplified model of a constant friction coefficient.

Check out

Better Dobsonian Bearings
Martin Lewis; Sky & Telescope (Archives); Oct 2003; 122

for an investigation of friction vs. velocity for various Dob bearing
materials:  Real experimental data, not just textbook theory.

or

http://pqasb.pqarchiver.com/skyandtelescope/access/886745961.html?dids=886745961:886745961&FMT=PAGE&FMTS=CITE:PAGE&date=Oct+2003&author=Martin+Lewis&desc=Better+Dobsonian+Bearings

if you are willing to pay S&T a few bucks instead of having to rummage
through your piles of magazines to find that issue.

Mark Holm
mdholm@telerama.com

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