[Fwd: Re: Aha! was flat facts]

Ron Nossaman rnossaman@cox.net
Mon, 28 Mar 2005 18:35:30 -0600


Oops, brain gas. Correction.

> Somebody with a physics background might be able to define the static and
> dynamic forces involved here, say 125 to 175 lbs. of tension on a rope
> (sting) attached to a pulley (pin) with a counter-torque friction of 35-200
> in. lbs., etc.

A #17 wire on a 2/0 tuning pin at ***160 lbs*** tension torques the 
pin at
a bit over 25 lb/in, and if the pin were held only at the bottom,
would twist it about 1/3°.
Ron N


This PTG archive page provided courtesy of Moy Piano Service, LLC