new Baldwin Pin Torque, was PianoTechList Comments

[Paul]

Ron
The shop I worked in during my formidable years always had the block in the
piano, the bearing set, and the pinblock anchored to the plate. Drilling was
the last step, just before stringing. They didn't want any pinblock movement
of any kind when it was drilled. They never really explained why. But the
flexing block and hole change makes some sense to me.

Paul Chick
----- Original Message -----
From: Ron Nossaman <RNossaman@KSCABLE.com>
To: <pianotech@ptg.org>
Sent: Thursday, August 02, 2001 2:08 PM
Subject: Re: new Baldwin Pin Torque, was PianoTechList Comments


> >Hmmmm...
> >
> >Interesting word pictures happening here.
> >
> >Is it possible for perfect cylinder (as in the
> >ideal tuning pin hole) to become larger as it
> >deforms?
>
> That would be when the plank is sprung up in the middle to meet the plate.
> Holes get bigger (tension) on top where the pins are, and smaller
> (compression) at the bottom, where pins ain't.
>
>
> >My little brain keeps saying "smaller", "tighter
> >fit".
>
> That would be when the plank is sprung down in the middle to meet the
> plate. Holes get smaller (compression) on top, where the pins are, and
> larger (tension) at the bottom, where pins ain't.
>
>
>
> >Perhaps my imagination is working in fantasyland
> >again!  :-)
> >
> >Brian
>
> Maybe Stacy's too, but it is an interesting idea and he says it's
> noticeable in torque readings - at least in dense Baldwin blocks.
>
>
> Ron N
>