new Baldwin Pin Torque, was PianoTechList Comments

[Joe & Penny Goss]

Ron,
Did Stacey say if the torque became tighter or looser?
Joe Goss
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message -----
From: "Ron Nossaman" <RNossaman@KSCABLE.com>
To: <pianotech@ptg.org>
Sent: Thursday, August 02, 2001 9:21 AM
Subject: Re: new Baldwin Pin Torque, was PianoTechList Comments


> >Stacy Yoak, from the Baldwin factory, was at Reno to teach a class on
> >re-stringing an accu-just system.  During the class, he described some
> >changes recently introduced in production methods to control pin torque.
> >The first pin holes drilled in each block are test holes, in an unused
> >section of the block.  Pins are installed in the test holes, torque
measured
> >and evaluated.   Drill RPM and feed rate are adjusted, or perhaps the
drill
> >bit is replaced, to bring the torque within tolerance.  Only then are the
> >"real" tuning pin holes drilled.
>
> I talked to him a bit in the rebuilding skills class (after I showed him
my
> dumb little agraffe installation aid), and he said that drilling a block
> out of the piano and then screwing it to the plate will change the pin
> torques as the block conforms to the plate. I haven't tested this, and he
> was referring specifically to ultra dense blocks, but I thought it was
> interesting.
>
>
> Ron N