[CAUT] existing pinblock prep

[Jim Busby]

Fred,

According to someone, somewhere... Yamaha factory technicians tout the method of screwing in pins rather than driving them in, for their upper range grands, supposedly again, at a slow rate so as to not heat them up.  I can't remember the source of this, but it just seemed germane to the topic and supports what you said.

Jim Busby BYU

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Fred Sturm
Sent: Thursday, July 24, 2008 11:39 AM
To: College and University Technicians
Subject: Re: [CAUT] existing pinblock prep

On Jul 24, 2008, at 10:42 AM, David Brown wrote:


Re gun brushing- Sometimes when going from # 2 to # 3 pins in a piano where the torque levels are adequate ( 90 - 120 inch lbs , say ) the # 3's can end up a little tight

            My own attitude in this situation is why change pins? I do most of my restringing at the university using the same pins (removing old strings from them, and attaching new strings to them, same techniques as replacing an individual string, but mass produced). I only change to a new, larger sized pin when torque has become an issue for tuning stability. Reusing existing pins requires a different technique for restringing, but I find that, all things considered, it is probably a bit faster than changing pins.
            Just another perspective. It does prolong the useful life of the pinblock as well.

Regards,
Fred Sturm
University of New Mexico
fssturm at unm.edu<mailto:fssturm at unm.edu>


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