new piano pin replacement

[Brian Trout]

Hi Clyde,

You bring up a good point.  Not only can hole size and quality be different
from hole to hole, but if we all got out our micrometers and a set of the
cheapest tuning pins money could buy, we'd probably all be shocked to find
out how much variation there would be from pin diameter to pin diameter.
>From what I've measured for myself, I've seen variations of up to .002"
between tuning pins. (some may be much worse.?)  It doesn't sound like much,
but it can make a difference. Especially if a .002" small pin is placed in a
.002" large hole (a slight wobble of the bit?.

Good point.  It's easy to consider a tuning pin of a particular size as a
constant, when indeed it may not be.  Variables, variables.  They're almost
endless.  :-)  But that helps keep this thing interesting, huh?

Good to see you again, Clyde.

Brian Trout
Quarryville, Pa.

-----Original Message-----
From: Clyde Hollinger <cedel@redrose.net>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: Thursday, June 24, 1999 7:49 AM
Subject: Re: new piano pin replacement


>Roger and Glenn,
>If the block is solid, is the problem with the torque caused by uneven
>hole size or by differing pin diameters?  Are the tuning pins ever the
>culprits in situations like this?
>
>Clyde Hollinger
>
>Roger Jolly wrote:
>
>(snip)
>> IF the block is solid, a new piano should be hand reamed with a #3
>> under sized drill bit and repinned to attain even torque.
>(snip)
>
>> At 09:33 PM 23/06/99 -0600, you wrote:
>>
>>      I have a situation and I need some advice.  The small shop I
>>      do work for sells Shuberts.  Well, partially from my
>>      pleading, he decided not to order any more.  It seems he is
>>      stuck with the ones he has.  One in particular, and I talked
>>      about this one here a long time ago, will not hold tune.  I
>>      recommended he return it to the factory or distributor.  Of
>>      course he got a difficult time and it is still here.  The
>>      distributor (or factory rep, whatever) told him to get an
>>      estimate from "me" for repinning it.  I really don't want to
>>      get involved.  The pin torque varies wildly (I don't have a
>>      gauge - just feel) and the angle of the pins changes
>>      dramatically.  IF the pinblock is not split anywhere I feel
>>      it needs reaming before repinning or else I feel the problem
>>      will just exist again, only a little tighter.  I've never
>>      done this before.  I've restrung two grands and neither
>>      involved reaming.  I don't know how well I can do replacing
>>      strings with "old" coils on them.  I've never done a
>>      vertical.
>>
>>      I told him, after the second tuning, that I never wanted to
>>      see that piano again.  Now he wants me to repin a brand new
>>      piano.  I was taken back when he and the distributor wanted
>>      me to dope it.  Now I think if I do anything I would just
>>      rather hit the loose pins with CA and the heck with it.  I
>>      feel like an angry bee is chasing me!
>>
>>      Any advice here?  Feel free to throw out estimates numbers
>>      (in private emails if that upsets the board).
>>
>>      Thanks,
>>
>>      Glenn.
>>
>> Roger Jolly
>> Baldwin Yamaha Piano Centre
>> Saskatoon and Regina
>> Saskatchewan, Canada.
>> 306-665-0213
>> Fax 652-0505
>
>