[CAUT] pin block strangeness

[Greg Newell]

David,
         I believe that we are in agreement. I do see your point, however, 
about the possible change from a rocking block (not a rocking plate, right?).

Greg Newell



At 12:08 AM 3/15/2005, you wrote:
>As I said, I don't think that the bad fit is causing the instability
>assuming there are plate bushings.  But I suppose if the plate were
>rocking, and the treble were tuned first, then pulling the bass tension
>up might cause the block to rotate toward the bass side and increase the
>tension on the treble.  Idle speculation though.
>
>David Love
>davidlovepianos@comcast.net
>
>-----Original Message-----
>From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
>Greg Newell
>Sent: Monday, March 14, 2005 8:52 PM
>To: College and University Technicians
>Subject: RE: [CAUT] pin block strangeness
>
>
>David,
>          How could this possibly make a difference? Didn't the original
>post say that the piano was found to be SHARP? How could the pin block /
>
>plate flange fit cause the piano to go sharp? I'm not even sure that I
>would agree to it being possible for it to go flat but definitely not
>sharp!
>
>Greg Newell
>
>At 10:42 AM 3/14/2005, you wrote:
> >If the piano has tuning pin bushings it probably doesn't matter about
> >the flange fit unless the plate is rocking.  If you want to secure it
> >without turning the piano upside down and pouring epoxy in, you can cut
> >a bunch of thin wedges out of scrap pinblock material or maple or
> >anything hard really.  Try and cut them with only the slightest taper
> >and with the thinner edge just slightly under the gap size.  You want
>to
> >be able to insert them as far as possible but have the most contact top
> >to bottom that you can.  Put glue on the pinblock side and insert them
> >along the flange line.  Tap them in place with a mallet.  Don't forget
> >to cover the keybed with newspapaper.  Wipe off the excess, wait 20
> >minutes and trim them with a flexible Japanese pull saw.  Then try the
> >tuning again and see if it makes a difference.
> >
> >David Love
> >davidlovepianos@comcast.net
> >
> >-----Original Message-----
> >From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
> >Christopher Purdy
> >Sent: Monday, March 14, 2005 7:01 AM
> >To: College and University Technicians
> >Subject: [CAUT] pin block strangeness
> >
> >I ran into a new one the other day.  A local dealer has pianos made for
> >them by Dong Bei in China.  I was asked to make a service call on a
> >small grand that was sold to a church.  This was my first encounter
> >with one of these pianos.  The local tuner was having trouble with
> >tuning stability and they asked me to have a go at it.
> >
> >Overall, it looked fairly well built and pin torque was very
> >consistent.  String rendering had a mushy feel to it but I was able to
> >set pins.  It seemed stable while I tuned and sounded like a million
> >bucks when I was finished.  The other tuner had told the dealer that
> >the piano was going out of tune even while he was working on it so I
> >was very meticulous with my tuning and was looking everywhere for an
> >answer.
> >
> >Then I found something that blew me away.  I checked the pin block fit
> >and found that the block does not even touch the flange, at any point.
> >Not only could I put a business card in the gap, bass to treble, but
> >there was a huge gap.  I could have put the thickness of three or four
> >cards in it with no problem.
> >
> >The previous tuner had just tuned the piano eight days before and when
> >I got there the treble was a good 25 cents sharp.  I do not know this
> >tuner so I can't speculate about his experience. I asked a ton of
> >questions about humidity and temperature fluctuations and I gather that
> >it has been pretty stable.  They do not turn off the heat during the
> >week, etc.   I am going back this week to check my tuning.  I can't
> >imagine it's going to be stable with no attempt whatsoever at pin block
> >fitting.
> >
> >Have any of you seen anything like this?  I know there is a lot of
> >griping about the pianos coming out of China but the rest of the piano
> >really looked fairly well made.  The piano is named Steinhauer and is
> >made exclusively for this dealer.  I would be very interested in
> >hearing any experiences you may have had like this.  If I go back there
> >and my tuning is FUBAR I am going to have to condemn this bird.  I have
> >a good relationship with this dealer but I smell trouble.
> >
> >Mitch, have you dealt with any of these yet?
> >
> >Chris
> >_______________________________________________
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> >
> >
> >_______________________________________________
> >caut list info: https://www.moypiano.com/resources/#archives
>
>Greg Newell
>Greg's piano Forté
>mailto:gnewell@ameritech.net
>
>
>_______________________________________________
>caut list info: https://www.moypiano.com/resources/#archives
>
>
>_______________________________________________
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Greg Newell
Greg's piano Forté
mailto:gnewell@ameritech.net