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#1240394 - 07/30/09 02:20 PM highest monocords on P-22
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
I've tuned a fair amount of Yamaha p-22s, but I ran across one yesterday that needed a 40 cent plus pitch raise. When I got to A 1 and started to pull it up, it snapped at the becket. I tried for awhile to tie it, but there was not enough wire to work with, given that it was 21 gauge. A few holes in my fingers later, I continued the pitch raise process, being even more tentative. "Bang" said the next string as I got it near pitch.

I called Mapes this morning to order the strings, and as soon as I said the model number and serial number, he told me what strings I needed to order...I guess I'm not the first one to have this happen. Anyone here have the same experience?
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

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#1240396 - 07/30/09 02:24 PM Re: highest monocords on P-22 [Re: Dave Stahl]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21657
Loc: Oakland
If this is a Known Issue, you might see if Yamaha will cover the cost of it. They are good about that sort of thing.
_________________________
Semipro Tech

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#1240402 - 07/30/09 02:44 PM Re: highest monocords on P-22 [Re: BDB]
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
Unfortunately, the piano is almost 20 years old. Worth a shot, though.
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

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#1240433 - 07/30/09 03:43 PM Re: highest monocords on P-22 [Re: Dave Stahl]
Bill Bremmer RPT Offline
3000 Post Club Member

Registered: 08/21/02
Posts: 3271
Loc: Madison, WI USA
Dave and BDB, it is a well known issue. New specifications were made for those strings. I have had the same experience you had several times, including loss of blood. Those pianos were made long ago, so most of them have been repaired but it is always possible to run across one as you obviously did. If it happens now, I don't even try to splice it although I have been successful at that.

The size of core wire and the winding make the string too close to the breaking point when tuned at standard pitch. The steep angle from the V-bar to the tuning pin is another factor.
_________________________
Bill Bremmer RPT
Madison WI USA
www.billbremmer.com

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#1240502 - 07/30/09 06:27 PM Re: highest monocords on P-22 [Re: Bill Bremmer RPT]
Jerry Groot RPT Offline
6000 Post Club Member

Registered: 11/07/07
Posts: 6828
Loc: Grand Rapids Michigan
Agreed Bill. It is a very well known issue with certain P202's and some P22's. Mostly with P202's though. They have since changed things including the angle from the V bar area to the tuning pins.
_________________________
Jerry Groot RPT
Piano Technicians Guild
Grand Rapids, Michigan
www.grootpiano.com

We love to play BF2.

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#1240503 - 07/30/09 06:27 PM Re: highest monocords on P-22 [Re: Bill Bremmer RPT]
Jeff A. Smith, RPT Offline
Full Member

Registered: 12/01/03
Posts: 476
Loc: Angola, Indiana USA
Back around 1989 or 1990 I had a situation with a P22 made and sold a few years prior, by a dealer I did a lot of work for.

The piano was going through a lot of bass strings, including ones that had already broke once. Even though the piano was being used in a worship setting, with a fairly energetic player, Yamaha offered to replace the bass section with a lower tension set or settle with a one-time cash payment.

The impression I got from the rep I spoke with at Yamaha was that this was a known issue. Something else that was a known issue was blubbering hammers during soft playing, such that unusual let-off specs and the like were recommended.

Other than those things, I think those pianos were pretty nice. I still tune the P22 I mentioned, and it's remarkably stable and projects very well.

Jeff
_________________________
Jeff A. Smith
Registered Piano Technician
Indiana, USA

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#1240523 - 07/30/09 06:52 PM Re: highest monocords on P-22 [Re: Jeff A. Smith, RPT]
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
The warranty is no longer valid, and Yamaha is out of these strings. So I ordered them from Mapes and will charge the customer accordingly.

I just hope the hammer spring retention cords don't start breaking soon...she just bought the piano!
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

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