[pianotech] Yamaha Upright String Breaker

[David Love]

This pianos is well out of warranty but that was nice of them.  I'll inquire
though.  

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of James Grebe
Sent: Saturday, January 08, 2011 12:31 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Yamaha Upright String Breaker

Years ago, Yamaha paid me to restring a P-22 because of string breakage. 
They supplied me with a full set of new wound strings, sized differently and

that ended the problem.  Schaff can do the same.
James
James Grebe Est. 1962
Piano Tuner-Technician
Creator of Custom Caster Cups
Creator of Fine Writing Instruments
Piano benches
Theatre and Theatre Organ Historian
www.grebepiano.com
1526 Raspberry Lane
Arnold, MO 63010
(314) 608-4137

----- Original Message ----- 
From: "David Love" <davidlovepianos at comcast.net>
To: <pianotech at ptg.org>
Sent: Saturday, January 08, 2011 1:04 PM
Subject: [pianotech] Yamaha Upright String Breaker


> I've got a Yamaha studio upright that continues to break strings at D3
> (wrapped bichord).  The speaking length is 890mm, the core wire 14 gauge 
> and
> the outside wrapped dimension is .058".  My spread sheet shows that at 69%
> BP but my own formula might be low.  Any string makers care to input here?
> It seems to me it's got to be too high.
>
> David Love
> www.davidlovepianos.com
>
>
>