[pianotech] Yamaha Upright String Breaker

[Thomas Cole]

I got the last of their P202 replacement sets several years ago, 
according to Dave Durben. I didn't ask if they had the specs on the 
redesigned bass strings.

Tom Cole

On 1/8/11 1:01 PM, David Love wrote:
> 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
>>
>>
>>
>