tuning instability on new Baldwin SD10

[Tom Servinsky]

Also check to see if the string is cutting a gouge into the becket side. If 
this is the culprit, the dead give-a-way sign is that it will continues to 
fall  far in pitch within a few minutes of being tuned. Eventually the 
string will  weaken and snap. Replace the tuning pin and cut the becket 
portion of the string, straighten the existing coil  and create a new coil.
Tom Servinsky
----- Original Message ----- 
From: "Conrad Hoffsommer" <hoffsoco at luther.edu>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Thursday, December 27, 2007 9:43 AM
Subject: Re: tuning instability on new Baldwin SD10


> Paul Mulik wrote:
>> Hello list,
>>  One month ago my church bought a new Baldwin SD10.  I installed a DC the 
>> day after it was delivered (2 tanks, 3 rods), tuned it a few days later, 
>> and tuned it again a couple of weeks after that. I'm having trouble with 
>> a few of the unisons in the fifth octave, there are 3 or 4 strings that 
>> just will not stay in tune.  I keep retuning them and they sound fine for 
>> a while,  but then a few days later they'll be 20 cents flat.  The tuning 
>> pins do not feel loose, and I've tuned other large grands with no 
>> difficulties, so I don't think the problem lies in my tuning technique 
>> (though I could be wrong -- wouldn't be the first time!)  I have not 
>> tried driving the pins further into the pinblock; it seems to me this 
>> shouldn't be necessary on a new piano, but again, I could be wrong.
>>  Any suggestions?
>>  Paul Mulik
>> Joplin, MO
>
>
> Have you checked to see that the beckets aren't pulling out?
>
> -- 
> Conrad Hoffsommer - Keyboard Technician
> Luther College, 700 College Dr., Decorah, Iowa 52101-1045
> 1-(563)-387-1204 // Fax 1-(563)-387-1076
>