Bzzzing Dampers

[jolly roger]

Hi Stacy,
               A tip to help to trim "oinking" dampers.  Take a sharp
pencil and lightly trace a line on the protruding damper tips using the
under side of the string as a guide. Remove dampers.
Use a very sharp pair of surgical grade scissors to trim off excess using
the pencil line as your guide.
Every day common scissors will not cut it.  Pun fully intended.
For good quality half pedaling results, it is important to remove those
long tips. If you want some coaching come a day early for the Stan Kroeker
hammer hanging seminar.
Gentleman's mustache triming scissors are also repoted to be very good for
this job, but I have never tried them. Practice on some spare felt first.
Regards Roger


At 12:04 PM 1/18/01 -0700, you wrote:
>
>
>Kevin,
>
>Thanks for the ideas, I especially like your remedy for "oinking" dampers.  
>My own piano does this (it's old and crusty), now I have something else to 
>try.
>
>Thanks again,
>
>Stacy.
>>
>>     Buzzing Dampers......... Usually caused by the felt hanging down 
>>between
>>the strings too far. You really have to trim them. First, you make a cut so
>>that the material hanging below the strings is no longer there, then you
>>make two more cuts on each half of the trichord, so that the damper ends 
>>are
>>radiused. Then you might have to do some minor fitting. That's about it.
>>Really nothing to be afraid of, just do it very carefully.
>>     I also have glued a piece of 120 grit aluminum oxide sandpaper to the
>>back of my little machinists' ruler. I use that on dampers to get rid of
>>that crustiness that can make dampers "oink". Also, make sure that the
>>bushing in the damper guide rail is not too loose. It's supposed to be 
>>tight
>>enough to prevent the damper from rattling around as it seats.
>>     Hope this helps.
>>
>>
>>----- Original Message -----
>>From: "Stacy Adams" <adams_piano@hotmail.com>
>>To: <pianotech@ptg.org>
>>Sent: Wednesday, January 17, 2001 8:36 PM
>>Subject: Bzzzing Dampers
>>
>>
>> >
>> > List,
>> >
>> > I tune a Yamaha G1 (1963) for a local piano teacher who has been
>>complaining
>> > of a buzzing key (D4).  It seems that the buzzing is being produced by 
>>the
>> > damper, a trichord wedge, as the felt settles between the vibrating
>>strings.
>> >   The damper appears to be aligned to the strings and the dampers 
>>overall
>> > are in decent regulation.  There are several other trichord dampers that
>> > buzz in this manner, but to a lesser degree.
>> >
>> > Is it a possibility that the problem stems from the consistency of the
>>aging
>> > damper felt?  Could the design of the piano (trichord wedges to F4) also
>>be
>> > a contributing factor?
>> >
>> > Any ideas to cure this annoying bzzzzz would be much appreciated!
>> >
>> > Many thanks,
>> >
>> > Stacy Adams
>> > PTG Associate
>> >
>> >
>> > 
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