Yamaha damper question

[Roger Jolly]

Hi Clyde,
           Yamaha has definitely corrected their problems, but I still seen
it on newer Korean products.  I think most of the better supply houses are
using German Silver pins.

I have never recieved a satisfactory answer, re plating and pitting, as to
weather the pins were at fault, or a chemical reaction to some thing in the
bushing cloth.  Your guess is as good as mine.

Roger



At 09:01 PM 5/3/02 -0400, you wrote:
>Friends,
>
>I still have two unanswered questions on this matter.  Are plated center
>pins used in any new pianos?  Do I run the chance of buying plated center
>pins from the parts people?
>
>Thanks,
>Clyde
>
>Clyde Hollinger wrote:
>
>> Friends,
>>
>> Earlier this week I received a complaint that a key was sticking on a
>> 1976 Yamaha G2 grand piano.  When I arrived I diagnosed the problem as
>> the D#4 damper not returning to rest on the strings after the note was
>> played.  I replaced the center pin holding the damper lever to the
>> damper lever wire flange and all was fine.  The same thing had happened
>> to the neighboring D4 damper three years ago.
>>
>> The removed pin looked discolored where it rotated in the felt bushing,
>> so I decided to check it out under a microscope and see if I could learn
>> something.  Some friends have a cheap one, but it served to show me that
>> the center pin appeared to be deeply scratched around the pin.
>>
>> Now to my questions:  Is this a case of flaking plating that I heard
>> about?  If not, what is likely the problem?  Are the center pins I buy
>> from Schaff plated as well?  Will this become a chronic problem for this
>> particular piano?  If so, is there any preventive measure I can take
>> without replacing that center pin in every damper?
>>
>> Thanks,
>> Clyde Hollinger, RPT
>
>
Roger Jolly
Balwin Yamaha Piano Centres.
Saskatoon/Regina.
Canada.