noisy jacks

[Roger Jolly]

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Hi Jurgen,
                   I will measure both let off buttons and Jack/spoon 
buttons next week and get some range samples for you.
Please send 6 sets B/R punchings and 3 more sets of F/R 
punchings.  Darn those thingee's are good.
Several of the pianos at U of S have been done. Seems like the other 
15 grands will get done over the next 12 months.

Regards Roger.




At 09:42 PM 12/8/2005, you wrote:
>Roger -
>Can you give a diameter and an ideal thickness for that button 
>punching?  I'll see if I can get some made up from that special 
>secret felt that no one is supposed to know about - you know which 
>one I mean.....starts with "W"
>
>
>Jurgen Goering
>Piano Forte Supply
>(250) 754-2440
>info@pianofortesupply.com
><http://www.pianofortesupply.com>http://www.pianofortesupply.com
>
>On Dec 8, 2005, at 2:51 AM, Roger Jolly wrote:
>>Hi Don,
>>             The most likely cause will be the jack spoon 
>> button.  Many of the Korean pianos used a woven cloth instead of 
>> the more resilient felt,   The cloth gets hard and it makes a 
>> horrible noise when the button connects with the spoon. Another 
>> thing to check,  is the drop button leather.  Around this time a 
>> synthetic was used, and it hardens with age.  On release from 
>> check the balancier clatters against the drop screw.
>>
>>
>>With the first problem, needling the cloth can reduce the problem. 
>>Bin thar, done dat, it's a BS fix at best.  Now I bite the bullet 
>>and change the felt buttons.   You will have to reposition the 
>>spoons, due to the fact the felt punchings are thicker than the cloth.
>>
>>With the drop screw leather, the only fix is replace them with 
>>quality material.  Carefully mark the hammer rail position with 
>>respect to the brackets.  Remove the hammer rail, and the tops of 
>>the wippens are exposed so you can work on them,
>>
>>Remember to include a major regulation in your estimate.
>>
>>Regards Roger
>
>
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