[pianotech] re. Clunking Upright stickers

Joseph Garrett joegarrett at earthlink.net
Fri Mar 11 09:22:57 MST 2011


David asked:
"P.S. Why would wrap-around sticker cloth be quieter? 
There are plenty of old uprights with just the square of cloth 
on the bottom of the stickers that don't clunk on key return."

David, 
You're yanking my cord...right? To answer the first question: Because the contact area is NOT glued to the sticker. And, there is air between the felt and the wood, which makes for quieter. You find that principle used on back rails and many other applications. I'm suprised you did not know that.<G>
As for the second question: I have not clue why other "old uprights" don't "clunk" a loud as this one, In question. The answer to that, probably, would be in the form of MANY answers, I suspect.<G> Kinda like "why does my VW bus get better gas mileage than your VW bus?" I have no clue.<G>
Regards,
Joe


Joe Garrett, R.P.T.
Captain of the Tool Police
Squares R I
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