Bob Davis writes: > >Somebody probably goofed slightly on this piano, but the click might still >not show up at first. I don't remember if this piano still had angled >capstans. I think so, and if so, even small things like knuckle and heel >cushion compression can make a difference if the contact point is really >close to the click point to start with. As they compress, and the capstan is >raised to compensate, its contact point goes back a tiny tiny amount. Also, >until it compresses, the heel cushion could hold the capstan away from >contact with the wood. What I'm saying is that maybe this piano didn't click >for a number of years. You are right. The click probably just started due to felt compression. However I don't think raising capstans was a factor, the piano has not been regulated in many years, and the hammers are setting right on the cushions. I could be wrong, but I think this piano had straight capstans. >If capstan placement was wrong to begin with, it wouldn't necessarily be >deducible from the regulation. A difference of 2 mm in capstan placement does >make a difference in the dip, but it's only about .015, which is tolerable. >It will only change the downweight about 3 grams. In this case we're talking about much greater distances - something like 8 - 10 mm John McKone, RPT St. louis Park, Minnesota (612) 280-8375 mckonejw@skypoint.com
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