In a message dated 10/23/2007 7:45:10 PM Pacific Daylight Time, davidlovepianos at comcast.net writes: Someone with the proper engineering vocabulary can give the proper explanation but I think it has to do with changing vectors as the hammer and shank travel in a circle. I'm not an engineer, but the point of least sliding of the knuckle-to-repetition lever contact point is when it is on a line drawn between the shank pin and the repetition pin. In most actions, the contact point at rest is already below the line, and it only barely crosses it at letoff; so lowering the shank makes for even more sliding at startup and therefore more friction. Bob Davis ************************************** See what's new at http://www.aol.com -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20071024/7cca19cb/attachment.html
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