>Shifting slightly to the concept of scruffing... The hammer >contact will always "scruff" towards the hammer pivot axis (unless >the pivot axis could somehow lie in the plane of the string). The >closer the pivot axis is to the string, the less "scruffing" will >occur. >Steve Fujan That's a good point Steve. Its a compelling reason, when designing a grand piano, for locating the hammer center pin and close to the string plane as practical, given that it needs to clear the pin block. I haven't looked at this matter with respect to the upright yet. I'll be drawing a side elevation over the next couple of weeks. Will look at a few options to see what seems to be an approach. My experience with upright piano action geometry is quite limited as yet. Ron O. -- OVERS PIANOS - SYDNEY Grand Piano Manufacturers _______________________ Web http://overspianos.com.au mailto:ron at overspianos.com.au _______________________
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