This is a multi-part message in MIME format. ---------------------- multipart/mixed attachment Avery, Hammer shank pinning Wippen post pinning Let-off too close Backcheck angle wrong Hammer heel too short Hammer heel poorly shaped Hammer heel glazed Damper up stop rail too high Hammer spring too strong or too weak Jack not clearing knuckle Jack jamming against window end Checking too high Checking not deep enough into backcheck Hammer head loose Backcheck needs roughening Also check the attached file. Good hunting Newton ---------------------- multipart/mixed attachment Your measurement of spread action is Steinway "standard", but you may be served better with 4.440" instead of 4.406. You can try a narrow piece of veneer (just to cover the outer lobes) at the wippen flange. This may give you enough clearance to work with, because I am thinking that the capstans arein the wrong place, too far back. Other measurements yhou can try are: Keybed to wippen center 3.250" Keybed to hammer center 5.750" Difference between hammer pin and wippen pin when the stack is on a table 2.665" Get rid of the shanks with felt knuckles and get the small knuckle shanks from Renner America. Look at the bottom of the wippen cushion. If the detent of the capstan is not in the center or toward the flange of the wippen then you definately have a capstan location problem. Try shimming a couple of wippens and regulate those notes and see if you can get some cleanance for the jack. To determine the optimum spread action is not difficult. Crefully measure up and down weight of a few keys and then increase spread action. DO the same going in the opposite direction. The best spread is that which creates the smallest different between up and down weight. It is far more likely that the capstan is mislocated, but this can only be determined by using Stanwood's formulus. Also check to see how many weights are in the keys, especially in the bass. If there are only two weights there is room for more. If there five or more then you do indeed have a geometry problem. COmpare the relocation of the new and old knuckles. ---------------------- multipart/mixed attachment--
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