This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hello, I'd double check the keyframe, back and the bolts pressure. The tails may be touch the backcheck on their way up, did you check by pressing firmly on the hammer while the key goes up (no noise may be heard) The jack can catch in the whippen lever, blocking the lever on its way down(mean too thick whippen jack's cushion) or too much dip. No other idea today ! Best Regards. Isaac OLEG Entretien et reparation de pianos. PianoTech 17 rue de Choisy 94400 VITRY sur SEINE FRANCE tel : 033 01 47 18 06 98 fax : 033 01 47 18 06 90 cell: 06 60 42 58 77 -----Message d'origine----- De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de Wimblees@aol.com Envoye : lundi 29 septembre 2003 23:20 A : caut@ptg.org Objet : bobbling hammers, again Several months I asked about bobbling hammers in a grand. I discovered that the shank lenght was too long. I now have a similar problem with a D. But this time, I've rebuilt the action with new Steinway parts, (new h,s,f and wipps). There are three notes that are driving me nuts. Unless I really smack the note, the hammer doesn't want to check. They boble so bad that they hit the string on the rebound. The regulation is just like the other notes, (dip, l.o.,drop, etc.). Not only is key dip just like its neighbors, but when I increased key dip, it didn't solve the problem. There is enough damper lever clearance. I've adjusted the back checks to where the hammer checks almost back down on the cushion. When I try to make it check earlier, it catches. I've bent the checks so that the rake is enough to clear the hammer on the way up, but still catches it on the way down. I've reduced spring tension to the point of almost no rise, and I've sanded the backs of the tails. I even changed wippens on one key, but the problem is still there. What are some other things I should look at? Wim ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/d7/82/ac/b4/attachment.htm ---------------------- multipart/alternative attachment--
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