This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi ! Then why the tone is changing so much with changes in aftertouch (on properly voiced hammers ?) We check that the tails aren't rubbing so I don't believe it it the reason. Again I believe a better energy transfer towards the action, and the same effect occurs in verticals to some point. Best 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 : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De la part de David Love Envoye : jeudi 29 mai 2003 10:08 A : Pianotech; Richard Brekne Objet : Re: Backchecking Height and an incredible help My guess is that if the hammer is checking so high that the tail rubs on the backcheck on the way up (just slightly) it will diminish hammer speed and the volume will be thus diminished making it seem like it is the close checking that is the cause. Otherwise, I put this in Carl Sagan's "Demon Haunted World". David Love davidlovepianos@earthlink.net ----- Original Message ----- From: Richard Brekne To: Pianotech Sent: 5/29/2003 12:34:58 AM Subject: Re: Backchecking Height and an incredible help BobDavis88@aol.com wrote: Hafta say I ain't buying this. The excursion of the string is so slight that I can't believe that an object 1/2" away could cause air to offer much impedance. I'm willing to bet if I held my thumb 1/2" from the string right above the strike point, no one could tell me when it was there and when it wasn't, blindfolded. Cant say I blame you. Does sound a bit fantastic.... to put it mildly. But next time you run into a grand that has obviously high checks you can try this out. Take any old note...maybe say A4 :), get a sense for its volume and compared with its neighbors. Run a few chromatics up and down. Then lower its back check to exactly 2 mm under the tail at drop and listen again. See what you think. I dunno, maybe you wont buy it then too. Maybe its like the proverbial green light at that last millisecond of sunset at sea..... But I do know what I heard. Sorry I don't have something more positive to offer as an explanation for optimal checking=louder tone. I'll be watching this space anxiously. Bob D RicB -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/84/e5/d7/2a/attachment.htm ---------------------- multipart/alternative attachment--
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