This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment When I first started to read your post, I thought that one of the = ribs might be separating near a crack in the soundboard, but when I got = to the part about it occurring on the key release, it must be something = to do with the damper, or else some foreign object actually did get into = the action cavity somehow.=20 The "safety factor" you mention is aftertouch. You can easily check = that by feel when you get there. There has to be some. I doubt whether = it's the rep lever, unless it's a case of parts that are loose on the = rail.=20 To clean the rep springs, take your spring tool, pop the spring out = to the side and clean it off. You can hit it with a mild abrasive if you = need to. If you're going to do that, at the same time check to see that = the slot it rides in isn't also gummed up with junk. I think it's going to be one of those things that become obvious = when you see the piano, but leaves you scratching your head before you = arrive. Hope it's not the soundboard, though.=20 ----- Original Message -----=20 From: Keith Roberts=20 To: pianotech@ptg.org=20 Sent: Monday, March 25, 2002 9:47 AM Subject: cellophane I just got a call from a client who said it sounded like there was = cellophane in her piano when she played. It made her jump up and look to = see what was "in there". She played a few bass notes over the phone and = you could hear a definite action clatter. Then she noticed it was = occurring when she released the key. I guess I'm revealing my age when I = say I know the "sound of cellophane". I think the thing noticed most = about cellophane was the rustling noise that had an unusual = crackling/pop noise with it. Nothing quite like it. If you guys don't = nail this one, I'll be surprised. This is probably going to take me into = my next field of study. I have a good understanding of key dip/hammer = blow distance/let off though I've heard talk of a safety = factor/relationship that I would like to know more about. I've taken = Nick Gravanite? Action geometry and Wally Brooks, effective weight = control and couple of grand regulation classes. Now to the repetition = lever. My guess, and it's purely a guess, the noise is the rep lever = going through it's cycle. Guy Nichols class, Extreme measures, he said = "pop and buff" the rep springs. What's the best way to do that and is = that anywhere close to my problem noise? By the way, Guy's class is a good one to take after lunch. you won't = fall asleep.=20 Keith R ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/35/8d/51/90/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC