This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi Tom, Could it be someone has placed a paper punching on top of the felt> That = can cause a tic sound DAHIK <g> Joe Goss RPT Mother Goose Tools imatunr@srvinet.com www.mothergoosetools.com ----- Original Message -----=20 From: Joe And Penny Goss=20 To: An open list for piano technicians=20 Sent: Wednesday, January 11, 2006 9:31 PM Subject: Re: mystery click puzzler Hi Tom, I suspect that there is something attached to the felt on the edge of = the fallboard. or loose felt with hard glue making a noise against the = wood. Joe Goss RPT Mother Goose Tools imatunr@srvinet.com www.mothergoosetools.com ----- Original Message -----=20 From: Tvak@aol.com=20 To: pianotech@ptg.org=20 Sent: Wednesday, January 11, 2006 7:51 PM Subject: mystery click puzzler List Here's a puzzler for you all; an unsolved puzzler at that. I've = executed a repair, but I have no idea why it works... Kawai grand, about 15 years old. There's a click on F#2, G#2, and = A#2 when the key is depressed. Not when it's released but at the moment = they're depressed quickly. (It won't happen on a slow strike.) I take the action out to check for loose screws, debris on the keys, = any anomaly, but nothing. In fact, the click is gone. I did tighten = one screw on one of the action rails, so, maybe that was it... Put the action back in, still no click. Reinstall the cheek blocks, = still no click. =20 When I put the fallboard back on, there's the click again. Pull the = fallboard forward to a 45 degree angle, no click. Back to vertical, = click, OK. The keys must be hitting the fallboard, but wait a minute. It = happens when the key goes down, not up. The fallboard does not extend = backwards inside all the way to the back side of the balance rail, so = when the key goes down, there is MORE clearance from the fallboard. If = the click was on the way up, I'd say it was hitting the fallboard when = it returned to the up position, but it happens on the way DOWN! Am I just stupid? Am I missing something here? My solution? I raised the fallboard so that there was more = clearance from the keys and now there's no click.=20 But how can the keys strike the fallboard on their way down and make = a noise? It doesn't make sense. It's not the upstop rail being depressed by the fallboard (That = click would happen on the way up, too.). I put felt on the backside of = the fallboard at the point where the keys would come into contact with = it if that was the problem to see if that changed the sound or = eliminated it,, but it didn't have any impact. I guess I should move on, because I fixed the problem. But I just = want to know: what caused the click? Any ideas? Did I describe this well enough? =20 Tom Sivak Chicago ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/6c/10/44/a0/attachment.htm ---------------------- multipart/alternative attachment--
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