Sometimes a "click" occurs when the keyframe (and glides, and spring and other contact points) "become mated" with the surface they contact. So the first time you press the pedal, you get a kind of clicking sound, usually less on subsequent times, and usually less when pressing the pedal fast. Really the only fix is to address every single bearing surface, making them all smooth, clean and well lubed. The treble end of the keyframe might need some sanding to become smooth (dents develop from contact with the spring). Metal should all be polished with Flitz or the like, and have McLube applied to it. Wood should all be sanded down to maybe 600 paper, wiped clean with a rag, and have teflon applied. Of course, loose wood joints or glides or whatnot could also be the cause, as others have pointed out. Regards, Fred Sturm University of New Mexico fssturm at unm.edu On Nov 24, 2009, at 3:20 PM, Paul T Williams wrote: > Hi all, > > Our Steinway D in one of our halls has a weird clicking or groaning > noise with the unacorda shift movement. It makes a "click" or > something like it when pushing the pedal down. It is minimal when > pushing quickly, but is very noticable on a slow push. It's also > even more noticable on pushing and releasing the pedal. > > I sanded and lubed the right side of the key-frame, and also > polished the return spring, but it only went away slightly. It > sounds like that is where the sound is occurring. The lyre action > is not where it's happening, so where might I look next? > > Thanks > Paul -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20091124/b3a46a3c/attachment.htm>
This PTG archive page provided courtesy of Moy Piano Service, LLC