---------------------- multipart/alternative attachment Richard, I've had a Samick Wurly, and for Samicks the problem is the pinning of the under-lever flanges. Some of the wires needed improved bending to line up with the upper 'tray' . Lubing with CLP was not adequate. I did some reaming and some heating up with a soldering iron. Both worked equally well for the period of time I owned it. BTW the seizing up of the centers increased with usage. Brand-new, there was no problem. The sostenuto system needed adjusting too, the tests mentioned are excellent. Good luck, Andrew Anderson At 12:51 PM 1/26/2006, you wrote: >In a message dated 1/26/2006 6:08:42 AM Pacific Standard Time, >richard.ucci@att.net writes: >Help me out here. New Wurly 5' grand. Several dampers in tenor >section are getting hung up. When offending key is played without >using sustain pedal -no problem. >Depress pedal by itself and damper does not return to rest on >strings. Sostenuto pedal is working correctly , can't determime if >the tab is brushing against it or not, have pulled damper out and >lubed rail bushing, flanges do not seem to be slow. I can't recall >if they are weighted . > >Richard, > >Some diagnosis can be done without removing the action. Quick test: >Depress damper pedal and release. Lightly push down on hung damper >head. If it returns with a light snap or won't go down, the >sostenuto tab is rising past the sostenuto rail, probably because >the damper PEDAL stop (not just the upstop rail) is allowing the >damper pedal to take the dampers too high. On Steinways, you can >confirm by pulling action out 1/8 inch and trying again. Because the >sostenuto is on the key action, the damper will now not hang. > >If on the other hand it hangs when using the key, the damper upstop >rail is probably too high, allowing the tab to blow by the rod. > >If the damper does not snap, but goes down with steady resistance, >you can then go after friction in the underlever flange, top flange, >or bushing. First, play the note. Push the head lightly to left and >right. If it moves one way, the bushing is PROBABLY free. You can >develop a feel for how much it is sprung against the bushing. If it >flunks or is inconclusive, THEN you can remove the action. > >Lift the underlever with one finger. You can feel friction. With one >finger of the other hand, press the wire gently left/right, right >under the bushing. One way it will move with you, off the bushing. >The other way it won't. If it moves opposite your push both ways, >the bushing is probably too tight. If not, then you can remove the >wire and check for top flange friction and mount flange friction. >Last resort take out the underlever. It takes longer to describe than to do. > >Good luck, >Bob Davis > > ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/2f/46/08/7d/attachment.htm ---------------------- multipart/alternative attachment--
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