I've never heard of that on Yamaha's. I "think" it was Samick that had that problem. Avery Todd Houston, TX On Wed, Mar 19, 2008 at 10:34 PM, Greg Newell <gnewell at ameritech.net> wrote: > Steve, > > Are you sure this isn't a center pin plating issue? I > recall reading somewhere that the plating comes loose and binds in the > action center. The more you play it the worse it gets until you stop for a > while. > > > > Greg Newell > > Greg's Piano Forté > > www.gregspianoforte.com > > 216-226-3791 (office) > > 216-470-8634 (mobile) > > > > *From:* pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] *On > Behalf Of *Steve Blasyak > *Sent:* Wednesday, March 19, 2008 12:29 PM > *To:* pianotech at ptg.org > *Subject:* Yamaha Jack issue > > > > Terry, > > I had the same problem with an M 500 a couple of weeks ago. I have had > similar problems/ issues with consoles or uprights in the past usually in > the high treble were the hammers are lighter. I always considered this a key > weighting issue. This particular instance was at B 1. Checked all friction, > whippen, jack and hammer. All good, in fact if anything they were pinned too > loose. Tried more lost motion, lubricated jack, teflon on butt leather. > Increased key dip. Increased jack spring tension. Nothing worked. Well in > the end, with the damper pedal depressed and rapidly playing the note it > would fail after about twenty repetitions. Under normal playing, if the > jack failed to return under the hammer butt, as soon as you release the > damper pedal the jack would slip back under the hammer butt. So I told the > client "that's as good as it gets", and called it a day. Driving away, I > tried to rationalize that it was an unexplained phenomenon. I could not > escape the feeling of failure to solve the problem. > > One thing that was mentioned by someone I can't remember who. What would > the key bed have to do with this phenomenon? > > Steve Blasyak > Orange County Ca. > > Pura Vida > > ------------------------------ > > Need to know the score, the latest news, or you need your Hotmail(R)-get > your "fix". Check it out. <http://www.msnmobilefix.com/Default.aspx> > -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080320/fc686ba0/attachment.html
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