This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Robert Moffatt=20 To: Avery Todd=20 Sent: Wednesday, September 20, 2000 12:25 AM Subject: Re: Fw: Yamaha problem Avery, Yes that's the one. I have done many of these repairs. Once again..take = a close=20 look at the rail. With the symptoms you describe, the problem is a bent = rail. Almost always. The rail doesn't look bent...but it is. First... purposely, = because of the action screw, but very..very slight deviations in the rail will cause the uneven = damper lift. Take the action and give it a good bend. This will certainly show you where the problem = stems from. If you had to rebend all of the damper wires....(I don't think anything = would cause them all to move haphadsordly, due to a bent "hanger"). Bending the damper wires will = correct the visual problem... but won't address the real problem. If it were a bent hanger, replacing, = or correcting the bent hanger should address the problem. If not.....then back to the rail. Warm regards, Bob ----- Original Message -----=20 From: Avery Todd <avery@ev1.net> To: Robert Moffatt <moffattr@cadvision.com> Cc: <atodd@uh.edu> Sent: Tuesday, September 19, 2000 6:54 PM Subject: Re: Fw: Yamaha problem > Hi Robert, >=20 > Well, I guess I finally figured out how to get your messages. They > still keep coming up blank on my school computer but today, I > forwarded a blank one to my home computer and I "think" this is > it. Right? This one came through fine at home. > Thanks for the post(s). I still don't know what the root problem > was/is but I went ahead and did a damper wire bending job (I was > very frustrated) and "so far", everything seems to be fine. > I tend to think that something Newton posted is probably the real > problem, a bent hanger. But since everything is working fine now, > and I can always go back and correct any problems, I think I'll just > leave everything alone for now. (One of the advantages of the type of > job I have.) :-) > Thanks again for your effort in posting me in spite of the = problems. > I still don't know what's causing them. >=20 > Regards, > Avery >=20 > At 10:27 PM 09/17/00 -0600, you wrote: > > > >----- Original Message ----- > >From: <mailto:moffattr@cadvision.com>Robert Moffatt > >To: <mailto:caut@ptg.org>caut@ptg.org ; <mailto:atodd@UH.EDU>Avery = Todd > >Sent: Saturday, September 16, 2000 2:11 PM > >Subject: Re: Yamaha problem > > > >Avery, > > > >Not a bother at all. > >It has been mentioned that metal fatigue in the bushing clips could = be the=20 > >problem. > >Highly unlikely, but not to be ruled out. Rebushing the lift rail = guide=20 > >bushings will eliminate > >any squeaks, groans etc. At the same time , polishing the lift rod = will=20 > >certainly help in this > >area as well, but has nothing to do with uneven damper lift. It has = also=20 > >been mentioned > >that movement in the action rail due to a "flattened rubber foot" ( = it's=20 > >called an upright > >action cap ) could correct the problem...no. The action cap serves = only to=20 > >straighten the > >intentional bend in the rail when the action is securely in place. If = > >there is as much uneven > >lift as you indicate, the action rail has been bent. Straightening = the=20 > >rail should be the remedy. > >Replacing the rail a sure cure. There are, as in all piano work, a = lot of=20 > >grey areas surrounding > >this particular problem. With this fix I'm assuming the piano has not = been=20 > >tampered with. Probably > >dropped or fallen over.... the usual cause in my experience. > >If you discover any other peculiarities...don't hesitate to write. > > > >Best wishes, > > > >Bob Moffatt > >Yamaha Authorised > >Factory Trained Technician > > > >----- Original Message ----- > >From: Avery Todd <<mailto:atodd@UH.EDU>atodd@UH.EDU> > >To: Robert Moffatt = <<mailto:moffattr@cadvision.com>moffattr@cadvision.com> > >Sent: Saturday, September 16, 2000 7:47 AM > >Subject: Re: Yamaha problem > > > > > Robert, > > > > > > Would you mind resending your message, if possible? > > > For some reason, it came through blank. I have that happen > > > here at school sometimes but still don't know why. Sorry > > > for the bother. >=20 >=20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/34/c2/5a/e7/attachment.htm ---------------------- multipart/alternative attachment--
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