Yamaha GH1 pinblock fit Thanks everybody for your thoughts. Have any of you had satisfaction from Yamaha service center regarding this 'poor design'? On Sun, Nov 16, 2008 at 10:52 AM, <pianotech-request at ptg.org> wrote: > Send pianotech mailing list submissions to > pianotech at ptg.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://ptg.org/mailman/listinfo/pianotech_ptg.org > or, via email, send a message with subject or body 'help' to > pianotech-request at ptg.org > > You can reach the person managing the list at > pianotech-owner at ptg.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of pianotech digest..." > > > Today's Topics: > > 1. Vacation reply (pianotoone at hotmail.com) > 2. Re: pinblock fit (Will Truitt) > 3. Re: Yamaha GH1 tenor instability (Al Guecia/AlliedPianoCraft) > 4. Vacation reply (pianotoone at hotmail.com) > 5. seized let off buttons (lee innocent) > 6. Re: seized let off buttons (Mike Kurta) > 7. Re: Yamaha GH1 tenor instability (wimblees at aol.com) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 16 Nov 2008 04:45:27 -0800 > From: <pianotoone at hotmail.com> > Subject: [pianotech] Vacation reply > To: pianotech at ptg.org > Message-ID: <BAY0-MC7-F3A4B8143499CC902C84E9C9100 at phx.gbl> > Content-Type: text/plain; charset="us-ascii" > > An HTML attachment was scrubbed... > URL: < > http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/64e2c79b/attachment-0001.html > > > > ------------------------------ > > Message: 2 > Date: Sun, 16 Nov 2008 08:08:26 -0500 > From: "Will Truitt" <surfdog at metrocast.net> > Subject: Re: [pianotech] pinblock fit > To: <l-bartlett at sbcglobal.net>, <pianotech at ptg.org> > Message-ID: <001e01c947ec$699b2900$3cd17b00$@net> > Content-Type: text/plain; charset="us-ascii" > > Hi Les: > > > > I think the problem is that doing so would make everything a "very solid > fit". You could not control the outflow of the epoxy onto the plate and > tuning pins and elsewhere, and solidifying them too. > > > > Plus, if anyone ever tried to replace this pinblock, I'm pretty sure they > would be cursing you for this "very solid fit" when they tried to remove > it.. > > > > Will > > > > From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On > Behalf > Of Leslie Bartlett > Sent: Sunday, November 16, 2008 7:28 AM > To: pianotech at ptg.org > Subject: Re: [pianotech] pinblock fit > > > > I'm really ignorant about this stuff, but the small piano could be turned > upside down and epoxy run down in those spaces to make a very solid fit. > Would that make any sense? > les bartlett > > Will Truitt wrote: > > Hi Debra: > > > > As a followup to Marcel's point, I would start by removing the action. > Then > take a large hand mirror and a strong light and examine the fit between the > plate flange and the pinblock for gaps visually. You can also take a > feeler > gauge of about .004 and insert it into any gap you find there and run it > along between the plate flange and pinblock until you hit resistance. > Chalk > the beginning and end points on the pinblock. Do this along the length of > the pinblock face, and you will then have an idea of how much contact you > actually have. Another clue is to look at the tuning pins. If you see > gaps > at the back of the tuning pin (toward the stretcher) and the pins look like > they are pressing forward against the plate bushings, that is another sign > of poor fitting. > > > > I have made tapered hardwood shims and tapped them between the plate flange > and the pinblock with glue, after lowering tension. Upon retuning, I find > this helps stabilize the offending instruments. > > > > All that being said, Ron Nossaman's and others remarks on the poor scaling > in the tenor area are right on the money. Scalewise, it's a barking dog in > that area. > > > > Will Truitt > > > > F > > _____ > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/16970572/attachment-0001.html > > > > ------------------------------ > > Message: 3 > Date: Sun, 16 Nov 2008 09:08:24 -0500 > From: "Al Guecia/AlliedPianoCraft" <AlliedPianoCraft at hotmail.com> > Subject: Re: [pianotech] Yamaha GH1 tenor instability > To: <pianotech at ptg.org> > Message-ID: <COL114-DS11165F7C2204A488ABF121DD100 at phx.gbl> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=response > > I second that........It makes you wonder how a company would tarnish their > reputation by selling a piano like that! > > Al G > > -------------------------------------------------- > From: "Ron Nossaman" <rnossaman at cox.net> > Sent: Sunday, November 16, 2008 12:11 AM > To: <pianotech at ptg.org> > Subject: Re: [pianotech] Yamaha GH1 tenor instability > > > > >> Has anyone else been as frustrated as I am trying to keep the tenor > >> octave of the Yamaha GH1 in tune? Even if I pitch raise and > >> over-pull, by the end of the tuning, that section WILL NOT HOLD! The > >> tuning pins are not loose in the block but I'm still thinking that my > >> next step might be to tap the tuning pins down into the pin block > >> along with tapping the strings down at their bearing points. Any > >> suggestions? Is this a structural problem with this model?? > > > > It's a design, specifically a scaling problem. Don't drive tuning pins, > > and don't seat strings. That won't improve a thing. This model isn't > > tunable, and will remain untunable whatever you try as a field repair. > > Ron N > > > > > > > > ------------------------------ > > Message: 4 > Date: Sun, 16 Nov 2008 06:08:49 -0800 > From: <pianotoone at hotmail.com> > Subject: [pianotech] Vacation reply > To: pianotech at ptg.org > Message-ID: <BAY0-MC11-F2076C4D31B01B61B175C72C9100 at phx.gbl> > Content-Type: text/plain; charset="us-ascii" > > An HTML attachment was scrubbed... > URL: < > http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/2422d8c3/attachment-0001.html > > > > ------------------------------ > > Message: 5 > Date: Sun, 16 Nov 2008 18:29:41 +0000 > From: "lee innocent" <ljinno at googlemail.com> > Subject: [pianotech] seized let off buttons > To: pianotech at ptg.org > Message-ID: > <f96919f0811161029s29f03737h81db1125e8050d64 at mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Hi,I am working on a 1920s Collard & Collard upright, I am trying to > eliminate the lost motion in the keys but the dollies on the end of the > keys > have seized. I have turned a few of them but they are snapping. I have > reshaped the hammers and am having the same problem adjusting the let off, > the metal parts are just shearing. ....any suggestions? > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/60147567/attachment-0001.html > > > > ------------------------------ > > Message: 6 > Date: Sun, 16 Nov 2008 12:41:24 -0600 > From: "Mike Kurta" <mkurta1 at comcast.net> > Subject: Re: [pianotech] seized let off buttons > To: <pianotech at ptg.org> > Message-ID: <009301c9481a$ee529970$650fa8c0 at HPa600N> > Content-Type: text/plain; charset="iso-8859-1" > > Try heating the part with the tip of a soldering gun. > Mike Kurta > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/8e81547b/attachment-0001.html > > > > ------------------------------ > > Message: 7 > Date: Sun, 16 Nov 2008 13:52:38 -0500 > From: wimblees at aol.com > Subject: Re: [pianotech] Yamaha GH1 tenor instability > To: pianotech at ptg.org > Message-ID: <8CB1633A166C3F3-13AC-2182 at WEBMAIL-DY28.sysops.aol.com> > Content-Type: text/plain; charset="us-ascii" > > Debra > > The pin block on this model isn't always fit to the plate flange. Pull the > action, and check with a feeler gauge, or use a mirror to check the fitting, > especially in the middle of the piano.? One way to fix it is to drive maple > shims between the block and the flange. > > > Willem (Wim) Blees, RPT > Piano Tuner/Technician > Mililani, Oahu, HI > 808-349-2943 > Author of: > The Business of Piano Tuning > available from Potter Press > www.pianotuning.com > > > -----Original Message----- > From: Debra Feiger <debra at ladytuner.com> > To: pianotech at ptg.org > Sent: Sat, 15 Nov 2008 6:32 pm > Subject: [pianotech] Yamaha GH1 tenor instability > > > > Has anyone else been as frustrated as I am trying to keep the tenor > octave of the Yamaha GH1 in tune? Even if I pitch raise and > over-pull, by the end of the tuning, that section WILL NOT HOLD! The > tuning pins are not loose in the block but I'm still thinking that my > next step might be to tap the tuning pins down into the pin block > along with tapping the strings down at their bearing points. Any > suggestions? Is this a structural problem with this model?? > > > -- > Debra Feiger, RPT > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/16f3e7aa/attachment.html > > > > ------------------------------ > > _______________________________________________ > pianotech mailing list > pianotech at ptg.org > http://ptg.org/mailman/listinfo/pianotech_ptg.org > > > End of pianotech Digest, Vol 1, Issue 43 > **************************************** > -- Debra Feiger, RPT 619-991-0993 debra at LadyTuner.com www.LadyTuner.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081116/f5f2ce11/attachment.html>
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