Yamaha damper question

[Isaac OLEG SIMANOT]

Roger,

You should be right indeed (I hope not of course). I recall now more than
one G2 of this vintage with sluggish pinning.

I will warn the customer for sure. It is boring how we can open a can of
worms just because we want to do the right thing, again and again.

Sorry for the emotive post.

regards.

Isaac


> -----Message d'origine-----
> De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part
> de Roger Jolly
> Envoye : vendredi 3 mai 2002 18:11
> A : pianotech@ptg.org
> Objet : RE: Yamaha damper question
>
>
>
> Hi Isaac,
>           Yes I have seen some pins from the early 70's give problems.
> Remove a few pins and if they looked stained and scored, you have
> a plating
> problem. The first ting I do with this age of Yamaha, that has started to
> get heavy and sluggish, is remove a few pins and inspect them.
> CLP seems to
> work only for a short time, on this problem at best.  If you are
> suspicious, warn the customer, so you are not paying for the inevitable
> recall.
> For some strange reason, I noticed it more on underlever
> assemblies in this
> neck of the woods.
> If Mark is reading he could tell us the years that they had the problem.
>
> Regards Roger
>
>
> At 08:26 AM 5/3/02 +0200, you wrote:
> >Yesterday worked on a Yamaha G2 that was needing some deep
> needling, PR and
> >tune, and un muting of all aliquot scales (ha ha ha).
> >
> >Almost some hammers I moved in a vertical position was blocking
> after that.
> >Treated with CLP and moved back & forth a few time, and it works, but I
> >really wonder if the pinning is shot . I had the case yet where
> CLP did not
> >help enough to bring things back .
> >Touch a bit heavy of course (trucking) on this piano.
> >
> ># E 173363 ( 1973 )
> >
> >Do some of you had tight pins problems on these years grand's ?
> >
> >Thanks
> >
> >Isaac OLEG
> >
> >
> >
> >
> >
> >> -----Message d'origine-----
> >> De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part
> >> de Roger Jolly
> >> Envoye : jeudi 2 mai 2002 21:11
> >> A : pianotech@ptg.org
> >> Objet : Re: Yamaha damper question
> >>
> >>
> >> Hi Clyde,
> >>           Yep, and the right vintage. Don't beat around the
> bush. Prepare
> >> the customer to pay for the underlever tray removal, and
> reinstallation.
> >> Replace all centre pins. It's about 8hrs work to do, and get them
> >> all timed.
> >> I like to ream them all out to a #21 pin so that I remove some bushing
> >> cloth and get the bushings clean.   I've done lots of them, and
> >> no recalls.
> >>
> >> Regards Roger
> >>
> >>
> >>
> >> At 07:57 AM 5/2/02 -0400, you wrote:
> >> >Friends,
> >> >
> >> >Earlier this week I received a complaint that a key was sticking on a
> >> >1976 Yamaha G2 grand piano.  When I arrived I diagnosed the problem as
> >> >the D#4 damper not returning to rest on the strings after the note was
> >> >played.  I replaced the center pin holding the damper lever to the
> >> >damper lever wire flange and all was fine.  The same thing
> had happened
> >> >to the neighboring D4 damper three years ago.
> >> >
> >> >The removed pin looked discolored where it rotated in the
> felt bushing,
> >> >so I decided to check it out under a microscope and see if I
> could learn
> >> >something.  Some friends have a cheap one, but it served to
> show me that
> >> >the center pin appeared to be deeply scratched around the pin.
> >> >
> >> >Now to my questions:  Is this a case of flaking plating that I heard
> >> >about?  If not, what is likely the problem?  Are the center pins I buy
> >> >from Schaff plated as well?  Will this become a chronic
> problem for this
> >> >particular piano?  If so, is there any preventive measure I can take
> >> >without replacing that center pin in every damper?
> >> >
> >> >Thanks,
> >> >Clyde Hollinger, RPT
> >> >
> >> >
> >> >
> >> >
> >> Roger Jolly
> >> Balwin Yamaha Piano Centres.
> >> Saskatoon/Regina.
> >> Canada.
> >>
> >
> >
> Roger Jolly
> Balwin Yamaha Piano Centres.
> Saskatoon/Regina.
> Canada.
>