Yamaha Butt Spring Cord

[Farrell]

Thank you Tony. I goofed, you are right, I only need to replace the flanges,
not the whole butt. Thanks. I'll try the little thing after check - the
little second sounding of the strings. Get some sleep.

Terry Farrell

----- Original Message -----
From: "Tony Caught" <caute@optusnet.com.au>
To: <pianotech@ptg.org>
Sent: Thursday, August 23, 2001 8:34 AM
Subject: Re: Yamaha Butt Spring Cord


> Hi Terry,
>
> I'm tired, just driven 1,500 kilo in 15 hrs but, and I can't play either.
>
> If the cord or spring is broken:- After the note is in check and you lift
> your finger slightly of the key the not (action) goes out of check. At
this
> point (because the weight of the upright hammer in this position has no
> backward weight) the pressure of the jack on the hammer butt is enough to
> push the hammer forward and onto the string making a little note playing
by
> itself.  Also required to assist the hammer of the string faster than just
> the bounce. Also to give some resistance to the hammer.
>
> If you don't get the right answer I will two finger type a detailed
> explanation.  Maybe.
>
> Buy the new flanges from Yamaha (relatively cheap) Change all flanges,
(very
> little travelling to do) reface the hammers (most likely needs it anyway)
> and align in piano.
>
> 6 Hrs
>
> Tony
>
>
>
> ----- Original Message -----
> From: Farrell <mfarrel2@tampabay.rr.com>
> To: <pianotech@ptg.org>
> Sent: Thursday, August 23, 2001 9:22 PM
> Subject: Yamaha Butt Spring Cord
>
>
> > We all have seen the broken cords on the hammer butt springs on Yamaha
> > uprights. Perhaps many of us have replaced a set. I have several Yamaha
> > uprights with this condition (several to many broken cords) in my
service
> > clientele. I don't play. I tune them. I hit the key and the hammer
> returns.
> > So what difference does the spring/cord make? I can see that if you had
> slow
> > action centers, it would make a difference, or if you were an advanced
> > pianist, the quicker returning hammer might make a difference. I guess a
> > broken cord should also cause a reduction in downweight and a decrease
in
> > upweight, and therefore an overall decrease in performance, i.e. less
> > expression control because of too light a downweight and slower
repetition
> > because of slower key return.
> >
> > Hmmmm. Did I just answer my own question? I think I may have. Anything
> else
> > I have missed? Thanks.
> >
> > P.S. how many hours do ya'll figer to replace 88 butts, align hammers &
> > travel? Maybe 12 to 14 hours? Has anyone any experience with other
hammers
> > on Yamaha uprights?
> >
> > Terry Farrell
> >
> >
>
>