Backcheck height

[Avery Todd]

Thanks David,

I've been delaying posting about this but I think now, I need to.

There is also another potential problem which I've had to deal with on our
newest D. I don't know if it was done that way at the factory or at the
dealer but the backcheck height is appreciably too high. I've had "clunking"
noises from the hammer shoulder rebounding on it; notes failing to repeat in
a very fast repetitive "situation" (had complaints about it), because the
shoulder was getting hung up on the backcheck (I couldn't make the hammer
check high enough because the checks were too high), plus what has  already
been mentioned about the tails rubbing on the backchecks. It's been a royal
pain, believe me.

As soon as I can get the money (considering Texas' budget problems), I'm going
to replace the backchecks and wires and set them so that the tail at letoff is
app. 2 mm. above the backcheck, assuming the hammer bore distance is correct,
of course. :-) That's what I've always been told anyway and it has always
worked for me! No matter what the dealer tech likes! :-)

Avery

At 02:08 PM 05/27/03 -0700, you wrote:
>Umm, because it works.   Lower and you will not get the hammer to check
>high enough with adequate surface contact between tail and check, higher
>and the tail will tend to catch on the hammer or the check will catch on
>the lower shoulder of the bass hammer.
>
>David Love
>davidlovepianos@earthlink.net
>
>
> > [Original Message]
> > From: Alan Forsyth <alanforsyth@fortune4.fsnet.co.uk>
> > To: Pianotech <pianotech@ptg.org>
> > Date: 5/27/2003 1:00:46 PM
> > Subject: Backcheck height
> >
> > Dear listed ones,
> >
> > >>>>"The backcheck should be set so that when the hammer rises to its
> > highest point (at let-off) the bottom of the tail is 1/16" above the top
>of
> > the backcheck.  Tails should be 1" long ......
> >
> > David Love">>>>
> >
> > Umm ....Why??
> >
> > AF