C88 Hammer Position

[Farrell]

Hi Tony. Thanks for the thoughts. I need a little clarification though. Like
my high school chemistry teacher used to say "units, units, units, where are
your units"! My post referred to a C88 strike point 1/8-inch below the top
termination point. I strongly suspect your numbers in your post reflect
ratios of strike point below top termination to total speaking length? If
that is true, then the 1/8-inch that Wally suggested for C88 would be
consistent with your apparent recommendation of a 1:16 ratio (speaking
length is 2 inches).

I realize the "1/8 on A0" is pretty much a dead give-away that you are using
ratios (where do I find hammer shanks 14 inches long???), but please clarify
so that I know you have not possibly mixed units. Thanks

Terry Farrell

----- Original Message -----
From: "Tony Caught" <caute@optusnet.com.au>
To: <pianotech@ptg.org>
Sent: Friday, November 09, 2001 6:09 AM
Subject: Re: C88 Hammer Position


> Hi Terry,
>
> Long time no write. Actually 1/16 is more like it. some like it even
higher
> but the top notes from C88 at 1/16 to C76 at 1/10 then to F69 at 1/8
should
> sound about right.
> Try just marking the strings at 1/8 on A0 and C88 on 1/16 and see where
the
> top treble lays when measured.  If you set C88 at 1/8, you can always heat
> the and bend the shanks and raise the hammer strike point to find the
sweet
> spot for your self.
>
> Regards
>
> Tony Caught
>
>
> ----- Original Message -----
> From: "Farrell" <mfarrel2@tampabay.rr.com>
> To: <pianotech@ptg.org>
> Sent: Friday, November 09, 2001 11:02 AM
> Subject: C88 Hammer Position
>
>
> > Hi List. I am installing a new action in an old upright. I need to
> determine
> > the best position for hammer height on C88. On a grand, I have the
luxury
> of
> > moving the action in and out to find best sound. How is this best done
on
> an
> > upright? Is there a general optimal position? Wally Brooks says 1/8"
down
> > from top termination. I realize he is quite knowledgable - and I will
> follow
> > his advice if I get no further input, but I wondered if there were any
> > differing opinions. The speaking length on C88 is 50.5 mm. Or should I
put
> a
> > hammer on C88 a bit on the low side and just lift the action up and down
> > trying to find a best height (seems like things could get out of hand -
so
> > to speak). Thanks
> >
> > Terry Farrell
> >
> >
>