hammer "throw" on hard blow

Joe And Penny Goss imatunr@srvinet.com
Sat, 27 Aug 2005 13:58:18 -0600


Hi David, I have always wondered if a little CA on one of the wobbly kneed
shanks would be a remedy.
Never had a victim that I felt comfortable doing it to <G>

Joe Goss RPT
Mother Goose Tools
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message ----- 
From: "David Nereson" <dnereson@4dv.net>
To: <dnereson@4dv.net>; "Pianotech" <pianotech@ptg.org>
Sent: Saturday, August 27, 2005 1:35 PM
Subject: Re: hammer "throw" on hard blow


> David Nereson wrote:
>
> >    I often encounter, when using test blows, hammers that get "thrown"
> > left or right on a hard blow, missing one of the strings of the unison,
> > even though they hit all three on a soft blow.  This can happen just as
> > often on straight-bored hammers as angle-bored ones.   I'm not sure
> > why.  You can move the whole flange/butt assembly left or right so all
> > three strings will be hit on the hard blow, but then on a soft blow, it
> > barely contacts one of the outside strings.  Does the flange twist or is
> > the jack pushing one side of the butt (or knuckle) harder than the other
> > or what?
> >    A similar situation is that of the "rubber shank."  But usually
> > "rubber shanks" wobble badly during and after the blow, like throwing a
> > knife into a tree, where after it hits, the handle wobbles laterally
> > (doing-oing-oing-oing-oing-oing...).  This hammer being "thrown,"
> > however, is mainly during the blow, and no wobble after impact with the
> > string.
> >    How to correct?
> >    --David Nereson, RPT
>
>
> Oh, and I forgot to mention-- I already checked the obvious:  the flange
> screw is tight, the flange does not need re-pinning, and all glue joints
> are sound. --D.N.
>
> >
> >
> >
> > _______________________________________________
> > pianotech list info: https://www.moypiano.com/resources/#archives
> >
> >
>
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives


This PTG archive page provided courtesy of Moy Piano Service, LLC