Knuckles

[David ilvedson]

You usually have to teflon a few times before it holds for any 
length of time.  

David I.

Date sent:      	Mon, 06 Dec 1999 22:48:53 +0100
From:           	Richard Brekne <richardb@c2i.net>
To:             	pianotech@ptg.org
Subject:        	Re: Knuckles
Send reply to:  	pianotech@ptg.org

> Just a quick follow up on this.. Whats the best way to determine which way the
> nap goes ?? I simply can not discern a difference on the set I have. They seem
> like equally smooth either way... grin..
> 
> Renner tells me the blue line shall go towards the hammer. I am tempted to opt
> for getting a smooth touch, and dealing with the jack return from other angles.
> I hate it when jacks develope that "scaping" sound on slow pressing of the key.
> Several players I know seems to always react to this in some way or another
> under usual play, and if I use Teflon powder.. well they are happy for a few
> days until it wears off.
> 
> 
> Richard Brekne
> I.C.P.T.G.  N.P.T.F.
> Bergen, Norway
> 
> Delwin D Fandrich wrote:
> 
> > In over 30 years I've still not found any consensus on this.  Technicians
> > and factories still seem to be about evenly divided.
> >
> > My personal preference is to install the leather so that the nap lies toward
> > the hammer.  The idea being that there is much more force driving the jack
> > out away from the knuckle than there is resetting it as the mechanism
> > returns to rest.  If the clearance is set a bit tight and the spring is a
> > bit loose, the jack needs all the help it can get.
> >
> > In truth, of course, after a few thousand cycles it really doesn't matter at
> > all.
> >
> > -- ddf
> >
> > ---------------------------------------------------------------------
> >
> > ----- Original Message -----
> > From: Richard Brekne <richardb@c2i.net>
> > To: <pianotech@ptg.org>
> > Sent: Thursday, December 02, 1999 1:15 AM
> > Subject: Re: Knuckles
> >
> > > Many thanks Lloyd. I seemed to remember as much but I wanted to be sure.
> > > Tried to check the nap of the knuckle... Seemed just as smooth in either
> > > direction really, If you get time you might describe this in a bit more
> > > detail, and it would certainly be interesting for many on the list to
> > > hear abit about the reasoning for which way the nap should lie. The jack
> > > moves in both directions across the knuckle...so which direction it
> > > needs the smooth run, and why this is so.
> > >
> > > thanks again
> > >
> > > Richard Brekne
> > > I.C.P.T.G. N.P.T.F.
> > > Bergen, Norway
> > >
> > > "Lloyd W. Meyer" wrote:
> > >
> > > > Richard,
> > > >
> > > > The line should be positioned in the direction of the hammerhead.
> > > >
> > > > Lloyd Meyer
> > > > Renner USA
> > >
> > >
> > >
> > >
> 
> 
> 
> 


David Ilvedson, RPT
Pacifica, CA
ilvey@jps.net