Tight centers, etc.

[Joseph Garrett]

Ulrika,
It has been my experience that Nickle plated pins seem to cause two
problems. 1. In normal conditions, the nickle tends to "iron" the bushing
cloth so smooth that there is no friction whatsoever. This make pianisimo
playing impossible. 2. for what ever reason, in adverse conditions the
nickle tends to bind in the bushing cloth, causing extremely sluggish action
centers. I'm not sure it is the nickle or if there is something in the
bushing felt that interacts with the nickle, but this does occur. And,
sometimes without warning or explanation.
This has been my experience with Nickle Plated Pins. FWIW.
Regards,
Joe Garrett
----- Original Message -----
From: "Ulrika" <scotland_highland@yahoo.com>
To: <pianotech@ptg.org>
Sent: Thursday, August 30, 2001 8:13 AM
Subject: Re: Tight centers, etc.


> Richard
>
> not having any experience whatsoever with teflon
> powder, what properties does it have?
> Isn't there a possibility of the cloth becoming too
> compact?
>
> Joe,
> how big a difference does the nickle plating make? in
> what ways?
>
> Ulrika
>
>
> Richard Brekne <rbrekne@operamail.com> wrote:
> > While I usually read and nod appreciatively to Joes
> > posts, this one I have to take a little exception
> > to. Good quality bushing cloth is
> > fine, but with teflon powder rubbed in it becomes
> > absolutly wonderful IMHO..:) hehe... dare I
> > say...grin.
> >
> > I would use nothing else, having tried just about
> > all there is to try and found all else lacking. And
> > I would not use cloth alone. Its
> > good...but this is better.
> >
> > I get tighter fits with very stable friction over a
> > wider rh range. And I have yet to run into corrosion
> > problems of any kind..
> >
> > jtvfoh
> >
> >
> > 29.08.2001 01:15:58, "Joseph Garrett"
> > <joegarrett@earthlink.net> wrote:
> >
> > >Ulrika,
> > >Del already suggested teflon and I'm sure there are
> > other things that could
> > >be used to "impregnate" the bushing cloth.
> > >However, It is my firm belief that there is
> > absolutely no reason to
> > >"impregnate" good quality bushing cloth with
> > anything but a centerpin,
> > >properly fitted and of the proper material, (ie
> > brass, NOT NICKLE PLATED
> > >CENTERPINS!)
> > >(sorry for the little rant, there, but one of my
> > pet peeves.) Also, while
> > >we're at it I am a confirmed advocate of absolutely
> > nothing on the assembly
> > >to make it pivot within specs. (such as c.p.lubes
> > of who knows what
> > >substances that are secret.)
> > >Best regards,
> > >Joe
> > >
> > >
> >
> > Richard Brekne
> > RPT, NPTF
> > Sydneskleiven 1
> > 5010 Bergen Norway
> > mailto:rbrekne@broadpark.no
> >
> >
>
>
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