Renner bushings and graphite:(was Lubrication as a wear preventative.)

[Horace Greeley]

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FWIW, I have always attributed the color bleeding to have something to do 
with installation of the pre-adhesive-d cloth, and not with the material of 
the cloth...could be wrong...it's certainly happened before.

Horace


At 06:28 PM 8/28/2004, you wrote:
>I know that the flange bushing cloth that they sell in strips has adhesive 
>on one side and what certainly looks like graphite on the other.
>
>V T <pianovt@yahoo.com> wrote:
>
>That puzzles me too, and that's why I wrote to them.
>In looking at new Renner parts I can clearly see that
>some liquid was applied to the felt bushings. There
>is a bit of red color bleeding out into the
>surrounding wood, and I clearly see some dark stuff on
>the felt as well.
>
>Vladan
>
> >Doesn't Renner have graphite in their bushings?
>
>Avery
>
>At 02:53 PM 8/28/04, you wrote:
> >Hello Ryan and the List
> >
> >This is an excerpt from a letter I sent to Renner in
> >Germany:
> >
> >"I wonder if you could let me know about any adverse
> >effects of using the "Protek" brand lubricant on the
> >center bushings of your hammer shanks. It is a
>fairly
> >common practice in the U.S. to put a few drops of
>this
> >lubricant on the center bushing felt while preparing
> >a new shank/flange for insta! llation and while sorting
> >the shanks for center bushing friction..."
> >
> >And here is the relevant part of their response:
> >
> >"Renner does not treat the center bushings.
> >To our knowledge there are no chemical reactions or
> >adverse effects when center bushings are treated.
> >Therefore, this may be done, there is nothing to say
> >against the treatment with a lubricant..."
> >
> >Vladan
> >
> >====================================
> >
> >List,
> > This general discussion on friction and factory
> >set-up of weighting leads me to wonder what
> >manufacturers pre-lubricate their centers ( beyond
>the
> >natural lanolin ) so that weight and leverage are the
> >prime aspects contributing to the "touch", and to
> >inhibit future wear.
> > I would also like to get opinions on favored
> >center pin lubricants.
> > Thump
>
>
>
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>
>Ryan Sowers, RPT Puget Sound Chapter
>Pianova Piano Service
>Olympia, WA
>
>
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