Results are In! Re: moisture in wool or wood.

[Farrell]

Good idea Richard. I think I will try that. I have lots of old flanges
laying around. My first trial there was to simply see whether a flange hole
got bigger or smaller with increased humidity/moisture content. It is clear
to me, contrary to apparent popular belief, that a hole in a flange
decreases in diameter with increased humidity/moisture content.

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

----- Original Message -----
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: <pianotech@ptg.org>
Sent: Saturday, January 13, 2001 4:22 AM
Subject: Re: Results are In! Re: moisture in wool or wood.


>
>
> Ron Nossaman wrote:
>
> >
> > What the heck, why not? The fact that the rod is tighter in the hole
means
> > what? It means that the hole is possibly smaller overall, possibly
narrower in
> > one direction even though it's the same or wider in another - but that's
not
> > where I'm going. My thought is that if you can still push the rod into
the
> > holes, they couldn't have gotten all that much smaller - surely not
enough
> > smaller to have compressed a cloth bushing enough to seize a center pin
enough
> > to prevent it's rotation in the flange short of standing on it. Since
it's
> > unlikely that the pin swells that much either, that leaves either, or a
> > combination of, the birds eye swelling and jamming between the flange
ears (if
> > they don't spread with the swelling of the flange body (another
measurement
> > test?)) and the bushing swelling.
> >
> > Ron N
>
> Not meaning to be picky... grin.. but I will... how does Terrys experiment
yeild
> any information about the amount of compression that would be exerted on
the
> centerpin ? I mean the drill bit is really hard and aint going nowhere...
a felt
> bushing would give a bit, and I dont think we are exactly clear on just
how much
> pressure it takes to cause a centerpin to get sluggish.
>
> That being said... Terry.. it might be more enlightening to try the
following ...
> do the same experiment with and without centerpin bushings... and see
which one
> gets tight.
> --
> Richard Brekne
> RPT, N.P.T.F.
> Bergen, Norway
> mailto:Richard.Brekne@grieg.uib.no
>
>
>
>