Excessive friction

[Elian Degen J.]

Dear List.

I found a similar problem with a shop with which I was working. This may
give you a clue.
This shop had controlled humidity inside below 40% rel humidity, I don't
remember how much exactly. It worked great for piano and pinblocks assembly,
but when they rebushed we would have the same problem.

My comment

Elian
----- Original Message -----
From: Thomas D. Seay, III <t.seay@mail.utexas.edu>
To: <caut@ptg.org>
Sent: Monday, May 03, 1999 3:34 PM
Subject: Excessive friction


> Dear Colleagues,
>
> We here at the University of Texas at Austin are experiencing a few
> intermittent problems with Renner shanks and flanges. For some unknown
> reason, a dozen or so from each set will literally seize up because of
> excessive friction. When we examine the shanks and flanges in question,
> what we often find is friction so great that the hammershank barely swings
> two times. In one case, I actually rebushed and repinned an entire tenor
> section, only to have the problem return, albeit in a more limited way
than
> before. I might add that a drop of Protek on each bushing caused the
> friction to disappear completely and immediately. The question is - where
> is this friction coming from?
>
> This issue is NOT widespread, and is it certainly not my intention to
> criticize Renner USA by rasinig it. On the contrary, I find Renner parts
to
> be unusually well designed and machined, which makes this issue even more
> mystifying. I am wondering if anyone else has experienced this problem?
>
> Many thanks.
>
> Tom Seay
> mailto:t.seay@mail.utexas.edu
>
>
>
>