If you are referring to the all-felt knuckle you had two choices-well, you
didn't have choices at all but they did seem to come in two flavors. One was
exceptionally hard and lasted quite a long time but was really, really
noisy. The other was softer, quiet and didn't last very long at all. It
didn't take long for Steinway to switch back to leather-covered knuckles.
ddf
Delwin D Fandrich
Piano Design & Fabrication
620 South Tower Avenue
Centralia, Washington 98531 USA
del at fandrichpiano.com
ddfandrich at gmail.com
Phone 360.736.7563
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Brent
Fischer
Sent: Monday, November 29, 2010 11:11 AM
To: caut at ptg.org
Subject: Re: [CAUT] Teflon Bushings
and knuckles last how long?
--- On Mon, 11/29/10, Delwin D Fandrich <del at fandrichpiano.com> wrote:
From: Delwin D Fandrich <del at fandrichpiano.com>
Subject: Re: [CAUT] Teflon Bushings
To: caut at ptg.org
Date: Monday, November 29, 2010, 8:19 AM
So, please explain all those Steinway actions with Teflon bushings that,
once the pins and bushings were properly installed and mated, have gone on
working flawlessly for some three decades now.
I understand about the hole in the wood and occasionally it could be a
problem. But not nearly as often as was claimed by some. It was also a
problem that could easily be fixed.
ddf
Delwin D Fandrich
Piano Design & Fabrication
620 South Tower Avenue
Centralia, Washington 98531 USA
del at fandrichpiano.com
ddfandrich at gmail.com
Phone 360.736.7563
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Brent
Fischer
Sent: Monday, November 29, 2010 6:16 AM
To: caut at ptg.org
Subject: Re: [CAUT] Teflon Bushings
Del,
With all due respect, give credit to Steinway. Basically the quote
from the WNG site on what went wrong. Along with " a hole in wood
is circular only at the EMC which it is drilled at." Therefore,
I agree for contact stiffness the hard bushing for the shank flange
makes all the sense , anywhere else in the action, just get rid of it
or make teflon beaded necklaces.
Brent
---
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