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 --- -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20101129/f617eaff/attachment.htm>
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