Nice picture John I have relocated many sets of knuckles with a simple jig built by Roland Kaplan (San Jose chapter). Its a great way to make use of basically new parts and achieve proper leverage at the same time and without starting over. With the cost of new German or Japanese Shanks and flanges altering them to conform to your spec. is both frugal and acceptable in my opinion. You are having too much fun. But really..... its very satisfying to make a silk purse from a sows ear. Dale S. Erwin www.Erwinspiano.com Custom piano restoration Ronsen piano hammers-sales R & D and tech support Sitka soundboard panels 209-577-8397 209-985-0990 -----Original Message----- From: Jon Page <jonpage at comcast.net> To: caut at ptg.org Sent: Fri, Nov 26, 2010 8:01 am Subject: Re: [CAUT] Teflon Bushings Roger & Ed, thanks for the encouragement. Here's a photo of the relocated knuckle and reinforced yoke. This is a 1971 L donated to the Cape Cod Conservatory. Heavy action, high friction readings but no binding components. Moving the knuckle should drop the friction to a reasonable level. The original knuckles were 11mm wide. This produced excessive after touch and a drop screw head buried into the flange. I'm confident the knuckle relocation and size reduction will bring the action around to a manageable regulation. One argument to be made for not replacing the shanks is that these are seasoned, new ones would travel and twist in the coming years. I think Teflon bushing are Ok, it's the unstable wood around them that causes the problems. Now on to graduating their weight and repinning. I'll also be installing underlever assist springs and replacing the single string felts. Fun & Games. -- Regards, Jon Page -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20101126/44d53cb0/attachment.htm>
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