This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Thanks Roger and everyone else who responded. Would it not be easier to = remove the springs and then accurately weight the keys.I will go back = into my shop and play around with the springs and key weights.=20 Jack Houweling ----- Original Message -----=20 From: Roger Jolly=20 To: Pianotech=20 Sent: Thursday, April 28, 2005 10:15 PM Subject: Re: wippen support springs Hi Jack, Samick is using them in the Renner action/ Knabe = line of pianos, 3 different thickness of spring across the key board. = .7mm, .6mm, .5mm. You will hear passionate arguments for and = against. The keyboard should be weighted off at 67gms tapered to 60gms = at the end of the spring section, with the springs disconnected. = Springs are the connected, and touch weight adjusted from 54gms in bass = to 48gms extreme treble. I will be going to Korea next week to set up new touch weight = parameters. I like the lowering of mass. and the increase in up weight, from the = use of springs. Springs should not support any more than 15gms of down = weight in the bass and 8-10 gms in the treble. As for making weighting more difficult. I feel you can get very = even weighting, and use a pre mapped or CNC weight off pattern, the = springs are simple to adjust once you get the hang of it. Springs have been used in the past to hide a multitude of sins at the = factory level. Fudging geometry and friction problems. When used = correctly, I love them. Regards Roger=20 Technical Consultant Samick Music Corp.=20 At 09:36 PM 4/27/2005, you wrote: I would like to know some things about wippen support springs. Who = uses them? Do companies still continue to use them? Should they be = removed? I know they make key weighting difficult.=20 =20 Jack Houweling =20 =20 -------------------------------------------------------------------------= ----- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.10.4 - Release Date: 4/27/2005 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/b4/22/17/30/attachment.htm ---------------------- multipart/alternative attachment--
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