If that were the case, wouldn't a small strip of action cloth to build up the wippen cushion achieve the same goal without having to change the knuckle? David Love www.davidlovepianos.com From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ed Foote Sent: Wednesday, March 17, 2010 4:35 AM To: pianotech at ptg.org Subject: Re: [pianotech] Action inertia FW versus SW Once the stroke is initiated the action accelerates with not enough control and the pianist gets a feeling of being disconnected from the keys. The pianist feels that he loses control and a sense of weight through the stroke. Also, because this fly-away issue controlling pianissimo playing is difficult and must be done with the utmost caution in arm weight (I can tell this myself as a player). I would take a close look at the "magic line", and see if perhaps the capstan contact patch is moving through the line very early. If so, you have a decreasing action ration from almost the start. A larger knuckle will move the crossing point lower, possibly restoring a bit of control on ppp. If capstan placment on the new keys is too close to the balance rail, there may also be a slowing down of the action due to FW getting the upper hand with the leverage. Regards, Ed Foote RPT http://www.uk-piano.org/edfoote/index.html -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100317/b41c9ffe/attachment.htm>
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