The capstan/fulcrum is on top of a piece of cloth and would seem to wear a lot quicker? Maybe not...as it is sort of rolling, like an upside down accelerated system...fine threads on adjustment screw? Did you try to adjust a key? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: wimblees at aol.com To: Pianotech at PTG.org Received: 3/6/2010 3:21:32 PM Subject: [pianotech] key leveling system >This morning I tuned a 1924 Ludwig grand with a key leveling system I had never >seen before. In each key, in front of the balance rail hole and pin is a screw that >goes through the key. (see picture #1). The other on of this screw is like a capstan >screw, which rests on a felt rail, which is the fulcrum of the key. (#2 and #3). The >balance rail is used only to keep it from wobbling from side to side. The key height is >adjusted using this screw. >I've never seen a system like this. It's actually quite ingenious, and wonder why it >was not accepted by other manufacturers. It did not feel any difference in how the >piano played. >Willem (Wim) Blees, RPT >Piano Tuner/Technician >94-505 Kealakaa Str. >Mililani, Oahu, HI 96789 >808-349-2943 >www.Bleespiano.com >Author of: >The Business of Piano Tuning >available from Potter Press >www.pianotuning.com
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