This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment As 'ol Arthur said on page 25. "Lost Motion compensators were sometimes used on the stickers. In the regular verticl action, when the soft pedal is depressed, pushing the hammer rail and hammers halfway toward the strings, a space or lost motion is introduced between the jack and the hammer butt. The lost motion compensator makes use of the leverage to eliminate lost motion when the hammer rail goes up, allowing the pianist to play more softly by decreasing hammer travel distance, while at the same time giving the keys control over the hammers through their full stroke. The compensator mechanism was used only on expensive uprights made in the early 1900's, and it greatly enhanced the soft playing capabilities of the upright piano. Unfortunately, as manufacturers sought to reduce their costs, this complicated device was the first to go." The one on my piano has joints in the sticker that rotate as the key is pressed. This joint his the lost motion compensator bar that runs across the front of all the stickers. This bar is connect by rods to the hammer rail. When the soft pedal is pressed the rail naturally moves closer to the strings, and this raises the bar of the lost motion compensator which moves the joints on the stickers, thus moving the jack closer to the hammer butt as well as the hammers moving closer to the strings. Hard to put explain in print but maybe you can imagine what I'm trying to say. Joey -----Original Message----- From: Michael Gamble [mailto:michael@gambles.fsnet.co.uk] Sent: Tuesday, December 16, 2003 7:25 PM To: joey@onkeypianotuning.com; Pianotech Subject: Re: Lost Motion Compensator & Regulation Hello Joey Recker What's a "lost motion compensator"? Is it a dolly-top? a "touch screw"? Any way is it a means of getting rid of the lost motion between the keys and the action? If so, then (assuming the key dip is regulated and keys are even) adjusting (or regulating) the "touch" is where you start. Then follow ol' Arthur as you said. Regards Michael G (UK) ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/79/1e/6f/ff/attachment.htm ---------------------- multipart/alternative attachment--
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