This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Regulating 3-4 samples is good practice on any regulation, and doesn't = take but a few minutes. It will show the level of consistency in the = action, and will make sure you have workable regulating choices.=20 1 11/16 to 1 7/8 will work, and even 1 11/16 will give ample power for = most players, so the first place to look is a blow that will require a = dip of around .390-.420. Another clue can be had from the engagement of = the jack and the butt. The leather that the jack pushes on should be = approximately perpendicular to the jack, when at rest. That allows the = jack to slip back under with a minimum of lost motion.=20 If, on a very slow release of the key, the jack requires more than a = tiny bit of lost motion to get back under the butt, either the blow is = longer than optimal for those parts, or the hammers are too long. Either = will force the butt back too far, creating a "cavity" under the butt = that won't let the jack by without too much lost motion. The action will = still work, but this is a clue that it is not set up as designed. Too = many words, but I'm trying to make sure the description is clear. If the leather is the other way from perpendicular, and the dip is = shallow, you are wasting power. Bob Davis=20 Bob How does back checking figure into your method? Paul C ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/f6/bc/7d/b1/attachment.htm ---------------------- multipart/alternative attachment--
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