>Move the dowel/capstan around until you achieve the balance weight you want. I have to disagree with this statement. KR is optimally derived by regulation parameters not weight. With a given knuckle radius, hammer bore, hammer blow and key dip; there is a KR which lifts the wippen through optimal distance. That is, to have the jack in close proximity to the knuckle at full dip and not pressed into the rep. stop felt or bobbling on the knuckle. Once ideal regulation specs are configured, you can manipulate FW to target BW. One would get a really low KR if one were to establish BW via KR with a heavy SW. Once you get the mechanism operating properly and the BW is too high, consider lowering SW, increasing FW or installing wippen assist springs. Finessing weight is the polish, attending to the mechanics is the foundation. When I set up for new parts, key dip is known, hammer bore is known, blow distance is known. I select a knuckle radius and KR which produces the lowest friction and BW while producing an optimum regulation, it is a bit of a juggling act but a decision can be made by making regulation a priority. Once the parts are installed and the action regulated, it's time to fine tune the BW. Hammer weight selection should be more of a consideration in BW than KR. -- Regards, Jon Page -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060719/0287efce/attachment.html
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