RIc Thanks , you said it better than I do. I concur with your reg parameters as well. Not much wiggle room. One of the first things we do is regulate & an existing note in pre tear down. Huge clues about action ratio & parts/capstan use are gained in 5 minutes. I also use spurlocks simple but elegant action ration finder as listed in his web site. Every tech should have one. 2 minutes & you know your action ratio quite closely. Cheers Dale Whenever you find short dip & long blow the action ratio is high" If you stop and think about this for a second its perhaps not so trivial as it at first may seem. Dip and blow, along with letoff and aftertouch are critical determinants in getting an action to feel and respond acceptable. And there is not one heck of a lot of manuvering room really before things get weirded out. Personally, I opt for keeping dip between 9.8 and 10.2, blow at 46-47 and letoff between 1.5-2.5 mm graduated from the bass and aftertouch on the light side.. With these in mind it doesnt take much thought to realize that in order to keep these in line you dont have all that much manuvering room. Assuming we take balance rail pin positions as given... you have basically knuckle size and placement and capstan position to effect changes with. -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20061126/27d9dd43/attachment.html
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