Kevin, Me too. Dan on 9/10/01 9:53 AM, Kevin E. Ramsey at ramsey@extremezone.com wrote: > Hello, Dan. I agree, the rep lever gets taken out of the equation once > it contacts the drop screw; hence the term "double escapement". It's my > understanding of it that the jack should begin escaping at the same time > that the drop screw contacts the balancier. > However, I wonder really how much of a contribution the rep lever makes > to the movement of the hammer anyway; not much I would think, given the > relatively weak condition of the spring compared to the accelerating force. > Interesting to think about it, anyway. > Usually, when I see too much drop on a new piano, it's because there is > just too much aftertouch in the action, and the people at the factory put > that much drop into it so that the hammer can't rise up so high in the > aftertouch phase to block against the string. Easier than putting in more > punchings, y'know. > > > ----- Original Message ----- > From: "thepianoarts" <thepianoarts@home.com> > To: <pianotech@ptg.org> > Sent: Sunday, September 09, 2001 10:50 PM > Subject: Re: Shigeru Kawai regulation > > >> Hello Kevin, >> >> This is a great area for study, yes? >> Do you agree that the rep lever is not involved in lifting the knuckle/ >> hammer after the drop screw contacts the rep lever? >> Dan >> >> >> >> on 9/9/01 10:32 PM, Kevin E. Ramsey at ramsey@extremezone.com wrote: >>> SNIP "What happens if the rep lever contacts the drop >>> screw too soon? Then the jack continues to lift the knuckle further up > all >>> by its self, resulting in a draggy feeling at the end of the key > stroke." >>> >>> ----- Original Message ----- >>> From: "thepianoarts" <thepianoarts@home.com> >>> To: <pianotech@ptg.org> >>> Sent: Saturday, September 08, 2001 9:36 PM >>> Subject: Shigeru Kawai regulation >>> >>> >>>> >>>> The technicians in the Dallas/ Ft.Worth Texas part of the world were >>>> treated to a technical this past week, on the refinments of the Shigeru >>>> Kawai, their preimer piano line. The technician who follows a > particular >>>> instrument through the facory, also goes to the new owners home to > service >>>> it. I guess that is a one time deal, since all the techs are coming > from >>>> Japan. Very impressive. Any other manufactures doing that? I love it > when >>>> someone raises the bar. >>>> >>>> There are a couple of regulation differences that are interesting. >>>> #1-Drop is set slightly early, and #2- jack height to rep lever height > is >>>> set so that there is no winking. The distance (jack height to rep lever >>>> top) is subtle, so as not to cause a hammer line wave. >>>> I beleive the reasoning for the earlier than usual drop, is that there >>>> is a smoother feel if drop and let-off are spaced slightly. >>>> Also, I beleive their thinking is, an earlier drop allows a safety >>> net >>>> which insures a positive 'scrape' or contact by the jack, which would > be >>>> reduced if the drop timing is later that the let-off timing. In other >>>> words, let the jack do it's job of lifting the hammer. Keep the spring >>>> loaded rep lever out of the picture. >>>> >>>> Dan >>>> >>>> >>> >
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