> Wed, 25 Aug 2010 13:56:40 -0400 "Paul Milesi, RPT" <paul at pmpiano.com> wrote: > > Thanks, Israel. Interesting info. > > BTW, this piano I?m working on is D #420394 (1971). The D you said you have > data on (#418477) is very close in vintage, and the data therefore might > prove interesting when compared. > Well, Paul, I am afraid that the comparison isn't going to be quite that close. After looking at my notes more carefully, it turned out that this steinway D is really serial #376678 - 1962. So I don't know how it compares to your 1971. Also, apparently we did get funding for all new action parts on that piano (it being a "D") so the data is on all new parts - we were trying to select the best wippen/shank combination (using the Renner parts kit). So here is the data, for what it's worth, on Key # 27. With straight heel wippen: Knuckle DW UW Friction Approximate keydip position at 1 7/8" strike distance 16.5 mm 51 g. 24 g. 13.5 g. .390" 17 mm 50 g. 22 g. 14 g. .390" 16 mm (didn't bother - can't regulate properly - jack jams into rep lever before sufficient aftertouch is achieved) With angled heel wippen: Knuckle DW UW Friction Approximate keydip position at 1 7/8" strike distance 16.5 mm 55 g. 31 g. 12 g. .420" 17 mm 50 g. 22 g. 14 g. .420" 16 mm 59 g. 26 g. 16.5 g. .420" (jack jamming into rep lever...) The Steinway M data isn't very useful - we were trying out various used wippens from donated sets, guessing at their origin... Israel Stein
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