Were both of these measurements taken when the key was halfway through its travel? This line intersection should happen at the halfway point. David M. Porritt, RPT SMU - Dallas On Thu, 22 Jun 1995 Kam544@aol.com wrote: > Back on Tuesday I (Keith A. McGavern) asked: > ----------- > "Will someone please re-educate me as to the method of placing a string or > thread from the hammer flange center to some other action part to determine > appropiate alignments?" > ----------- > > Since that time I have received basically two concepts: > > Concept 1) If a straight line were drawn between the wippen flange center pin > and the bottom of the key at the balance point, the place where the capstan > and wippen heel cushion contact each other will pass through that straight > line. > > Concept 2) If a straight line were drawn between the wippen flange center pin > and the hammer flange center pin, the place where the knuckle and the jack > tip contact each other will pass through that straight line. > > Five pianos were used to test these concepts: > Baldwin Concert Grand, #91497, 1941 > Steinway Grand D, #400653, 1967 > Steinway Grand D, #382123, 1963 > Steinway Grand M, #379569, 1962 > Yamaha Grand C3, #F5333137, 1994 > > Concept 1) works proves true. > Concept 2) does not prove true. > > Concerning Concept 2): Of the five pianos Yamaha was closest, Baldwin next, > then Steinway (not even close). Can someone shed some light on Number 2) > please? > > Keith A. McGavern, RPT > Oklahoma Chapter
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