This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment "B" at note 62 in NYC hammer flange 5 3/4" rep flange 3 1/4" based on string height of 7 1/2" you didn't say if = pre 84 or post or the new incarnation but the spread pre 84 was 4.381" = and post 84 was 4.395" This may have changed on the latest and greatest = and for that I suggest you call Kent Webb or email him. I think it is = important to note that according to Mike Mohr's Forefinishing Notes, = which I consider a reliable source, "Set Action Frame Height" says = "IMPORTANT NOTE: the action stack height, as determined by the thickness = of the mounting blocks. This action height is unique for each = instrument, and is the result of the individual string height for a = piano. String height variables are the result of the plate fitting and = belly operations... String heights change from bass to treble usually in = an arched or crowned manner. These numbers for note # 62 represent an = average. Maintaining the relationship between the stack height and the = string height ensures: A) the proper BLOW distance at the same time the = hammershank is properly off the cushion. and B) the proper HAMMER = ROTATION is needed to minimize overstriking or shallow striking = conditon. NOTE; if string height is lower or higher than above, keep the = relationship the same..." (and later after shimming or planing the bass = and treble mounting blocks) "continually check for straightness with the = straightedge on top of the hammershank flanges." I know you only asked = for numbers, but what the heck, I felt like sharing. BTW I'm sure you = remember that we discovered when shimming or planning it is best to = rotate the stack on the hammer flange pin axis which means adjusting the = front foot differently than the back foot. Of course there are even = greater subtleties to this process but then you did just ask for the = numbers. Stay well, Chris Solliday =20 ----- Original Message -----=20 From: Wolfley, Eric (wolfleel)=20 To: 'caut@ptg.org'=20 Sent: Tuesday, July 19, 2005 9:53 AM Subject: [CAUT] Steinway stack height Hi All, I'm sure somebody out there knows the specs for the distance from the = keybed to hammerflange center and keybed to wippen center for a Steinway = B. I have these written down somewhere but can't find them and I don't = trust my memory. I'm correcting a problematic action and believe the = stack to be too high since to get the proper blow distance the shank = cushions have been reduced to nubs. The bore distance of the hammers is = correct and the string heights are in the normal range. Thanks! Eric Wolfley, RPT Supervising Piano Technician College-Conservatory of Music University of Cincinnati ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/90/26/41/29/attachment.htm ---------------------- multipart/alternative attachment--
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