What year is the piano? The bore may not have been right to begin with--wouldn't be the first time. Check the string height, flange center pin to key bed and bore dimension to see how far off you are. Since the jack /knuckle line is askew it's possible that replacement parts were put on that don't really work that well--or that 17 mm knuckles were added to an action originally set up for 16 mm and the original wippens were maintained--I see that a lot. Without replacing parts and reconfiguring, anything you do is probably a compromise. You might be able to get away with increasing the spread by shimming out the wippen flanges and raising the stack. You'll need to do some experimenting. David Love davidlovepianos at comcast.net www.davidlovepianos.com -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Andrew and Rebeca Anderson Sent: Monday, October 09, 2006 6:44 AM To: Pianotech List Subject: S&S D with high strings/low action stack Fellow techs, I just finished a rough (last minute hurried) regulation on S&S D for the university here on the eve of a concert. The hammers got a very light filing for the first time (I suspect). They appear to be over-striking. The drop screws were backed right up against the hammer shanks and I need more. The angle from the jack to the knuckles is not great looking either (bent line to knuckle spline). After first having bedded the center rail of the key-frame (it was floating) I then re-levelled the keys. There is not a whole lot of extra room to the fall-board. There is a lot of room between the hammer shanks and the tuning pin-block. You can probably see where I'm going with this and I'm not crazy about changing checking. I'm going back to get some actual measurements to assess the best way to retrieve this four-your-old piano. They're so pleased with the results so far that they think they will afford to have it done right. What measurements should I take to decide what remedial work should be done to place this action in a better relationship to the strings. Indeed, what are the proper dimensions of Steinway hammers (maybe someone hacked these down too much) and usual bore distances? Andrew Anderson
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