Scott, I'm sure you have turned down your drop screws? David I. ----- Original message ----------------------------------------> From: Scott Helms <tuner@helmsmusic.net> To: <pianotech@ptg.org> Received: Wed, 15 Dec 2004 12:28:11 -0500 (EST) Subject: grand action problem >Hello - >I am regulating a 1984 6'9" Schimmel grand. It has a Renner action, and >the letoff buttons are the wooden dowel type which screw directly into the >underside of the hammer rail. My problem is that I can't get letoff close >enough to the string. The closest I can get it is about 7 mm, and that's >if the dowel is screwed all the way up against the bottom of the hammer >rail. I've checked and double-checked all of my string height >measurements, and it just won't work. I've only regulated about 10 or 15 >actions, so I'm still learning, but the only way I can see to get the >buttons up higher would be to shim the entire hammer rail so it sits >higher than the action brackets would indicate it should. There's plenty >of room under the pinblock to take it as high as I need to, but I'm not >sure that this is the proper fix for the problem. I'm afraid a change in >hammer flange height might create checking problems or other regulation >issues. I probably would only need to raise the rail a few millimeters to >get the letoff I need, but why would this piano have come out of the >factory with such a huge geometry problem? Am I missing something? Is this >one of those "action spread problems" that I've heard about in Technical >Institute classes? >-- >Scott A. Helms, RPT >Helms Music Enterprises >(269) 381-4521 >www.helmsmusic.net >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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