here is #3 -------------------------------------------------- From: "David Ilvedson" <ilvey at sbcglobal.net> Sent: Thursday, July 30, 2009 1:39 PM To: <pianotech at ptg.org> Subject: Re: [pianotech] regulating backchecks? > Al, > > Sounds like a good set-up...maybe a photo or two? > > David Ilvedson, RPT > Pacifica, CA 94044 > > ----- Original message ---------------------------------------- > From: "Al Guecia/AlliedPianoCraft" <AlliedPianoCraft at hotmail.com> > To: ed440 at mindspring.com; pianotech at ptg.org > Received: 7/30/2009 4:10:40 AM > Subject: Re: [pianotech] regulating backchecks? > > >>I installed 5 glide bolts upside down (similar to some Baldwin grands) on >>the front of my bench (which is a Steinway B keybed) and use them to make >>the adjustments. The way I set them up is to use action springs to hold >>the >>action firm to the bench, then I raise and lower the front glides in the >>bench by checking the center glides as you do when bedding the action, >>making adjustment to the front glides bolts 'til you get it right. Then I >>check the key dip to be sure it's correct. Works great. I don't need to >>make >>many adjustments in the piano after that. > >>Al G > > > >>-------------------------------------------------- >>From: "Ed Sutton" <ed440 at mindspring.com> >>Sent: Wednesday, July 29, 2009 7:56 PM >>To: <pianotech at ptg.org> >>Subject: Re: [pianotech] regulating backchecks? > >>> If you're taking the action home: >>> >>> 1) Bed the action in the piano >>> >>> 2) In the piano, remove four front key wool punchings, at the ends and >>> middle of keyboard, and replace with cardboard punchings to make >>> unambiguous match to the dip block. >>> >>> 3) Put the action on your bench, mark the location with clamp blocks or >>> tape, shim with index cards until the measured keys match the dip block >>> again. >>> >>> 4) Tape the cards to the bench top. >>> >>> es >>> ----- Original Message ----- >>> From: "David Andersen" <david at davidandersenpianos.com> >>> To: <pianotech at ptg.org> >>> Sent: Wednesday, July 29, 2009 5:54 PM >>> Subject: Re: [pianotech] regulating backchecks? >>> >>> >>>> >>>> On Jul 29, 2009, at 11:07 AM, jim ialeggio wrote: >>>> >>>>> What I really want is a reliable protocol to prove that the bench top >>>>> keybed is precisely matching the piano's keybed. >>>>> >>>>> Any ideas out there? >>>> >>>> I'm continually surprised more technicians don't make use of the two >>>> simple ways I've found to recreate exact key travel outside the piano: >>>> >>>> ---get real good at using a dip block (I use a hardwood 10mm) then >>>> either >>>> >>>> 1. get an Edwards Action Trolley and recreate exact key travel by its >>>> method...excellent and precise; or >>>> >>>> 2. when the action is in your lap, put a cheekblock face down on one >>>> knee under the balance rail and oonch around, move that leg, until you >>>> find the point where the key travel becomes exactly what it was in the >>>> keybed. Doing it will show you what I mean, and either protocol will >>>> create a sharp rise in your regulation precision and get you real, >>>> real >>>> friendly with your dip block. >>>> >>>> David Andersen >>>> >>>> >>>> >>>> >>> >>> > -------------- next part -------------- A non-text attachment was scrubbed... Name: Workbench3.JPG Type: image/jpeg Size: 311388 bytes Desc: not available URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090730/4e4d9b42/attachment-0001.jpeg>
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