This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Hi, Add to that the dimples in the hammer rest rail cloth being very uneven. Joe Goss RPT Mother Goose Tools imatunr@srvinet.com www.mothergoosetools.com ----- Original Message -----=20 From: Dean May=20 To: 'An open list for piano technicians'=20 Sent: Friday, January 13, 2006 8:19 AM Subject: RE: Upright let-off jig Sounds like a great plan for a newer piano without a lot of wear. What = I have found, though, when working on older pianos what haven't been = regulated forever is that there are dimples worn in the letoff buttons. = On such pianos I will only turn the letoff screws in 180 degree = increments, preferably 360 degree increments unless I know I can be back = for follow up adjustments. If you stop some place in between then the = heel of the jack is rubbing on a high spot and you'll end up with = hammers blocking when you come back the next year.=20 =20 By limiting adjustments to 180 degree turns it is difficult to set the = hammers to just wink uniformly off a set up as Dave describes.=20 =20 Dean Dean May cell 812.239.3359 PianoRebuilders.com 812.235.5272 Terre Haute IN 47802 =20 -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On = Behalf Of Piannaman@aol.com Sent: Thursday, January 12, 2006 11:26 PM To: pianotech@ptg.org Subject: Upright let-off jig =20 I'm sure someone's thought of this before, so forgive me if my idea is = unoriginal! =20 For those of you who use Bill Spurlock's grand letoff jig, this should = sound familiar. Every upright has a built in let-off jig: the hammer = rail. Today I was playing with a Hallet-Davis (Pearl River version) = that's about 3 years old. It needed let-off regulation in a bad way, so = I experimented with the hammer rest rail. On this particular piano, I = could push it far enough forward so the hammers were close to the = strings, even ON the strings. Some pianos won't allow for that much = movement, but this one did. =20 =20 I set a some samples for letoff, then pushed the rail forward to the = point where those hammers would wink when I depressed the key. I = blocked the rail so it stayed there, then adjusted the let-off to make = the hammers wink. Worked like a charm. =20 =20 Pianos that won't allow for such free motion of the hammer rail may = require something to clamp onto the rail for the shanks to rest on--the = Spurlock jig comes immediately to mind. =20 Hope this helps someone in some small way! =20 Dave Stahl Dave Stahl Piano Service 650-224-3560 http://dstahlpiano.net/ ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/af/78/88/c0/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC