> When you straighten up those hammers, are you going to realign the whippens > and the back checks to match the new hammer/string alignment? That's the plan - I don't think they will be moving very much. > What's that do > to the capstan/whippen alignment? Don't know, but will find out. Again, I don't think things will be moving all that much. > Are the hammers mated to the strings now? I'll be visiting the piano with the action tomorrow to do some alignment and bed the keyframe to the keybed - couldn't do any of that too well last time with the stack jammed into the pinblock - although, come to think of it, the keyframe did seem to be in very good contact with the keybed! ;-) Thanks for the hammer shank tip - that's what I was looking for. Terry Farrell ----- Original Message ----- From: "Keith Roberts" <kpiano@goldrush.com> To: "Pianotech" <pianotech@ptg.org> Sent: Friday, June 27, 2003 5:47 PM Subject: Re: Regulating Rack Trouble (Korean Piano Rant) > YC doesn't pay you to fix that. Just the 6 to 7 hours it takes to bring the > regulation up to good or where it would have been after 13 years. I opted to > bring it up to good, it didn't take much longer. > When you straighten up those hammers, are you going to realign the whippens > and the back checks to match the new hammer/string alignment? What's that do > to the capstan/whippen alignment? Are the hammers mated to the strings now? > The YC hammers that were pulled in the shop just last week, didn't come off > pretty. If you have to straighten them, burn them or heat gun the shanks. > Keith Roberts > > ----- Original Message ----- > From: "Farrell" <mfarrel2@tampabay.rr.com> > To: <pianotech@ptg.org> > Sent: Friday, June 27, 2003 1:08 PM > Subject: Regulating Rack Trouble (Korean Piano Rant) > > > > Working on this Young Chang action, I discovered a flaw with the Spurlock > let-off rack/tool. I would adjust let-off of a couple section-end hammers, > install the let-off rack, and then I could not get the shanks to click on > the rack similar amounts. The problem with the rack is that is assumes > consistent hammer boring. What apparently is needed is a zig-zag shaped rack > that will accommodate hammers bored at varying positions. > > > > Tip to tail boring varies easily by 2 mm on neighboring hammers. And then > most (but of course, not all) of the hammers in the treble section were > installed with about a 2-degree treble lean. I don't yank hammers off newer > piano very often - will these come off cleanly with a Schaff-type hammer > puller so that I can straighten them? Is the Renner hammer puller > significantly better? > > > > I thought YC had this kind of garbage worked out by 1990? > > > > Terry Farrell > > > > _______________________________________________ > > pianotech list info: https://www.moypiano.com/resources/#archives > > > > > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
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