Regulating Rack Trouble (Korean Piano Rant)

[Farrell]

> 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
> >
> >
> 
> 
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