Instructive Challenge of the Day

[Alan]

Wippen wire wobble wasn't witnessed when wanging, while
Catcher couldn't keep close contact, causing crappy coupling.  

Please see answer posted earlier.

And, BTW, what WOULD you use to reglue a wire in wood? I'd probably go for a
drop of epoxy ...

Alan R. Barnard
Unleashing Happy Torrents of Alliterative Consonance from Salem, MO


-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf
Of Greg Newell
Sent: Monday, March 21, 2005 2:54 PM
To: Pianotech
Subject: Re: Instructive Challenge of the Day


Alan,
         What kind of glue did you use to secure the backcheck wire into 
the wippen?

Greg Newell




At 12:57 PM 3/21/2005, you wrote:
>Upright 1890 Kranich & Bach, in very good condition after much work, 
>had a
>treble hammer that bobbled a bit.
>
>Checked regulation points, all similar to its neighbors which worked 
>fine.
>Held the left pedal down a bit; didn't help. Tried the key with fewer 
>front rail punchings; no help.
>
>Realized the hammer wasn't checking at all. Tried adjusting backcheck;
>hammer would not check in any position! Made double-sure backcheck was 
>aligned squarely to catcher and that felt and leather were good--same as 
>neighboring notes.
>
>Hmmm.
>
>Perfectly squaring and aligning the backcheck was what led to the 
>proper
>diagnosis (hint) but did not improve checking at all. Repair took a about 
>30 seconds and did not require turning any screws or any regulating. In 
>fact, I used no tools at all. Hammer now checks perfectly, wherever I want 
>to adjust it.
>
>Age of piano is a hint, although the problem had nothing to do with the
>brand of the piano or it's action design which is very "modern," at least 
>as far as wippens, hammers, and butts go (but don't get me started on it's 
>rocker capstans and short, secondary stickers that are attached with 
>screws to the capstans). The point is, this problem could occur in ANY 
>upright but is more likely in an old one.
>
>No purchase required to enter.
>
>Alan R. Barnard
>Sendin' Out Stumpers From Salem, MO
>
>
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Greg Newell
Greg's piano Forté
mailto:gnewell@ameritech.net 


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