[pianotech] Friday puzzler: Won't play on hard blow

[Terry Farrell]

I'm trying to visualize this. Are you saying that the wippen was not  
loose, but was so misaligned with the capstan that it would catch the  
edge of the wippen heel on a soft blow, but on a hard blow it would  
cheat past and slide up the side of the heel? Was it a combination of  
misaligned wippen AND capstan (maybe capstan at a bit of a side angle  
and/or key warped - maybe the entire section of the stack is offset a  
bit from the keyset and this one key was worse than the rest? I just  
haven't seen quite that yet. Can you provide the details of how this  
would happen?

Thanks!

Terry Farrell

On Oct 30, 2010, at 10:00 AM, reggaepass at aol.com wrote:

> ... and the prize goes to both Gordon Large and Ed Foote (on the  
> CAUT list) who, within minutes of each other, came up with the right  
> answer: The capstan is moving out from under the wippen heel.  In  
> this case, it is the displaced wippen that is contacting the  
> adjacent wippen, causing its hammer to nudge.
>
> Thanks to all who contributed to this thread.
>
> Alan E.
>
> -----Original Message-----
> From: Ed Foote <a440a at aol.com>
> To: caut <caut at ptg.org>
> Sent: Fri, Oct 29, 2010 3:56 pm
> Subject: Re: [CAUT] Friday puzzler: Won't play on hard blow
>
> Is the capstan moving out from under the whippen and hitting the  
> adjacent one?
>
> Ed Foote RPT
> http://www.uk-piano.org/edfoote/index.html
>
>

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