[CAUT] Oh WimBlees, you isn't off da hook!

[Robin Blankenship]

Wim,

Any possibility that the hardness of the knuckle could contribute a bit to 
the bounce???

Robin Blankenship


----- Original Message ----- 
From: "Willem Blees" <wblees at bama.ua.edu>
To: "College and University Technicians" <caut at ptg.org>
Sent: Monday, December 11, 2006 10:13 AM
Subject: Re: [CAUT] Oh WimBlees, you isn't off da hook!


> David
>
> Thanks for reminding me. Because of some scheduling conflicts, I'm
> working on it this Friday afternoon.
>
> But in addition to doing the wippens on the Concert Hall Steinway,
> I've been looking at other grand pianos, and found that most of them
> have bobbling hammers, to some extent. I think this summer I will
> spend a considerable amount of time evaluating and correcting wippens.
>
> During the first part of this thread, someone wrote a list of all the
> possible reasons a hammer could bobble. Whoever that was, could you
> post it again. The information could make for a nice article.
>
> Assuming the regulation is correct, one of the problems with making
> the "perfect" adjustment to the wippen is that there are too many
> variables which are almost impossible to measure. For instance, the
> touch. How soft can we hit the key and expect the hammer to check.
> Then there is the curvature and roughness of the hammer tail and the
> rake and roughness of the back check. The strength of the spring, and
> the condition of the spring groove can also have an impact. The only
> thing we have control over is the gram resistance of the balancier.
>
> Am I missing anything?
>
> Wim
>
>
> Quoting David Skolnik <davidskolnik at optonline.net>:
>
>> Hey Wim -
>> Just a friendly reminder.  Have you had a chance to look at the piano
>> yet?
>>
>> David Skolnik
>>
>>
>>
>> At 08:58 AM 11/15/2006, you wrote:
>> >Since this thread got started with wippens, I want to report that I
>> am
>> >not going to be able to do the work on the balanciers on the D
>> until
>> >Dec. 7. I will give a report once I'm done.
>>
>>
>
>
> Willem Blees, RPT
> Piano Tuner/Technician
> School of Music
> University of Alabama
> Tuscaloosa, AL USA
>