Steinway key humping

[Cy Shuster]

Yes.  After I thought about how short the distance is that the action moves
sideways, I realized it was insignificant.  If you were sliding it a foot,
then maybe there'd be some wood-to-wood contact if it weren't a perfect arc,
but for 1/3 of a hammer width, the glide bolts should do the job.

--Cy Shuster--
Rochester, MN

----- Original Message ----- 
From: "Michael Gamble" <michael@gambles.fsnet.co.uk>
To: <pianotech@ptg.org>
Sent: Monday, October 20, 2003 9:29 AM
Subject: Fw: Steinway key humping


> Hello Cy
> The S&S has these inverted mushrooms growing thru' the keyframe. This
> minimises the friction. Agree?
> Regards
> Michael G (UK)
> ----- Original Message ----- 
> From: "Cy Shuster" <741662027@charter.net>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Monday, October 20, 2003 4:00 AM
> Subject: Re: Steinway key humping
>
>
> >
> > ----- Original Message ----- 
> > From: "Carl Meyer" <cmpiano@comcast.net>
> > To: <pianotech@ptg.org>
> > Sent: Sunday, October 19, 2003 7:57 PM
> > Subject: Steinway key humping
> >
> >
> > > I recall when I first heard that, I was impressed with that concept.
I
> > have
> > > been now convinced that to misadjust to compensate for wear is not a
> > logical
> > > engineering decision.
> >
> > Thank you, Carl.  It makes no engineering sense to me, either.  Why not
> > adjust letoff closer in the middle to adjust for hammer felt wear, etc.
> etc.
> > etc.?
> >
> > Is it the actual keybed that's crowned in Steinways?  Doesn't that add
> > friction to una corda shifting, or is it an arc of a circle and stay in
> > contact the whole way during a shift?
> >
> > And if you do put a 2mm crown in the center, over how many keys do you
> > spread it out: an octave centered on middle C, perhaps?  Two octaves?
> >
> > --Cy Shuster--
> > Rochester, MN
> >
> >
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> >
>
>
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