key leveling -- crown?

[antares]

No, it is because the soundboard is arched too.




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from

Antares,

Amsterdam, Holland

"where music is, no harm can be"

visit my website at :  http://www.concertpianoservice.nl/


> From: "Isaac OLEG SIMANOT" <oleg-i@wanadoo.fr>
> Reply-To: pianotech@ptg.org
> Date: Sat, 17 Nov 2001 20:35:44 +0100
> To: <pianotech@ptg.org>
> Subject: RE: key leveling -- crown?
> 
> Not only Steinway consider good new keyboard leveling will show a little
> arch in the middle.
> Klaus Schimmel does too, so Seiler, so other German makers, and their key
> bed is not arched.
> 
> In fact on Steinway  we may use and arched rule because of the arched keyed
> only, they don't pretend it is for the future wear of the balance bushings,
> that is other makes that pretend (?) that.
> And may be is it only for visual effect !
> 
> Regards.
> 
> Isaac OLEG
> 
>> -----Message d'origine-----
>> De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part
>> de Carl Meyer
>> Envoyé : vendredi 16 novembre 2001 21:07
>> À : pianotech@ptg.org
>> Objet : Re: key levelling -- crown?
>> 
>> 
>> 
>> Yes, Dick , it was Steinway that did that.  However it was done
>> to make the
>> key level line follow the crown in the keybed, which was put in to ensure
>> full contact (spring loaded) of the action frame to the bed.
>> 
>> Had it been to compensate for felt compression, wouldn't it be appropriate
>> to have a schedule of releveling according to age or mileage?  Maybe 1/16
>> initially, then after 50000 songs we relevel to 1/32.  Then after another
>> 50000 songs to1/64?  Now, if the key frame is refelted we must start the
>> schedule all over again.  Damm!!! nobody told me that they'd refelted this
>> keybed!!
>> 
>> I've been trying to kill this legend for several years now.  It's hard
>> because at first glance it seems so "impressive" so "logical" so
>> "sophisticated" and it was of course Steinway that did it.  Was it really
>> necessary to crown both the bed and the key frame or would it have been
>> sufficient to but more crown in the key frame?  Does Steinway
>> have a patent
>> on that?  I doubt it.  Does any other company use that technique?  I don't
>> know of any.
>> 
>> If you haven't guessed yet, I think crowning the key bed is a
>> dumb idea.  It
>> was a complicated, expensive, confusing and just silly solution to a non
>> existent problem.
>> 
>> Maybe they would rather we say bad things about them than to say
>> good things
>> about some other brand.  Politicians always say "Say anything you
>> want about
>> me, just don't misspell my name".
>> 
>> Regards
>> 
>> Carl Meyer  Assoc. PTG
>> Santa Clara, California
>> cmpiano@home.com
>> 
>> 
>> 
>> 
>> 
>> 
>> ----- Original Message -----
>> From: "Dick Beaton" <rbeaton@initco.net>
>> To: <pianotech@ptg.org>
>> Sent: Thursday, November 15, 2001 11:17 AM
>> Subject: Re: key levelling -- crown?
>> 
>> 
>>> All...
>>> I recall the reason for doing this is that the middle of the piano gets
>>> played more than the ends. In time it will even itself out as the felt
>>> center rail punchings flatten out more.  As I recall, it was
>> Steinway that
>>> did this.
>>> Dick RPT MT
>>> 
>>> ----- Original Message -----
>>> From: Charles Neuman <piano@charlesneuman.net>
>>> To: <pianotech@ptg.org>
>>> Sent: Thursday, November 15, 2001 9:00 AM
>>> Subject: key levelling -- crown?
>>> 
>>> 
>>> 
>> 
>> 
> 
>