[pianotech] Leveling keys

[Piano Boutique]

If the keys in the middle of the action will settle, then isn't that enough 
to plan for.   Also if the center rail will settle with playing, so will the 
front rail be beaten down.

William



----- Original Message ----- 
From: "David Love" <davidlovepianos at comcast.net>
To: <pianotech at ptg.org>
Sent: Tuesday, June 23, 2009 9:28 PM
Subject: Re: [pianotech] Leveling keys


> Not to be disagreeable but I don't think those are functional reasons. 
> The
> difference in the amount of key over the front pin is not significant with
> only a 2 mm rise in the middle.  Also, assuming the aftertouch is set
> uniformly to begin with then whether the keys are level or curved the
> aftertouch will diminish as the keys settle in the middle.
>
> David Love
> www.davidlovepianos.com
>
> -----Original Message-----
> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On 
> Behalf
> Of A440A at aol.com
> Sent: Tuesday, June 23, 2009 6:02 PM
> To: pianotech at ptg.org
> Subject: Re: [pianotech] Leveling keys
>
> Joe writes:
> << Steinways key cover is straight, as well. Why do they advocate a curved
> keyboard??? I have asked and NO ONE has ever told me: #1 when that policy
> started. #2 why that policy started. #3 what advantage, if any, this would
> do.
> When they come up with a rationale, (yeah, like that's going to happen!),
> reason...I'll keep setting them keys FLAT/LEVEL/Parallel! >>
>
> Greetings,
>    One reason is that if the keybed and keyframe are curved, you have to
> level the keys in a similar fashion
> if you want them to all be sitting over the same amount of front pin.
>    Another is that worn keyboards all seem to have a reverse curve to the
> key level, so beginning them with a slight curve upwards will maintain
> usuable amounts of aftertouch longer than if they were flat.
>      There, that is two functional reasons.
>
> regards,
>
> Ed Foote RPT
> http://www.uk-piano.org/edfoote/index.html
> www.uk-piano.org/edfoote/well_tempered_piano.html
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