[pianotech] Leveling keys

[A440A at aol.com]

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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