[CAUT] Erard piano

[Overs Pianos]

Hi Wim and Ed,

>Thanks Ed, for this information. Unfortunately, although this all 
>makes sense to a piano technician, this guy is a piano player, and 
>all he wants is someone to do the work. But he needed some specs to 
>tell the technician what is right. Apparently he can't find someone 
>in his area that is capable of doing this. (Maybe I can ask him if 
>he'll fly me over there to do the work) :)
>
>Wim


At 2:20 PM -0400 29/5/06, A440A at aol.com wrote:
>
>     You can find the proper keydip by understanding that the sharps must not
>go farther than approx. 1 mm above the tops of the naturals when depressed,
>and they cannot be above 13 mm above the naturals when at rest. This is your
>range of keydip.  The hammers must not lie on the rest rail, nor be 
>more than 5
>mm above it.  This is your hammer range.  Let-off can be set at 1 mm 
>throughout
>the scale for a beginning specification.  You should then be able to find a
>comfortable set of specs that are tailored to the performers sense of touch by
>varying the amount of aftertouch. ie.  if you want to reduce the aftertouch to
>a minumum, (which will be the fastest action), lower your hammers or raise
>your keydip, or a little of both.  You may then want to set your 
>let-off to just
>below the lower excursion limit of the string when the string has been struck
>as firmly as the performer is likely to play it.  The drop should leave the
>hammer at exactly the same height as let-off. Springs should be as strong as
>possible without being felt in the key upon hammer release.
>The knuckle should be in contact with the top of the jack, but no more than
>that.  The distal edge of the jack should be even with the distal edge of the
>knuckle core.
>      The dampers should begin to lift when the hammer is halfway to the
>string.

Excellent summary post Ed. The pianist should take Ed's post and 
present it to each prospective technician in turn until he finds 
someone who understands it. Then he'll probably have found someone 
who is capable of setting the piano up to perform as it should. Ed's 
list is more useful than a factory regulation spec list.

Ron O.
-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
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Web http://overspianos.com.au
mailto:ron at overspianos.com.au
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