METHOD

[Brian Trout]

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Hi Rogerio,

If you're trying to do what I think you're trying to do,  there's a sort =
of triangle set up by hammer blow, letoff, and keydip.  Any one of them =
can affect how these three relate to each other.

If you have the hammer blow and letoff at a distance you like, and that =
equates to a keydip pretty close to what you have in mind, then precise =
kedip is irrelevant.  It doesn't matter. =20

Precision of aftertouch, is the desired product, with actual keydip =
being more of a byproduct.  A good pianist is more likely to feel uneven =
aftertouch than uneven keydip during normal playing.

The object of the aftertouch 'spacer' that you're putting under the =
front rail punching is to provide a specific amount of aftertouch, the =
thickness of the spacer.  Different people have slightly different =
methods, but it will be something like adding or subtracting punchings =
(with the 'spacer' in place) until at the bottom of the key stroke, the =
jack is just making contact with the letoff button.  That's where the =
precision comes in, because you'll be able to set that very precisely.  =
When the aftertouch 'spacer' is removed, there will be a very specific =
aftertouch that you'll be duplicating along the length of the whole =
keyboard, very precisely, and very evenly. =20

Again, if you've set the blow distance and the letoff properly and =
carefully, and keydip is in a normal range, specific keydip is =
irrelevant in this procedure.  It is important to keep the relationship =
of hammer blow, letoff, and keydip in a certain range to aid in proper =
function.  Normally, if it is to be regulated to maximize speed of =
repetition, you'll likely want the keydip a little more shallow, and the =
jack pretty close to the knuckle.  If you're trying for increased power, =
you'll probably want a deeper dip, and a longer hammer blow distance.  =
Many times, there's not necessarily only one right way to do it, but =
rather there's a range of adjustment that can be tweaked to suit the =
needs of the performer.

I don't know if that helps or not.  Perhaps others will care to comment.

Good luck.

Brian Trout
Quarryville, PA
btrout@desupernet.net


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