regulating philosophy

[Gregor _]

For me it´s indeed a feel of a certain combination within a range of 
measures I learned. The range is given, but there is always some tolerance. 
If I prefer one thing it will be at the cost of another thing because it´s a 
dynamic system.

The only thing I don´t play around with is the keydip which should always be 
10 mm (minimal tolerance with that). I learned the following "philosophy" 
about regulation: always start with the keyboard. As a rule of the thumb: 
work away from your body and from bottom to top:

1. height of keytops above the bottom of the keyframe (who claimed to be the 
nomenclatur cop? How do you call this)
2. keydip
3. as an exception from the bottom to top rule: check blow distance
4. lost motion
5. let off
6. dampers
7. the checkers/backcheckers (is that the correct name?) is the last what I 
do, at least with old uprights without new felts and leathers (no complete 
rebuilding). I don´t care if they are not in a perfect row like tin 
soldiers.

The measures have to be within the range, but more important is "a good 
feeling".

Gregor




>From: "ed miller" <edmiller3 at hotmail.com>
>Reply-To: Pianotech List <pianotech at ptg.org>
>To: pianotech at ptg.org
>Subject: regulating philosophy
>Date: Sun, 28 Jan 2007 23:21:25 -0500
>
>I'm curoius to hear about people's approach to regulating. More 
>specifically I'm looking for thoughts in two areas:
>
>1) When you are beginning to regulate using a few sample keys to discover 
>what specs work best for that piano, what exactly is IT that you are 
>looking for? How do you know when you have found IT?
>
>Is it more in the "feel" that a certain combination of specifications gives 
>a keystroke, or is it more in the absoluteness of the numbers (for example, 
>if you are looking for .045" aftertouch, then whatever combination of the 
>other variables that results in .045" aftertouch is best)?
>
>2) As you work toward finding the best possible regulation you have to make 
>compromises along the way. How do YOU rate the variables in a keystroke's 
>geometry in terms of importance? For example, in the following list which 
>items do you think take precedence over others:
>
>Blow Distance, dip, let-off, aftertouch, checking distance, (add whatever 
>else I've missed)
>
>A curious mind wants to know. Thanks.
>Ed
>
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