regulation problem

[Alan R. Barnard]

1. Dip of 3/4 inch?!?!? Maybe 3/8"+, Yamaha regs say 10 mm
2. Regulate just a few sample keys before felting the whole board. You may have to fudge the factory numbers to make things come out right.
3. Specs for the G1 say 65.5 mm and 12 mm higher for sharps. This may be the biggest source of your troubles...
4. I assume you've regulated parts alignment (especially jacks to knuckles, jack height, etc., before you set blow ... yes?
5. Then regulate rest rail (if there is one), letoff, and drop ...
6. THEN white dip then sharps dip, then take your first look at aftertouch.
7. Lather, rinse, repeat if necessary.
8. Move on to back checks, checking distance, etc.
9. THEN (critical) rep spring tension
10. Check everything, readjust in order as necessary, etc.
11. Move on to Dampers and pedals ...

Alan Barnard
Salem, MO
Joshua 24:15






Original message
From: "Jeff Miller" 
To: pianotech at ptg.org
Received: 01/06/2007 9:57:27 PM
Subject: regulation problem


I am trying to regulate a Yamaha G1 grand.  (trying being the key word here).  This is my first regulation for pay and boy is it giving me problems.  I have set key height at 45 .5 mm, blow at 47.5 mm, dip using the jaras key dip jig ( I think that would be 3/4 inch).  Anyway, I get ready to check my after touch and nothing!!!  The white keys are bottoming out on the black keys front rail felt.  What in the world am I doing wrong?  Please help.
 
Jeff Miller
Miller Piano Service 
Abilene, TX 
ljmiller3 at sbcglobal.net
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