Weighing Off An Action

[David Love]

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I would start with the November 1990 PTJ entry by David Stanwood, =
Mastering Friction with the Balance Weight System.  It will show you =
that you should be using Balance Weight, not downweight, as the standard =
and will give you one procedure.  One caveat, there is a lot more to =
this than just adding lead and it involves taking some precise survey =
measurements before you start changing parts.  But it seems this is =
after the fact now so this will give you a start.  For further reading I =
would check Stanwood's articles in the Feb, March, April 2000 issues as =
well as the June 1996.=20

David Love
  ----- Original Message -----=20
  From: Patrick C Poulson=20
  To: Pianotech@Ptg.Org=20
  Sent: November 09, 2001 10:31 AM
  Subject: Weighing Off An Action


  Hello All: I have hung some new hammers and shanks on the action from =
a Edmund Gram baby grand.  It has no key weights, and with the new parts =
the downweight on all the keys except the upper two octaves is in the =
60+ gram range. The friction levels in the upper octaves are acceptable, =
and as the rest of the action has the same parts and has been =
reconditioned the same way I don't believe that friction is the culprit =
here.  However, I have never weighted an action before.  I am going to =
look through the Journal CDs for articles on weighing off an action, and =
would appreciate any advice or input as well.  Is this a case of fools =
rushing in where angels fear to tread, or an opportunity to learn a new =
skill?  Thanks, Patrick Poulson, RPT

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