ACTION WEIGHTS

[Stuart & Aimee Balsillie]

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List,
Thanks to all for the replies.
 will go off and do some study, but a few quick queries first.
How many times are heavy hammers  the problem with heavy =
actions?(especially when they come untouched from the factory)
I would have thought that the friction problems would be the first =
priority before even thinking of replacing the hammers.
It was  mentioned that 60 grams wasn't that heavy,  I was under the =
impression that touch weight should be 48-52grams is this right? If not =
what is "the" accepted weight range? Is it possible to have a very nice =
playing action with high DW? I thought that regardless of ratio, =
friction etc the DW is the force required to move the key to the point =
of let off.
Most grateful for all the help
By the way, the weight were standard brass weight used in the =
trade................well I hope they are the same as the ones I bought =
at the part suppliers here.

Stuart
sabalsillie@bigpond.com

  ----- Original Message -----=20
  From: Stuart & Aimee Balsillie=20
  To: pianotech@ptg.org=20
  Sent: Wednesday, May 01, 2002 7:31 PM
  Subject: ACTION WEIGHTS


  To all,
  I would be most appreciative if anybody would be able to help  me =
understand problems with touch weight in actions.

  I was recently talking to a friend who is a piano technician and he =
was showing me a Schimmel grand action he just got in for repair ( not =
sure what size grand as he only had the action but apparently  the piano =
is 30 years old,  and has not been touched by anyone)  He said the touch =
was very heavy, and when he put weights on it the keys would not budge =
under 60 grams although this varied from key to key.I asked if it was =
only due to heavy hammers? surely there must be friction problems as =
well (as I am sure Schimmel would not regulate their actions to 60 grams =
(is this assumption right?)   He said yes there was friction problems an =
he proceeded to quickly lubricate the roller on middle C, when he put =
the weights on this key it then moved at around 50 grams. I thought =
surely this would prove that there were friction problems and not hammer =
weight problems, he explained to me that although the weight had dropped =
the hammers were too heavy and that it will not play properly. I seem to =
have an uneasy feeling about this explanation and would be most grateful =
for anyone able to help explain what may be happening in this action.

  sincerely,

  Stuart Balsillie
  Piano Technician
  Kyneton
  Australia
  sabalsillie@bigpond.com


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