How to Measure Strike Balance Weight?

[Richard Brekne]

Its kind of a trick... you cant really get dead on sure about it you 
see.  But you get close enough.  You put on weight so that the key 
easily finds its way to the middle of the stroke when coaxed... and you 
very lightly throw the back of the key both upwards and downwards so 
that it bounces back evenly both ways.

You can do the same thing with just the key itself for practice... to 
sort of get the feel.  Measure your front weight for a key and  put 
double that weight on the capstan with the key sitting in the action. 
Then try feeling how the key responds when you lightly throw the back of 
the key up and then down.  You <<throw>> only hard enough to get the key 
to very lightly bounce back.  Put heavyer and lighter weights on the 
capstan so the key wont be in balance and then compare.

The <<balanced>> key will behave nearly identical for each direction 
where as the unbalanced key will tend to settle either at the top or the 
bottom of the key stroke.

Hope this helps

RicB

baoli liu wrote:

>I have a question about how to measure strike balance
>weight.
>
>
>according to Mr. Stanwood,there are 4 steps to measure
>strike balance weight:
>
>1.lift up the hammer and shank
>2.place temporary weights on the back of the key such
>that the balance weight of the key and wippen becomes
>zero.
>3.....
>
>my question is about the second step,how to zero the
>balance weight of the key and wippen by putting
>weight.how can i deal with the friction--key friction
>weight?
>thanks!
>Baoli Liu,RPT
>
>
>	
>		
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