Adjusting a magnetic action

[David C. Stanwood]

Hi Barbara,

1. Measure Up/Down
2. Calculate Friction (D-U)/2
3. Determine What you want for a Balance Weight
4. Calculate new U as BW -F
5. Calculate new D as BW + F
6. Widen or narrow the magnet gaps by making equal turns on the mag 
screws to make the new U.  Check that the new D is right.

If your doing a whole action the fastest and calculation free way is 
to make a set of friction test weights used in combination with touch 
weights laid out as a balance weight table.  This method is detailed 
in the PTG journal: 

(

David Stanwood

>Howdy,
>
>I'm working on a Steinway B that has had the Stanwood magnet system 
>installed (in the keys--for those of you who aren't familiar with 
>it).  After I get the piano regulated, what is the procedure for 
>adjusting the magnets?
>
>Thank you!
>
>Barbara Richmond, RPT
>near Peoria, IL
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