Touch weight

[Jon Page]

At 01:56 PM 3/23/99 -0500, you wrote:
>(Down weight minus up weight) divided by two gives you the friction
>for that key.  It should be in the 12 range in the bass to about 7 in
>the treble.  Higher numbers indicate too much friction or a major
>action geometry problem which should be addressed before changing the
>key weight.

For most pianos that is a little low on friction. Something which is tolerable
is
15 or 16 bass and 10 or 11 treble.

S&S specs for concert grands is 50/20 bass to46 treble.
With 50/20 the BW is 35 and friction is 15. Maintaining the 35 BW in the
treble
the friction works out to 11.

Regards, 

Jon Page
Harwich Port, Cape Cod, Mass. (jpage@capecod.net)
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