Damper TouchWeight

[jolly roger]

Hi Linda,
              The measurements were taken as down weight at the key tip.
There is a mechanical advantage,  wip heel to centre pin, centre pin to spoon.
Roger


At 10:48 PM 8/8/01 +0200, you wrote:
>Hi Terry,
>
>Reading in my old pianotech book it says:
>For newer pianos damperspring weight is in the bass about 100 grams, midpart
>about 90 grams and in the treble about 70-80 grams. You measure this with
>the action out on your work bench with the action on it´s back. You take the
>measurement on the woodpart of the damper just under the thread.
>If you think the spring is too strong just loosen it a little. Just beware
>of that if you loosen them too much the piano may start "ringing". Well,
>you´ll see what happens.
>
>greetings
>from
>Linda Strahle
>Sweden
>
>
>
>
>-----Original Message-----
>
>Subject: Damper TouchWeight
>
>
>I tuned a 1970s Everett Studio the other day. With sustain pedal depressed,
>DownWeight was around 50 to 55 grams. Without depressing the sustain pedal,
>the touchweight skyrocketed to about 95 grams. Clearly this is toooo
>"heavy". Are there any guidelines for both verticals and grands for how much
>downweight the dampers should add??? Thanks.
>
>Terry Farrell
>