Touch Weight

[Horace Greeley]

Jim,

I would find this most interesting, myself.

How do you propose to set up to do it?

Best.

Horace


At 11:12 AM 12/22/2003, you wrote:
>Ed, Don, Isaac, Richard, Vince,
>
>Since posting my latest memo, I have been thinking.  There might be one
>case where putting more leads closer to the center of the key to reduce the
>"key" inertia might help a little bit.  That is in the case of partial-blow
>repetition, where the jack just gets back under the knuckle on fast key
>release from check, and the blow is repeated before the hammer has time to
>come back to rest.  In this case, the hammer has not yet come into the
>picture as far as return acceleration is concerned.  It's still up in the air.
>
>Ed Sutton suggested some measurements, and I think that might be a good
>idea.  If the concensus of the group is for it, I can do it.  I would
>propose to measure the return time of the jack under the knuckel following
>sudden key release, and also the acceleration of the hammer on return from
>check.  I would expect these two measurements to be quite different, and I
>would expect the reduced key inertia to allow the jack to return under the
>knuckle a little bit faster, but nothing dramatic.  I would not expect much
>difference in the return time of the hammer to the rest position.
>
>All of the above would need to be done from the checked position after
>sudden key release.  Anything else would simply be measuring hammer rebound
>time.
>
>It will require some set-up time to do the test, but I will do it if there
>is much interest.  If not, I won't.  What's your pleasure?  Would you like
>me to set up the test and do the measurements?
>
>Jim Ellis
>
>
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