I had a design for something like that which I could hang on the back of a pendulum and screw a weight up and down (actually I was going to move the whole device up and down). The problem was that it would impose significant air resistance and actually prevent the clock from running. I believe that 8-day clocks consume a significant (most?) of their energy in air resistance on the pendulum and hence the shape of the bob is actually quite important.
I also wonder whether you could do something at the suspension point -- but it is difficult to see how to do something that wouldn't impair the integrity of the existing mechanism.... Philip On Wed, Mar 10, 2021 at 5:20 PM Joseph B. Fitzgerald < jfitzger...@alum.wpi.edu> wrote: > > > You guys have me thinking about another "non cheating" technique. I am > now imagining a small gear motor/screw arrangement that raises or lowers a > mass on the pendulum to trim out small variations in swing frequency. > > -Joe Fitzgerald > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
