[time-nuts] Grandfather clock sync'd to 1PPS (from time-nuts Digest, Vol 200, Issue 4)

[paul swed]

Like you all, I have always thought it would be fun to mess with a
pendulum clock. Since I have one already what stands in the way? Well my
Wife might think very differently about a few screws and wires in that
clock. At the other end of the spectrum is Bill S. beautiful clocks he has
built. Not going to be anything like that. So will have to settle for a
magical deal some day. Though for now Fleas and other gatherings are out.
I was wondering about winding the clock. And I see its still needed. I had
thought by driving the pendulum the clock would not need the drive weight.
Am I wrong about that? Or simply they are two different and separate issues.
Want to thank Gerald for sharing what he did and starting a great thread.

Regards
Paul
WB8TSL

On Wed, Mar 10, 2021 at 9:17 PM Hal Murray <hmurray at megapathdsl.net> wrote:

>
> jfitzgerald at alum.wpi.edu said:
> > 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.
>
> How are you planning to get power to the motor?
>
> How much would a thin wire running down the pendulum shaft screw up the
> timing?  How long would it last?  I'm picturing thin/flexible wire with a
> generous loop from the fixed clock frame to the pendulum.
>
> I assume people make wire for use cases like that.  Is there a buzzword to
> search for?
>
> Plan B would be to use a photo cell.  You also need control as well as
> power.
> Maybe 2 photo cells, one for power and the other for data with a filter to
> block the wavelength used for power.
>
>
>
> --
> These are my opinions.  I hate spam.
>
>
>
>
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