Hello Paul,
You will still need to power the clock by winding it up when required.
The pendulum does not drive the clock, it regulates how the power is
allowed to escape from the driving force through a mechanism called the
escapement.
As far as regulation goes the traditional was is to
This has been a most interesting thread.
One method of controlling a pendulum but allowing it to swing naturally that
I am familiar with is to put a small unobtrusive magnet on the bottom of the
bob and an inductor on the base of the clock at the centre of the swing.
Depending on how you arrange
My feeling was that a fairly small battery could run the weight adjuster
for a year or two. It has to power some type of RF receiver to pick up a
locally broadcast time signal (probably on 2.4GHz). Given that it can
characterize the local crystal, the actual 'on time' of the receiver would
be
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
jfitzger...@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
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
To: Discussion of precise time and frequency measurement
>
> Subject: Re: [time-nuts] Grandfather clock sync'd to 1PPS (from
> time-nuts Digest, Vol 200, Issue 4)
> Message-ID:
> <
> camd_wwrfz5pm2zeb6asga6b-15vyoxc4v2s8qqfsfwvqurq...@mail.gmail.com&
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
___
I solved the rewind problem by putting an alarm on my phone for noon on
Sundays. During the pandemic, I'm always home, so that works out too!
On Wed, Mar 10, 2021 at 11:52 AM Dana Whitlow wrote:
> Philip,
>
> You and I are definitely "in sync" regarding cheating to alter the pendulum
>
Philip,
You and I are definitely "in sync" regarding cheating to alter the pendulum
motions!
I had a very similar thought for effectively making the pendulum based
system into sort
of a VCO, except that instead of a metal plate, use a small Nd magnet
polarized
vertically, stealthily-attached to
I've been wanting to do this as well, but I feel that it is "cheating" to
actively drive the pendulum. I want to have a passive approach to
disciplining the clock so that the clock itself is keeping time.
One approach that I have seen was to put a magnet at the bottom of the
pendulum and then
--
From: Gerald Swann
To: time-nuts@lists.febo.com
Subject: Re: [time-nuts] Grandfather clock sync'd to 1PPS (from
time-nuts Digest, Vol 200, Issue 4)
Eamonn and all,
You mentioned you hope to get your grandfather
I also disciplined a friends grandfather clock. I used a small servo to
nudge/impulse the pendulum. It used 24 impulses/minute. Worked rather well for
a crude hack. No mods were done to the clock case/mechanics.
___
time-nuts mailing list --
Eamonn and all,
You mentioned you hope to get your grandfather clock time synchronized
to a 1PPS signal. That would be a very satisfying project, I can assure
you. I did that with my own grandfather clock. My father built the clock
quite a number of years ago from a kit, and used walnut
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