[time-nuts] New ± 1 sec in 100 days mech clock

Matt Ettus boyscout at gmail.com
Thu Apr 23 01:50:36 EDT 2015


There's a great series of videos from a clockmaker on youtube and his own
site:

     http://clickspring.weebly.com/

These are probably the best produced how-to videos I've seen on youtube on
any subject.  Highly recommended.

Matt


On Wed, Apr 22, 2015 at 3:57 PM, Bob Camp <kb8tq at n1k.org> wrote:

> Hi
>
> In some ways this is like:
>
> I can buy tubes of paint and some brushes down at Hobby Lobby.
>
> That’s what I need to paint the next Mona Lisa.
>
> While that’s all quite true, it’s not the whole story :)
>
> There’s an enormous amount of training and experience that goes into
> fitting this
> sort of thing up. There is even a certain amount of “art” that goes beyond
> simple training.
> Not all watch/clock makers are up to this sort of thing. Highly skilled
> people have been trying
> to do this kind of clock for a *long* time ….It’s not just an assembly
> process.
>
> Indeed I’d love to see the details of how they did the design. There are
> some basic
> challenges that they (obviously) addressed very well. Even with a good
> description
> of what they did and a pile of parts, you are still only (maybe) 10% of
> the way to a duplicate.
>
> Note: I’m *not* claiming I am any good at clock making. I’ve simply seen a
> lot of
> this sort of work done over the years.
>
> Bob
>
> > On Apr 22, 2015, at 10:03 AM, Dan Kemppainen <dan at irtelemetrics.com>
> wrote:
> >
> > Hi,
> >
> > In all reality, achieving these results without decades of experience is
> probably unlikely. That said, are the specific plans available or published
> anywhere? Is is possible that someone willing to build and tinker could
> make a 'functional' copy of this unit?
> >
> > I would guess that not all of the parts need extreme tolerances. But
> even then many mills are holding positioning tolerances well under .001",
> with tool deflections of .0001" or under (if run and maintained properly,
> that is). My 'list' includes a mechanical clock build. And this one would
> be a dandy to try to build!
> >
> > In any case, the clock is still interesting to read about! It's great
> that some of you are lucky enough to get to see it! :)
> >
> >
> > Dan
> >
> >
> > On 4/21/2015 12:00 PM, time-nuts-request at febo.com wrote:
> >>
> >> You could always use the traditional method of piercing saw and files.
> >> Thinking about it I suppose files were the original milling machine.  Be
> >> aware that the horological approach is different from the engineering
> >> approach and there are numerous traps waiting for the unwary.  Harrison
> >> and Martin's clock B have remarkable performance but could still be
> >> improved by using multiple pendulums to overcome the noise effects for
> >> example a two pendulum clock is performing within 1 second in six months
> >> (so far) so I will have to get the hacksaw out for the three pendulum
> >> version - or is it back to the GPSDO.
> >>
> >> Peter
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