[time-nuts] Any time-nuttery for spring-wound car clocks?

[Tim Shoppa]

Warren, while my original question was about time-nut measurements made of
the mechanical spring-wound clocks, I am also broadly interested in
measured data on various types of quartz (and maybe other?) movements.

One advantage of a quartz-regulated mechanical unit is that there is a
ticking that could be picked up microphonically or magnetically to do
non-interfering measurements.

Tim N3QE

On Mon, May 4, 2020 at 1:26 PM Warren Kumari <warren at kumari.net> wrote:

> On Mon, May 4, 2020 at 11:37 AM Tim Shoppa <tshoppa at gmail.com> wrote:
> >
> > Has anyone done any time-nuttery with the mechanical clocks available in
> > cars up through the 1970's?
> >
>
> Not me, but a few years ago I repaired the clock in a 1980 Ferrari 308
> -- I didn't really think to take many photos, nor did I bother to
> check the accuracy, but over the course of 3 or 4 years it was always
> "right" (the time showed accurately enough that I didn't notice it
> being wrong (modulo DST!)).
> This was a quartz unit, made by Veglia Borletti - the issue was that
> the tip had sheared off the staff on of the wheels had sheared off
> (see photos) - I initially tried repairing it with some tiny pins and
> CA glue, but ended up getting another clock from an Fiat and
> scavenging the wheel from that...
>
> Pics: https://photos.kumari.net/Cars/Ferrari-308/Work-Clock/
>
> W
>
> > These were typically spring-wound mechanisms with a solenoid that winds
> the
> > spring when it approaches wound-down condition.
> >
> > I can find some good articles on the interwebs about reconditioning and
> > repairing and calibrating these
> >
> > What I'm more interested in, is actual measurements related to
> temperature,
> > vibration, and other environmental factors.
> >
> > Tim N3QE
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>
>
> --
> I don't think the execution is relevant when it was obviously a bad
> idea in the first place.
> This is like putting rabid weasels in your pants, and later expressing
> regret at having chosen those particular rabid weasels and that pair
> of pants.
>    ---maf
>
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