On Sat, 26 Oct 2013 21:22:08 -0600 Craig diese...@pisquared.net wrote:
All this talk of watches got me to thinking about the watches I
inherited from my father. A Hamilton pocket watch that was my
grandfather's and a lady's Gruen watch that was either my grandmother's
or my great aunt's.
i'm mostly just saying that bulova is promising you 10 seconds a year
accuracy and that is amazing and it's wrong to say that most any common
quartz watch can do the same and i challenge anyone to wear a quartz watch,
apart from an exceptional one such as a rolex oysterquartz. I may be all
mixed
jim, if i told you some baseless speculative BS and you called me out on
it, I'd prove it to you even if it did take a year
and it won't take that long as the watch in question will be at 10 seconds
long before then, like maybe at 6 months
On Thu, Sep 19, 2013 at 10:41 AM, Jim Cathey
why won't you guys do the same?
In the contest between baseless speculative BS, and spending
a year proving something, you have to ask? :-)
In a quartz watch, it's 100% about the crystal. Shock mount,
thermal control, and its own inherent cut and quality.
They run at 32,768 Hz, or 2^15. It
On Wed, 18 Sep 2013 23:37:54 -0500 Peter Frederick psf...@earthlink.net
wrote:
Actually, the resonant frequency is some odd-ball number around 32k,
but it's the natural resonance frequency of small quartz crystals,
which eliminates much of the required precision in manufacture, or
Actually, no. The crystals have to be manufactured to the correct
dimensions to get the 32,768 Hz oscillations. I initially thought
lithography was the key to cheap crystals, but on second thought,
I'm not sure how they are manufactured.
Mechanically cut and ground, last I heard.
Quartz
and it won't take that long as the watch in question will be at 10
seconds
long before then, like maybe at 6 months
Not necessarily, depending on why it's off, and how far.
If it was due to ambient temperature, they could well shoot
for fast in the summer and slow in the winter, depending on
On Thu, 19 Sep 2013 18:35:00 -0700 Jim Cathey j...@windwireless.net
wrote:
Actually, no. The crystals have to be manufactured to the correct
dimensions to get the 32,768 Hz oscillations. I initially thought
lithography was the key to cheap crystals, but on second thought,
I'm not sure how
On Thu, 19 Sep 2013 18:40:42 -0700 Jim Cathey j...@windwireless.net
wrote:
I don't know watches. I know what I've read about quartz crystals, and
a bit about watches, and a fair bit more about lying advertisers.
Their 10-second a year watch might make it, if it _never_ left your
wrist, and
Yes, very stable oscillators use a crystal oven to hold the crystal at a
constant temp to avoid frequency drift. Same principle seems like it would
apply to a watch as well.
On Thu, Sep 19, 2013 at 8:44 PM, Craig diese...@pisquared.net wrote:
On Thu, 19 Sep 2013 18:40:42 -0700 Jim Cathey
On Thu, 19 Sep 2013 20:55:47 -0500 OK Don okd...@gmail.com wrote:
Yes, very stable oscillators use a crystal oven to hold the crystal
at a constant temp to avoid frequency drift. Same principle seems like
it would apply to a watch as well.
Yes, but of course!
The best ones have the crystal
All this watch talk reminds me, in 2011 for our 10th anniversary Angie and I
went on a cruise. We went to one of those everything you need to know about
shopping talks where they told us about all the great deals on watches and
jewelry. So we headed down to look at watches. I found an Omega I
Message-
From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Curt
Raymond
Sent: Wednesday, September 18, 2013 1:21 PM
To: Diesel List
Subject: [MBZ] OT: watches
All this watch talk reminds me, in 2011 for our 10th anniversary Angie and I
went on a cruise. We went to one of those
in
bed; 'haven't worn a watch in 30+ years.
Wilton
- Original Message -
From: Curt Raymond curtlud...@yahoo.com
To: Diesel List mercedes@okiebenz.com
Sent: Wednesday, September 18, 2013 4:21 PM
Subject: [MBZ] OT: watches
All this watch talk reminds me, in 2011 for our 10th anniversary
at
that
one. A little too much $$$ for me at the time.
Greg
-Original Message-
From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Curt
Raymond
Sent: Wednesday, September 18, 2013 1:21 PM
To: Diesel List
Subject: [MBZ] OT: watches
All this watch talk reminds me, in 2011
I have the Bulova Accutron that my father bought at a pawn shop when it was
about a year old. The substitute batteries work in this one, and it keeps
reasonably good time. I like to let paople listen to the hum ---
Otherwise, haven't worn a watch in many years either, and keep reducing the
number
i used to have a lot of accutrons. there are parts issues and not a lot of
guys who know how to work on them. i once considered investing in the
tools and working on them as a hobby, but, like so many considerations,
nothing came of it
On Wed, Sep 18, 2013 at 7:16 PM, OK Don okd...@gmail.com
Bulova is owned by a Chinese consortium, don't confuse it with the
company that made top quality watches ages ago. 10 sec per year is
about standard for a jeweled quartz watch, by the way.
My current carry watch switches back and forth between a 1968
Seikmatic 8306 caliber with 30 jewels
do you own a quartz watch? does it run to 10 seconds a year?
this is nonsense. very few quartz watches will run to 10 seconds a year
and i defy you to test it for yourself
On Wed, Sep 18, 2013 at 7:37 PM, Peter Frederick psf...@earthlink.netwrote:
Bulova is owned by a Chinese consortium,
Gary Hurst wrote:
do you own a quartz watch? does it run to 10 seconds a year?
this is nonsense. very few quartz watches will run to 10 seconds a year
and i defy you to test it for yourself
My SND195 was right around a second a month when new (caliber 7T92).
Most accurate watch I've ever
none of you can produce a quartz watch that will run to 10 seconds a year
and for a company to promise that is amazing. i stand by this. even your
unusually accurate seiko won't do it.
it's silly to poo poo such an l achievement and classify it as typical
for jeweled quartz movements.
On Wed,
Gary Hurst wrote:
none of you can produce a quartz watch that will run to 10 seconds a year
and for a company to promise that is amazing. i stand by this. even your
unusually accurate seiko won't do it.
A Seiko 9F is rated for it, like a Rolex is rated for 4s/day.
But there's a difference
none of you can produce a quartz watch that will run to 10 seconds a
year
What if they spec'd it at wrist temperature the whole time?
Lying via unrealistic conditions is a very common thing.
-- Jim
___
http://www.okiebenz.com
To search list archives
dickarde says it is the precision cut of the crystal that makes extreme
accuracy possible and few will go to the trouble to cut it absolutely
perfect to get sub 10 seconds when 20 or 30 can be achieved so much more
easily and, for all practical purposes, just as good. the only watches
that could
Motion, particularly abrupt motion or tapping/knocking the watch
produces much more error than temperature.
Quartz watches use a tuning fork crystal and divider circuit to
produce a pulse once a second, and any decent one should run within a
few seconds a month, good ones a second a month
On Wed, 18 Sep 2013 23:01:08 -0400 Gary Hurst jabbahur...@gmail.com
wrote:
dickarde says it is the precision cut of the crystal that makes extreme
accuracy possible and few will go to the trouble to cut it absolutely
perfect to get sub 10 seconds when 20 or 30 can be achieved so much more
Actually, the resonant frequency is some odd-ball number around 32k,
but it's the natural resonance frequency of small quartz crystals,
which eliminates much of the required precision in manufacture, or
should anyway.
This is why a quality quartz movement costs $20 (much less in
The accuracy is pretty cool but who can keep track of 10 seconds a year?
Watches are more or less a fashion statement. I'm with Wilton. iPhone,
computer, car. When I got a smartphone I got rid of my alarm clock on my
nightstand.
On Wed, Sep 18, 2013 at 10:13 PM, Craig diese...@pisquared.net
I discovered early on that I don't like digital watches. I really
dislike doing math when looking at a watch, I guess.
I changed back to analog watches in the early 80s, and have not looked
back.
I still prefer to wear a decent automatic, too.
No batteries.
Peter
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