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Old February 23rd 18, 10:30 AM posted to rec.bicycles.tech
Andre Jute[_2_]
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Posts: 10,422
Default Inexpensive LUX meter from China to measure your bike lamp's output

On Friday, February 23, 2018 at 1:19:33 AM UTC, AMuzi wrote:
On 2/22/2018 7:12 PM, Andre Jute wrote:
On Thursday, February 22, 2018 at 11:28:56 PM UTC, AMuzi wrote:
On 2/22/2018 5:09 PM, Andre Jute wrote:
On Thursday, February 22, 2018 at 4:35:07 PM UTC, Jeff Liebermann wrote:
On Wed, 21 Feb 2018 16:52:57 -0800 (PST), Andre Jute
wrote:

Even at such an attractive price, I'm not buying the meter, Jeff.

I consider it beneficial if those recommending a product would also
have some experience using it.

See my original post at the top of the thread, where I say, "No recommendation".

For health reasons, I no longer go for those middle watches of
the night rides, as no one will go with me and it's stupid for
me to ride alone on totally empty lanes. So I have nothing
to measure for.

I have a similar problem. I don't ride at night. Too dangerous
around here and my night vision is slowly deteriorating. However,
this has not stopped me from commenting on the topic and testing
various lights.

In any event, by subjective measurement a la Roger's post,
I judge I already have what on balance I consider BUMM's best
lamp, the first series Cyo R (I also have reflectorless
version but it isn't as good in lanes as the R, and I have
the Fly-E with supposedly the same optics but with a very
nasty hotspot), so I'm not even in the market for new lamps.

Et tu Jute? I was under the delusion

I don't know any engineers with enough imagination to suffer delusions. They stop at misapprehensions. If you want to see delusions in action on a mass scale, check the so-called "resistance" in your backyard. The difference is that a misapprehension can be corrected, but a delusion is a pathology that can at best be ameliorated.

that we were discussing
instruments and methods of measuring light output and not a review of
available products. Oddly, every time (and I do mean every time) I
bring up the subject of light measurement, the discussion immediately
drifts away from measurements and gets mired on the mud flats of
anecdotal experience and subjective "calculation". It would seem that
the participants greatly fear making measurements and the assignment
of numbers to their favored bicycle headlight, as if this would
somehow diminish the value of their illuminating experience. I wonder
if it is even possible to discuss light measurements without the
apparently incurable product endorsements, which incidentally is only
slightly less prevalent in the flashlight forums.

Oh, I don't back away from abstractions where relevant. But, on a "tech" conference with a predominantly American membership, what do you expect? Thoughtful hotrodders? Pull the other one.

I only need one tool. Anything within reach can be used as a hammer..

You and Clarkson both. I'm an intellectual: as a reflex, I reach for my trusty Pickett pocket slide rule. The saddle-leather slipcase is worn almost yellow, but I feel naked without it, and they don't make them like that any more, though my favorite everyday watch, which is decades younger, has a perfectly good rotary slide rule on its bezels as a backup:
http://coolmainpress.com/andrejutewatches.html#Navihawk

Andre Jute
God bless the instrument makers



You're right, The Resistance is a bunch of loons:
http://socialistresistance.org/brexi...e-goes-on/8534

And not just that one either!
https://www.theguardian.com/politics...dence-movement

Even those amiable Canadians went through their own:
http://mhs.mb.ca/docs/mb_history/29/...sistance.shtml



Gee, Andrew, I didn't even know about those. How depressing. Mind you, for Americans it is probably good news to discover they aren't the only nation to harbour a large hysterical and infantile, anti-democratic part of the total population.

Andre Jute
Fair to a fault


'resistance':

It's often quipped that if half the French who claimed to
resist the Vichy regime actually did, they would have won.
--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971


One day after a good dinner on expenses I'm sitting in a bar in the West End with my editor of record, John Blackwell, and the designer of the Aston Martin DBS and V8, William Towns. These two jokers for a lark were massaging a Merlin V12 out of a Spitfire into Morris Minor. I was supposed to be interviewing them on the tab of another publisher for whom I was doing a car book, but I knew more about the engine than they did (I had eight of the Packard-built V1650s, which was a licensed Merlin design with more reliable bearings, for my offshore speedboats, and a dynomometer to develop them, and a couple of knowledgeable old chappies left over from the war to wield the wrenches and keep me from getting a conrod through the ribcage), so we were just getting nicely stewed at some absent party's expense. A middle-aged fellow from the bar follows me into the lavatory. When he just stands there eyeing me, I say, "Sport, I'm not queer, and I'm violent beyond your fondest imagination. **** off before you get hurt." This guy is aghast. "No, no, no!" he says. "I heard you're doing a book about one-off and small-production cars. I just want you to spell my name right when you mention that I designed the Austin-Healey 3000." Back at the table, when I tell them this, Bill Towns goes to the bar and brings back another guy. "Tell Andre who designed the Healey 3000." Promptly, the guy says, "I did." So I write down his name too. Bill lets a while pass, then goes to the bar and brings another guy. At the end of the evening, as they poured me out at the station to take the 0505 newspaper train to Cambridge, I had five names of guys who all swore blind that they designed the Healey 3000, all by their lonesomes. That was nothing. Bill told John after I was gone that he was once in company with six sole Healey designers. -- and there wasn't even a fistfight.

AJ
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