Luxos U Warranty Chat

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ergott
ergott's picture

And the beam pattern looks like the ones I hate from your typical USB light. Not one of the nice Euro lights like B&M or the like.

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Wed, 11/01/2017 - 12:25
Tail Hook Lengthener
Tail Hook Lengthener's picture

Well any dynamo light which advertises their 700 lumen count doesn't really know shit.

Sneaky Viking wrote:
when you look back at your life sometimes you see a set of hands on your keyboard and a set of paws, but sometimes there's only a set of paws and that's when Tarckbear was typing for you.

Wed, 11/01/2017 - 12:28
Goddamnit Gunther
Goddamnit Gunther's picture

first thing I noticed was the beam pattern. I road with the IQ-X for the first time last night and holy shit, that's impressive stuff. I had no idea what dynamo was gonna be like in real life and was totally blown away

Endpoint wrote:
turdly buttways

Wed, 11/01/2017 - 12:37
ergott
ergott's picture
(Reply to #1504)

Tail Hook Lengthener wrote:
Well any dynamo light which advertises their 700 lumen count doesn't really know shit.

That was my red flag too.

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Wed, 11/01/2017 - 12:47
Goddamnit Gunther
Goddamnit Gunther's picture

Could you elaborate on that? Is this about lumens vs lux? I just don't know anything about it and would like to know more

Endpoint wrote:
turdly buttways

Wed, 11/01/2017 - 13:03
kmcdon
kmcdon's picture

IIRC lumens is a measure of how bright the light source is, whereas lux is a measure of how much light actually gets cast onto (object)

Like, lumens doesn't take into account the beam pattern and lens design, whereas lux does.

(I think.)

Wed, 11/01/2017 - 13:08
ergott
ergott's picture

Lights advertised by their lumens are all in a brightness war. Ni mention of the beam pattern quality. Having a million whatever focused on a narrow spot is easy to sell as better.

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Wed, 11/01/2017 - 13:37
iwillbe
iwillbe's picture

I just stick with the Imperial unit: Horse-candles

Wed, 11/01/2017 - 13:48
Andrew_Squirrel
Andrew_Squirrel's picture
(Reply to #1509)

shane.rrr wrote:
Yall see this? I like the idea but fuck thats expensive.

https://www.sinewavecycles.com/products/sinewave-cycles-beacon

At first I scoffed at this light but now I am starting to realize its appears to be optimized for cyclists that are doing adventure bikepacking and need a durable dynamo powered symmetrical light for singletrack riding. Bonus is being able to run it off battery (for when puttering along on the trail and not generating enough juice) and charging your navigation tool / battery pack when on the road.
I'd wager that the light is more durable than the Luxos U and probably has better charging circuitry in addition to being potted inside.
But also: ugly as hell and that switch is a terrible idea

Wed, 11/01/2017 - 15:02
Goddamnit Gunther
Goddamnit Gunther's picture

Yea what's the point in a bulletproof light with a switch that you're gonna break off the first time you wreck

Endpoint wrote:
turdly buttways

Wed, 11/01/2017 - 15:46
heavymetal
heavymetal's picture

Local adventurebro has just acquired one for the Hunt 1000. I'll get a report when all is said and done.

Wed, 11/01/2017 - 16:59
Andrew_Squirrel
Andrew_Squirrel's picture

They probably should have gone with a rocker switch instead of the toggle

Wed, 11/01/2017 - 17:03
ergott
ergott's picture

FYI

Merry Sales told me that Kasai is made in the same factory as Shutter Precision. They dropped SP in favor of Kasai, but they didn't say why.

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Wed, 11/01/2017 - 17:18
Goddamnit Gunther
Goddamnit Gunther's picture
(Reply to #1514)

kmcdon wrote:
IIRC lumens is a measure of how bright the light source is, whereas lux is a measure of how much light actually gets cast onto (object)

Like, lumens doesn't take into account the beam pattern and lens design, whereas lux does.

(I think.)

From the little bit I've read, 1 lux=1 lumen per sq meter. So a 100 lux light puts out 100 lumens per meter? That seems like a fuck ton

Endpoint wrote:
turdly buttways

Wed, 11/01/2017 - 18:16
crowding
crowding's picture

Lumens correlates fairly directly to number of photons emitted globally (weighted by typical human sensitivity according to wavelength) If you change the lens on your light you aren't changing lumens.

Lux is the one that the stvzo spec are built around, "how bright is the road lit up" The problem that is that the rating is defined in terms of a light projecting onto a flat plain with the light set at a perfect angle. If you angle your light down the lux goes up because it's projected on a nearer (so smaller) surface. Two lights can be the same stvzo lux rating but one might put out a lot more light and use it to extend the hotspot further out. Because it depends so much on terrain, lux does do not make a lot of sense if you are shopping for a symmetrical beam MTB light.

Candela is the one that measures "how hot is the hotspot" controlling for distance. If you have a 1 candela light and point it at a surface 1 m away at right angles to the beam, the surface will be lit at the center of the hotspot with 1 lux. More generally lux = candela / distance^2 * sin(incident angle). If you swap for a tighter lens you increase candela while lumens stays constant.

If visible light is like water, then think of a fire engine. Lumens is how fast it pumps water, gallons/sec.
Candela is how intense the spray is, like much water it can spray through a standard-size opening at some standard distance.
Lux is how wet some specific patch of building surface gets, like gal/sec/m^2, depending what you're aiming at

if you want a wide beam pattern you might pick a candela value that lets you see far enough ahead and then maximize the lumens.

Wed, 11/01/2017 - 20:18
crowding
crowding's picture

The highest efficiency LED I see on digikey rates 212 lumens/watt. If we take that one then (750 lm @ 3w) corresponds to ... 112% combined luminous and optical efficiency. Hmm.

They don't say with what dynamo, though. It might be possible to tune the power supply to extract more than the nominal 3 W at low speeds like they're suggesting. Would also mean higher drag, worse mechanical efficiency.

Wed, 11/01/2017 - 20:19
JUGE FREDD
JUGE FREDD's picture

It's normal to get ~4W out of a modern dyno at a reasonable speed with a reasonably fancy circuit

some Voltage Doubler trickery is possible to get way more, but you absolutely pay for it in resistance and chunky vibration http://pilom.com/BicycleElectronics/DynamoCircuits.htm

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Wed, 11/01/2017 - 21:34
JUGE FREDD
JUGE FREDD's picture
(Reply to #1518)

ergott wrote:
FYI

Merry Sales told me that Kasai is made in the same factory as Shutter Precision. They dropped SP in favor of Kasai, but they didn't say why.

"Kasai" is yet another fake Merry house brand, not a real company

It would be reasonable that they're now buying pallets of them whitelabeled from the factory on direct terms (like Supernova or BioLogic/Tern) instead of smaller quantities wholesale through one of the factory agents like before

but there was also rumor of a factory shakeup at SP in the last couple years, so these could be coming off an old production line (notable that the TA hubs are missing from their lineup)

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Wed, 11/01/2017 - 21:48
Endpoint
Endpoint's picture
(Reply to #1519)

Vic at SP wrote:
Kasai hub is something else. It is a pirate version. We already brought a suit against the maker in Taiwan. It is risk to use this hub. It is the first year for the hub. Quality must be not stable…

I mean whatevs... but Merry Sales are either lying or being duped.

Wed, 11/01/2017 - 22:17
Endpoint
Endpoint's picture

Also... I swear my edelux runs just a little brighter and fires better as walking pace hooked up to the SON over the SP. Am I nuts?

Wed, 11/01/2017 - 22:18
kmcdon
kmcdon's picture

Are we talking about the same kaisei that has tubesets on compass' website?

Wed, 11/01/2017 - 22:24
Endpoint
Endpoint's picture

Negative

Wed, 11/01/2017 - 22:57
ergott
ergott's picture
(Reply to #1523)

Endpoint wrote:
Also... I swear my edelux runs just a little brighter and fires better as walking pace hooked up to the SON over the SP. Am I nuts?

My IQ definitely fired up a bit sooner with Son over SP. Same thing, walking speeds so I'm not too concerned.

Schmidt has to get centerlock 15mm going. I wonder if it's an internal design limitation. Don't know what bearing ID they use.

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Thu, 11/02/2017 - 06:10
ergott
ergott's picture
(Reply to #1524)

JUGE FREDD wrote:
but there was also rumor of a factory shakeup at SP in the last couple years, so these could be coming off an old production line (notable that the TA hubs are missing from their lineup)

I hope that's not the case. I have to build a wheel for a shop and since the 6 bolt QR in black was out of stock I told them I can get the Kasai instead.

Any other US dist for SP?

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Thu, 11/02/2017 - 06:13
JUGE FREDD
JUGE FREDD's picture

dude you can buy wholesale from SP yourself cheaper than Merry, and shipping from Taiwan isn't an issue

IIRC cheaper than their price on the Kasai crap too

and you better believe Merry picked that name for deliberate confusion with the actually-Japanese Kaisei

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Thu, 11/02/2017 - 15:33
ergott
ergott's picture

Looking into...

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Thu, 11/02/2017 - 16:15
ergott
ergott's picture

I'm putting an order together for SP hubs. email me if you want in. I have to do it in the next day or two (tops).

If someone on here did it, I'd probably like it. Since it was done by someone I don't know, they're a fucking idiot.

Tue, 11/07/2017 - 18:36

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