Author Topic: LED headlights - Yes or No?  (Read 1456 times)

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Offline MAN OF BLUES

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Re: LED headlights - Yes or No?
« Reply #25 on: June 25, 2018, 05:50:42 pm »
A quick search yielded:

Lumens = a unit of brightness

Color Temperature = a way to describe the appearance of the light, expressed in degrees Kelvin on a 1000 to 10000 scale

As you move up the color temperature scale the color composition of the light moves from reddish to blueish. Right around 6000K is supposed to be the most pure white.

The bulbs in the link Ted posted are rated at 147000 lumens which is an insane amount of light. They also consume nearly 1000W of power......

For purposes of perspective, standard halogen bulbs draw ~ 45W/65W Low/High beam and put out 700/1200 lumens Low/High beam.



 :D

so, please explain how these can be utilized, on a motorcycle, that produces 14v DC, power, and mediocre ampacity, when the lamp supposidly (by the laws of electric current) requires 714 amps of power....
 :rotflmao: :rotflmao: :rotflmao:



hint; transformers.... low current draw, high current output...

also
when dealing with the efficacy (yes, that is a word), of LED lighting, the figures noted, unless fully noted as to 'actual' power consumption, are representative of "comparison" of light output vs. that of incandescent technology.

having worked for GE back in the early 80's, and developing Halide lamp technology for in home use, I do understand a bit of the "measurement" confusion people have... I was going to link some stuff that really breaks this down, but instead found a very simplified version that may be easier for most to understand...
here;
http://eco-revolution.com/lumens-and-light-output/
 :great:

now, as Ted's posted products are simply 'mass dumping of product' for cheap, you get what you pay for... and most times, it ain't what you would expect... as they don't have any 'data' on power consumption, and their rating are imho skewed, and hyped up...
take this product as an example of "correct" data, and as I know these people have been in this market, (read the ratings), they sell something described well, and back it up...

http://stores.advmonster.com/h4-r3-led-headlight/

it costs slightly more, but they ain't lying to ya to make you spend $13, which if you aren't happy, they hope you would write off...

« Last Edit: June 25, 2018, 06:35:05 pm by MAN OF BLUES »

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Offline connie_rider

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Re: LED headlights - Yes or No?
« Reply #26 on: June 25, 2018, 11:02:27 pm »
I think Cree had a typo on their add. I think they intended to say the light was 14,700LM, not 147,000LM.
147,000LM is an unreal number....

"Regardless": I'm asking if 6000K would be better/whiter than 6500K,
   and suggesting {whatever the correct Lumen value is for their bulb} maybe it would be less glaring?

Ride safe, Ted

Lastly, I agree, ya get what you pay for, but maybe, "just maybe",,, this is a good one?
« Last Edit: June 25, 2018, 11:34:11 pm by connie_rider »
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Offline MAN OF BLUES

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Re: LED headlights - Yes or No?
« Reply #27 on: June 25, 2018, 11:32:13 pm »
6000k-6500k color is so tough for (your and my old) eyes to differentiate, that it's not a case of better or worse, in reality when the lights are being operated, what you see reflected from the road, and also the roadside (where massive amounts of the UV spectrum are "swallowed" by the vegetation) makes little difference... once you start upping to 7000 or above, you start seeing "blues" in the light reflection, and then after that it becomes more Violet...
pretty much the 6500-6000 range is the most "usable" visible light an eye responds to.

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Offline RoadKillHeaven

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Re: LED headlights - Yes or No?
« Reply #28 on: June 26, 2018, 06:42:25 am »
Sadly, not many of us understand how reflectors work and how light spectrum deflected from any given surface.
OE manufactured reflectors are based on extensive R&D, designed to work in a specific light spectrum.
But we, the motorbikers-know-it-all, defy the established science of light and do what we do best. We disregard the common sense.
Also, as it has been noted in posts above, the older you get the more sensitive your retina becomes.
I can stare at those profoundly important, for nerds only, charts all year long. They will never help my eyes not to hurt when I look at maladjusted aftermarket, largely unlawful, LED or HID conversion kits know-it-all enthusiasts install in their vehicles.

Cheers...
« Last Edit: June 26, 2018, 06:58:01 am by RoadKillHeaven »

Offline Gitbox

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Re: LED headlights - Yes or No?
« Reply #29 on: June 26, 2018, 12:48:05 pm »
Quote
(by the laws of electric current) requires 714 amps of power....

MOB, I think you're off by a factor of ten in your current calculation: 1000W/14V = 71.4A, not 714A.  ;)
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Offline turbojoe78_MA

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Re: LED headlights - Yes or No?
« Reply #30 on: June 26, 2018, 01:05:26 pm »
Have ever seen a motorcycle with maladjusted HID or LED headlight ? If you have, you should understand, maybe not, how painful the glare is.
Perhaps those who willfully use off-road only LED or HID cartridges in headlights will read you plea and change their minds.  But like someone stated, in a different post, thanking god for freedom of choice to do what he pleases, I doubt anyone would show empathy.

Roadkill, that's kind of a stretch, even for you.  Nowhere in the post you mention did I advocate for doing anything to negatively effect the safety of other drivers.  Whether I wear shorts, or not, only affects my safety, and my safety only.  And as for common sense, ya, really no need to go there.
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Offline MAN OF BLUES

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Re: LED headlights - Yes or No?
« Reply #31 on: June 26, 2018, 08:13:10 pm »
Quote
(by the laws of electric current) requires 714 amps of power....

MOB, I think you're off by a factor of ten in your current calculation: 1000W/14V = 71.4A, not 714A.  ;)

 :rotflmao: :rotflmao: :rotflmao: :rotflmao: :rotflmao:

yep, my bad.... my mind was still reeling from trying to figure out where the lumen/watts figure in the other post quoted came from...
and i 'double tapped' the silly zero button...
("147000 lumens which is an insane amount of light. They also consume nearly 1000W of power......" )

 :rotflmao: :rotflmao: silly me... phe' 71.4 amps.... nooooooo problem.... ::) :rotflmao: :rotflmao: :D

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Offline Mabupa

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Re: LED headlights - Yes or No?
« Reply #32 on: June 27, 2018, 05:06:25 am »
Pretty much any chart out there will show that 4300k offers the highest lumens (light output) and the lumens start to drop as you increase kelvins. Obviously, most don’t like the yellow looking headlights, so they sacrifice some lumens (light output) to get the nicer loooking (higher kelvins) whiter/blue-ish lights. My explorer had halogen projectors that used shutters that moved up and down via the activation of solenoids when high beam was activated and produced really clean lines with a quality HID kit. I tried that on my hayabusa and it was, let’s just say, not good. I ended up opening the headlight and modifying all the internals to install 2 H1 bixenon projectors in it and that thing is like a stadium. I now have two low beams and two hi beams. All that being said, it’s still not a perfect setup on a motorcycle, because you have a perfectly horizontal sharp line when the shutter is down (low beam), so imagine what happens to that cutoff line when you lean your bike into a corner :-[. I’ve spent countless hours and thousands of dollars playing with that stuff and I’m pretty happy with the stock light output on my “new to me” Concours. It sure beats the .99c Flashlight Suzuki put on my DR650 as a headlight. :D now, LEDs I’m clueless about.

Offline Gerry

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Re: LED headlights - Yes or No?
« Reply #33 on: June 29, 2018, 05:00:20 pm »
This has turned out to be a very interesting discussion. I really appreciate how generous everyone is being with your knowledge and opinions,  I've learned a ton of stuff about headlights that I didn't expect to. 
One thing I learned is that there are a lot more options than I had imagined, so I decided to make the leap to try LED's, but take the cheap way out.  I'll start with these:
https://www.ebay.com/itm/H4-HB2-9003-980W-147000LM-CREE-COB-LED-Headlight-Kit-High-Low-6000K-Bulbs-Power-/263588030843?_trksid=p2385738.m4383.l4275.c10

Thanks to connie_rider (Ted) for the link. 

Please don't stop posting suggestions, ideas, information and opinions to this thread, I'm sure others will find your input as useful as I do.

I'll report back when I have had a chance to test them.

Thanks again,

Gerry