LED Headlight?

Discussion in 'The Garage' started by Zecatfish, Apr 15, 2009.

  1. Zecatfish

    Zecatfish XTique Rider

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    Ok so the lighting coils on alot of bikes is moderate at best.
    I've started researching an LED headlight array.
    So far I've found one website that details it somewhat but he is doing it on an electric scooter thing.
    Its the same principle so why not do something similar my a bike.

    The Plus side:
    1. can use a plastic lens,
    2. less power draw and more light
    3. less weight
    The down side:
    1. Its not going to be DOT legal. (how many cops look at it anyway?)
    2. Its a pure DIY project,
    Heres the only website I've found so far.
    http://www.instructables.com/id/LED_Motorcycle_Headlight/

    So has anyone else tried this as a power saving option?
    #1
  2. MotorradMike

    MotorradMike MIL-TFD-41

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    White LEDs really aren't white. They use 3 elements to produce light that appears white to your eye. If you illuminate a photograph with a white LED you will find lots of colours missing.

    So headlight LEDs just aren't good enough yet(and may never be) for illumination.

    The yellow and red ones are fine for signal lighting but that's a different application.
    #2
  3. Anorak

    Anorak Woolf Barnato

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    Um, no. White leds use a phosphor to convert the output of a blue led to white.
    #3
  4. bigberm

    bigberm Adventurer

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    #4
  5. RandyB

    RandyB .

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    The military uses them but they're 24V. They will melt your eyeballs. I wanted one but the inspection process coming out of theatre was too thorough....
    #5
  6. Zecatfish

    Zecatfish XTique Rider

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    Now that would be just about right. :clap
    Maybe a little overkill.
    Thanks for the link.
    #6
  7. MotorradMike

    MotorradMike MIL-TFD-41

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    OK, you're right too. I'm a bit behind.

    http://en.wikipedia.org/wiki/Light-emitting_diode#White_light

    I'd still be concerned about missing wavelengths. I wonder if the military one relies solely on LED light or supplements with something else. I suspect they won't tell us.
    #7
  8. Zecatfish

    Zecatfish XTique Rider

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    So one of you electronic wizards help me out here.

    20Watt White 16 Chip LED 1000Lm Light


    [​IMG]
    So how many of these type LED's would you need to be the equivalent to a Halogen 60watt bulb?

    I'm thinking that it will need a reflector in front of the LED to reflect the light back across the reflector of the bulb/shell.
    #8
  9. snackdaddy

    snackdaddy Adventurer

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  10. Zecatfish

    Zecatfish XTique Rider

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  11. Zecatfish

    Zecatfish XTique Rider

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    Truck-Lite's 12v LED Headlamp

    [​IMG]Item# 27250C
    Regular price: $863.33
    Levine Price: $455.99

    That is one expensive light, I think I'll go on with the build my own idea.

    #11
  12. DirtRider1965

    DirtRider1965 Rider

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    #12
  13. Jbwiden

    Jbwiden Adventurer

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    I made these for my mountain bike 1000lm at 17 Watts. I also made it so it has a modulate mode for daytime riding on the street. Next I will fit these to my bike as extra or make a new one specifically for the bike. This uses Cree XRE leds.

    [​IMG]
    [​IMG]

    Jbw
    #13
  14. Zecatfish

    Zecatfish XTique Rider

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    Cool,
    So what did you use for the lens and reflector/refractor?

    I've got one of these
    [​IMG]
    But its got a busted lens, I was thinking of using it as the basis for the new light. Just replace the busted lens with plexiglass.
    #14
  15. Jbwiden

    Jbwiden Adventurer

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    #15