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  1. #1
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    Posts on night vision

    2000 Montague CX, I do not recommend it, but still ride it.
    Strida 3, I recommend it for rides < 10mi wo steep hills.
    2006 Rowbike 720 Sport, I recommend it as an exercise bike.
    1996 Birdy, Recommend.
    Wieleder CARiBIKE (folding), decent frame.

  2. #2
    Mad bike riding scientist cyccommute's Avatar
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    The instructables link is okay, although 500 lumens is pretty weak when it comes to high intensity light. A 20 W halogen will give you more than that at nominal voltage and there are several cheap commercially available LED flashlights and dedicated bicycle LED systems that will give you more in a smaller package.

    The other two links are great if you want to go look at stars. Not so good in the real world of riding at night where the goal is not just to see where you are going at something more than a crawl but where you might actually want to be seen by large metal vehicles that have the potential of making a memorial grease spot in your honor. Even a relatively weak light is going to play hell with your night vision. Anything over a few lumens is going to blind you outside of the light's circle.
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
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  3. #3
    Zoom zoom zoom zoom bonk znomit's Avatar
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    This instructables comes up now and then. If you take the time to read through all the comments most of its failings are pointed out. (over blown lumen values, wrong assumptions about night vision)

    I'm not sure if it was there or on a similar build where the comment was along the lines of "by far the best light on the trail, until another light came past me and I couldn't see anything".
    Kiwi Randonneurs Gran Turismo series. March 1-8 2015
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  4. #4
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    The interesting part to me is the use of Cyan leds rather than white leds or halogen. I bought a cheapy UV flashlight which was more of a violet. Anyway I was surprised at how good it was as a general purpose flash light.
    2000 Montague CX, I do not recommend it, but still ride it.
    Strida 3, I recommend it for rides < 10mi wo steep hills.
    2006 Rowbike 720 Sport, I recommend it as an exercise bike.
    1996 Birdy, Recommend.
    Wieleder CARiBIKE (folding), decent frame.

  5. #5
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by geo8rge View Post
    The interesting part to me is the use of Cyan leds rather than white leds or halogen. I bought a cheapy UV flashlight which was more of a violet. Anyway I was surprised at how good it was as a general purpose flash light.
    It all depends on what you want to do with it. Closed course with no other source of light at a slow speed? The cyan would probably be okay. Throw another light source in there or make the course rugged and you'll find the limit of shorter wavelength light and the human eye pretty fast.

    If you want to use your lights in an urban setting for commuting, cyan or UV will be impossible to see against any kind of light background. UV isn't called 'black light' for nothin'

    Stick with white...the more intense the better.
    Stuart Black
    Solo Without Pie. The search for pie in the Midwest.
    Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
    Days of Wineless Roads. Bed and Breakfasting along the KATY
    Twisting Down the Alley. Misadventures in tornado alley.
    An Good Ol' Fashion Appalachian Butt Whoopin'.

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