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  1. M

    Suggested Bike Lighting Systems for Newbie? Plenty of Pictures too!

    I went through the process of prototyping a bunch of bike lights. You might take a look for ideas. The pages are well documented with lots of photos. http://www.krabach.info/bike_light/bike_light_project/intro.html
  2. M

    Red LED for bicycle tail light

    I did some experiments on bicycle tail lights that were very bright. I used two types of red led's from DX. The SKU 1776 and the 11017. See my project pages at: http://www.krabach.info/bike_light/bike_light_project/intro.html The specific tail light projects are prototypes 10 and on. I also...
  3. M

    Rear Red LED vs rear filtered White.

    Maybe something in my site might give you some help. Although some of the LED drivers/regulators seem to be out of stock at DX. I tried several combinations of white and red LEDs and drivers. http://www.kayakaccessri.info/krabachwebsite/bike_light/bike_light_project/intro.html The red flashers...
  4. M

    help me choose the reflector/optics

    The beam is narrow, but it still is a good beam. From my fussing around with diffusers, the only ones that I found good are the ones that mate with the L2 optics. As an experiment I just now tried taping (clear scotch tape) the diffusers used on prototype 2 on the front of the prototype 14...
  5. M

    help me choose the reflector/optics

    I have used the DX-1920 in one of my prototype bike lights. http://www.kayakaccessri.info/krabachwebsite/bike_light/bike_light_project/proto14.html I find that they are a little too narrow for bike riding. I like another DX tri-optic lens that gives me a little wider beam. All the beam shots...
  6. M

    Cheap AA torch with wide beam for bike visibility light

    I have just received the same 606A light in the Q5 version. I think the beam is just too narrow for a general visibility light. The beam is even narrower than the 606A P4 version. It is very very bright and draws 1400ma using 2xAA batteries. It only lasts 1 to 1.5 hrs which I dont think is...
  7. M

    Commuter bike light build??

    I found that a single Q5 running at about 1 amp is adequate for backup night riding, or roads that do not have much traffic. I found that I needed 3 Cree P4 to do the job on roads that had serious traffic. The best combination that used a Maglite head is this link...
  8. M

    Rear Light - Design Considerations

    I have some information that you might be able to use considering the options for a good rear light. You may have found them elsewhere on this site but here is the link. You want to look at the later Prototype lights 10 and on. The lights out did any commercial I have seen lately or on the...
  9. M

    Decent rear light driver?

    I went through a set of experiments to determine what you are asking. As to the multimode drivers, I found that since they were grouped into three sets, setting up the mode you wanted was fairly easy with a little practice. And the drivers I prefered remembered the last setting when turn back...
  10. M

    New beamshots of my bike light project.

    More prototypes finished. Mainly rear flashers. Superflash and other commercial rear flashers move over, these homebrew lights make you squint. But that is the point, I have been testing various light combinations late at night and drivers really move over. I have settled on a commercial...
  11. M

    Rear flashers for My Bike Light Project

    Another rear flasher prototype (Prototype 13) finished with more beam shots. Added Prototype 14 a variation on triple Cree 3 watt front light. Added note: these experiments document all the parts that I have purchased of the internet, mostly dealextreme.com, ledsupply.com, and taskled.com. So...
  12. M

    Rear flashers for My Bike Light Project

    From my experience with proto 11 and the white LED thru red cover, I will stick to the red LEDs. The grinding is probably difficult if you dont have a bench grinder. It is pretty easy to grind the aluminum base, but is a very slow process since alot of heat is built up. And the star LED is...
  13. M

    Rear flashers for My Bike Light Project

    The white LED on proto 11 was to check out a non adjustable regulator and fitting components into a Vistalite case. It was the result of Proto 10 being great, but not finding a case for it. I had assumed that I could use a red cover plate with the white. Note that the regulator used has an...
  14. M

    Rear flashers for My Bike Light Project

    Yes, it it bright from the back but, I tend to ride the back of the pack. So cars see me first. For prototype 10 and 12, I get about 6 hrs runtime. When the battery drops to about 1.15 v the flashing stops and the light stays on steady. I think it is from the fact that I set the regulator to...
  15. M

    Combination LED taillight / CPSC reflector?

    Removing the SOLAS tape is easier than the metalic tape because it is rubber tape. The Reflexite tape is the metalic type. I had to remove some SOLAS from a kayak and found that I could peel most of it off with difficulty, and the residue could be removed by a hydrocarbon solvent. I used white...
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