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Thread: Faster than the speed of light...

  1. #1
    Enlightened redswr's Avatar
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    Default Faster than the speed of light...

    Hey everyone, i ride/race dirtbikes and was looking at a helmet light set up that would make it to where i actually have some time to react at 50/60mph in the middle of no where, i've seen lots of stuff dirtbike specific thats way outta my budget though. I was thinking about getting a 2AA MiniMag and using a TerraLux drop in (140Lumens) so i can take it off and use it around camp too but i don't know if that'll be anywhere near enough power. Right now i've just got a 12v/35w incodescent for a headlight but it shuts off if i wreck or stall (reason for wanting a helmet light). Thanks guys!
    Enlightend? Hmm... almost!

  2. #2

    Default Re: Faster than the speed of light...

    what's your budget and runtime requirement?

  3. #3
    Enlightened redswr's Avatar
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    Default Re: Faster than the speed of light...

    $100 and the race i'm looking at doing next is from 10am to 10am so i'd say like 10 hours?
    Enlightend? Hmm... almost!

  4. #4
    Flashaholic* psychbeat's Avatar
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    Default Re: Faster than the speed of light...

    I use a spark ST6 460NW paired with a dual XP-G bar light (p60 flashlight on a mount)
    for downhill mountain biking. we hit some pretty big jumps at night and lots of tight
    singletrack with berms and 10ft drops. I still would like a bit more power but ~500 on
    the head and 500 on the bars works pretty well lumens wise. the spark fits on my fullface
    helmet under the visor pretty well.

    Id also consider the Magicshine bike light. that one has a strap or bar mount option and
    a built in battery pack + charger. Id use one of these but I only like neutral tinted lights
    and already have a bunch of 18650 lights.

    plenty of options out there!

  5. #5
    Flashaholic*
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    Default Re: Faster than the speed of light...

    I'd be wary of mounting anything substantial to my helmet. Helmets aren't designed to protect your brain with a metal cylinder bolted to them.

    If you have wrecked you have little influence over what is going to happen next, and if you have stalled then you aren't moving with much speed.

    My suggestion is a bike light bolted to your handlebars - quite a few of them around, and with a biggish battery pack you can get decent illumination and run time.

  6. #6

    Default Re: Faster than the speed of light...

    Excellent point, I've always thought it was extremely dangerous how the entire force of an impact (if on the flashlight) would be compressed into a very small surface

    Quote Originally Posted by Gregozedobe View Post
    I'd be wary of mounting anything substantial to my helmet. Helmets aren't designed to protect your brain with a metal cylinder bolted to them.
    TK40 Round-Up Thread - very image intensive!

  7. #7
    Flashaholic* psychbeat's Avatar
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    Default Re: Faster than the speed of light...

    Quote Originally Posted by Gregozedobe View Post
    I'd be wary of mounting anything substantial to my helmet. Helmets aren't designed to protect your brain with a metal cylinder bolted to them.

    If you have wrecked you have little influence over what is going to happen next, and if you have stalled then you aren't moving with much speed.

    My suggestion is a bike light bolted to your handlebars - quite a few of them around, and with a biggish battery pack you can get decent illumination and run time.
    Ive crashed with my light strapped on pretty bad a couple times and the light slipped off or wasnt really an issue.
    1000s of people are riding bikes (moto and pedal) with lights on their helmets. A fullface helmet is pretty dang
    thick and a small aluminum lamp is unlikely to make a difference IMHO - YMMV

    also, a Head/Helmet light is better in turns - especially in tight turns as you need to see where you want to go
    not always where the bars are pointed- especially with counter-steering!!

    Tight trails at night are unrideable if you are really going for it (racing!!)
    with only a barlight in my experience (Ive ridden a bit of moto too)

  8. #8
    Flashaholic ifor powell's Avatar
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    Default Re: Faster than the speed of light...

    Nothing I know of fits the bill very well at that budget. Magicshine is your best bet but you will need multiple batterys for 10 hours on full power.

    A decent homemade would be do-able at that that price, maxflex and the 7 up xpg board can put out a lot of light and should work off the bikes power if 12V. 6V would be too low though, but would probobly go directly into a magicshine if you patched one up. Although I would want to put a big capacitor across the input in either case. The major advantage you have is plenty of airflow so lots of good cooling withough needing too mach weight.

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