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Thread: Quad SSC P7 Helmet Light ... Design, Build, Test

  1. #1
    Flashaholic
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    Default Quad SSC P7 Helmet Light ... Design, Build, Test

    This light was designed for caving. The four P7's allow ~2500 lumens for a short time for photographs. Running at 250 milliamp it is a good working light but a bit heavy. Always compromises!



    Rear touch switch and TaskLED hipFlex driver (ghosted)



    Beam shots:
    http://www.flickr.com/photos/caverti...7612843116588/

    The size is 3" (75mm) diameter x 2.1 (53) deep without helmet clip.
    I will get a weight soon. Must go make chips!

    Weight ~ 350 grams
    Last edited by Mick; 02-16-2009 at 01:31 PM. Reason: added weight

  2. #2
    Flashaholic Tidra's Avatar
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    Default Re: Quad SSC P7 Helmet Light ... Design, Build, Test

    ~350g, uauuuuuuuuuu, that is toooo much.... tor the headlamp...

    read this post

    http://www.candlepowerforums.com/vb/showthread.php?t=220664

    post 14 and down,... 160g would be acceptable for the headlamp



    with all do respect, I really don’t se a point of building a headlamp so strong, except for the fast moving activities like biking and skiing, but for the caving and running,… of course I don’t know how much light is needed for photographers



    you must realize that for that amount of light you must provide quite a big battery pack to run it for some time al full power, otherwise there is a lot of other setups, that could give you a good amount of light, they are smaller in size weight…

    if you use 3 SSC P7, you could get a good amount of light and smaller headlight and battery pack,…

    but of course just IMHO

    otherwise I like your design and idea

    cheers
    Iztok

    Last edited by Tidra; 02-16-2009 at 02:27 PM.

  3. #3
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    Default Re: Quad SSC P7 Helmet Light ... Design, Build, Test

    ,Ö of course I donít know how much light is needed for photographers
    I have been working with a very good cave photographer and very often they drag many pounds (kilos) of gear to light up a large area. You have to pay for what you get. I am also working on a three P7 light that will use smaller reflectors and be half the weight. You would need infinite designs to please everyone.

  4. #4
    Flashaholic* PhantomPhoton's Avatar
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    Thumbs up Re: Quad SSC P7 Helmet Light ... Design, Build, Test

    I like it.
    What sort f power supply do you run it from?

    A bit on the heavy side for prolonged use perhaps, but 3/4 of a pound isn't terrible. Be sure and give us a look at the smaller unit when you get it done.

    Thanks for sharing.
    1) Neutral white, it's the new black. Heck, it's not even "new" anymore.
    2) User Interface... KISS.
    3) Proprietary cells and battery packs - Just say NO!

  5. #5
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    Default Re: Quad SSC P7 Helmet Light ... Design, Build, Test

    I will do the initial testing with five 18650 Li-Ion's. The battery pack weighs an additional 235 grams (8.3 oz.) and is rated at 18.5 volt, 2400 maHr. This battery fits in a Petzl Mega battery case. It would give over 8 hours use at 250 ma.

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