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Best (real) Lumens for a buck? - Cave exploring

  • Nuppi Thursday, September 13, 2012 10:30 PM Reply
    Hi all.

    There are loads of caves around here which i like to explore.
    So i absolutely need the most light possible.

    I have bought about 20 different 18650 flaslights here on DX, with lumens 600 - to 2000, with 1x18650 battery.
    They are all good for every day usage, but not too great actually.

    Ok now im poor and understood the lumens i bought are bogus. Shame.

    Flood/throw ratio would be ideal to have around 35/65 but thats not a big deal at the end.

    Can you recommend me something?
    I have looked at:
    http://www.dealextreme.com/p/tr-j12-cree-xm-l-t6-5-led-4500lm-5-mode-memory-white-light-flashlight-2-x-26650-3-x-18650-112817

    And

    http://www.dealextreme.com/p/fandyfire-uv-s5-xm-l-t6-3-mode-3000lm-3-led-white-flashlight-w-strap-yellow-4-x-18650-120679

    No idea if those would rock.
    Please help.

    Thank you.

    Edit. Under 60 bucks preferred.
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    post edited by Nuppi on 9/13/2012 at 10:32 PM
  • gasbag11 Top 10 Forum Poster Friday, September 14, 2012 8:29 AM Reply
    I don't know about the first light you mentioned but the fandyfire uv-s5 puts out a LOT of light. You can see videos on youtube. Actual lumens is probably closer to 2000 lumens, but it's still a beast. You can also check out Sky ray King. Same light, different name.
    NO! I don't know why DX screwed up the site so badly.
    Ask them.
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  • sheepish Top 10 Forum Poster Friday, September 14, 2012 10:14 PM Reply
    Are your caves really big, that you want that much light?

    http://alvarezphoto.typepad.com/.a/6a00e551a5897b88330115724da2b7970b-800wi
    img src: http://alvarezphoto.typepad.com/.a/6a00e551a5897b88330115724da2b7970b-800wi

    Remembering 30 years.
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  • TaaJau Tuesday, September 18, 2012 12:03 AM Reply
    I think, FandyFire UV-S5 should be a very good... I have seen how brightly shines Sky Ray King (Which is very similar to FandyFire UV-S5). It is very good and bright. And it is very compact for 4x18650 batteries flashlight.
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    post edited by TaaJau on 9/18/2012 at 2:19 AM
  • Nuppi Friday, October 5, 2012 9:34 PM Reply
    Awesome pic sheepish.

    The fandyfire seems great. but the other has more lumens on paper so i dont know.
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  • gasbag11 Top 10 Forum Poster Saturday, October 6, 2012 7:08 AM Reply
    Hi Nuppi. I'm not an expert on flashlights, but I have learned that putting 60% more leds in a light, will not necessarily give 60% more lumens. ( my math stinks, but 60% should be close ). In actuality these lights will probably not be much different in brightness. Adding more leds generates more heat, so the output may be restricted.

    @sheepish knows much more than I do and can explain it better. ( he should be along shortly).

    Each light has advantages so it's up to you. My only advice is to get the best "protected" batteries you can. General opinion seems to be panasonic or sanyo, which are very close to their rated capacity.
    NO! I don't know why DX screwed up the site so badly.
    Ask them.
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  • sheepish Top 10 Forum Poster Sunday, October 7, 2012 3:56 AM Reply
    Hi, I'll have to get back to this tomorrow. At this stage I'll just say that 4500lm would not be too much for the cave I was in today.
    Remembering 30 years.
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  • sheepish Top 10 Forum Poster Sunday, October 7, 2012 4:48 PM Reply
    Getting auto links for sku.112817 and sku.120679...
    Remembering 30 years.
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  • sheepish Top 10 Forum Poster Sunday, October 7, 2012 5:03 PM Reply
    OK, so you're not looking for a good headlamp for general caving (moving around, lighting up features and small to medium chambers, etc), but a bright hand held light for lighting large chambers? Out of those two options sku.120679 seems to have quite a good reputation for being bright. Exactly how bright, I don't know. It will be easier to cart around in a cave than the other torch (sku.112817 which will apparently produce closer to 2700lm) but will be less use against the giant cave vampiric demon things that we all know populate big caves because it's short and dumpy.

    Sanyo batteries are very good and hold their voltage very well.
    Remembering 30 years.
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  • gasbag11 Top 10 Forum Poster Monday, October 15, 2012 7:33 AM Reply
    Has anyone noticed the HUGE flaw in sheepish's picture??

    BTW, is that Indiana Jones?
    NO! I don't know why DX screwed up the site so badly.
    Ask them.
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