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  1. #1
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    Nitelights 1600 Lumen Pre Release

    1600 Lumen Pacifier - Dept of Adventure

    Enjoy.

    To ensure your free worldwide delivery by end September, get your orders in now

    $139 USD inc free worldwide tracked delivery

  2. #2
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    Mj-872 in a slightly different body. The XPG S2 is available now so why not use this if its still in development.

  3. #3
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    Quote Originally Posted by moggy82 View Post
    Mj-872 in a slightly different body. The XPG S2 is available now so why not use this if its still in development.
    We are in production and will be shipped in 2-3 weeks.

    2000 Lumen version is in testing phase and that will take as long as it takes. It won't be rushed to suit a market.

    In reality our 1200 lumen is better that the 1600, especially for a helmet mounted light

  4. #4
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    nitelights, can you please post images of the rear where the power/mode switch are located.

  5. #5
    meep meep !!!
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    Quote Originally Posted by moggy82 View Post
    Mj-872 in a slightly different body. The XPG S2 is available now so why not use this if its still in development.
    Looks like it's got a reflector and flat glass lens, rather than an optic fitted on the front like the MJ872.

    So it should give a lot more throw and not so much spill.

    Funky looking light housing as well, but the price is nothing special.

    "RRP:US$299.00 Your Price:US$139.00 You save US$160.00" my foot.

    As if anyone in their right mind would consider paying $299 for it.

  6. #6
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    Quote Originally Posted by nitelights View Post
    1600 Lumen Pacifier - Dept of Adventure

    Enjoy.

    To ensure your free worldwide delivery by end September, get your orders in now

    $139 USD inc free worldwide tracked delivery
    Fact check...

    From the deptofadventure website:
    "For the Techies...

    Driven at 2.4Amps each LED produces 476 Lumens. We have tested an 85% efficiency of output which equates to 404lm per LED.

    404lm x 4 is an amazing 1616 Lumens!"


    Referring to the CREE datasheet for the XPG:

    1. The absolute maximum drive current for the XP-G R5 is 1.5 amps.
    2. At 1.5 amps, the theoretical output is roughly 470 lumens.
    3. 85% is actually a fairly reasonable de-rating taking into account heat and optical losses.

    Let's break down this statement:
    "run time is impressive for such a powerful light"

    Assuming the 2.4A was a typo and that 1.5 is more like it, let's assume about 90% efficiency in the controller

    Forward voltage for XP-G at 1.5 amps = 3.5V
    Power in each LED = (1.5 * 3.5) = 5.25 Watts
    Total power = 5.25 * 4 = 21 Watts
    Factor in 90% efficient controller = 21/0.9 = 23.3 Watts total

    Assume an average discharge voltage of 7.2V over the course of the battery running down (and assuming the controller efficiency remains constant, which it won't), so:
    Average running current = 23.3/7.2 = 3.2 amps
    Estimated run time on high = 5/3.2 = 1.5 hours (I'd call this best case at ambient).

    At this point, this game of pushing for higher and higher lumens has really reached a point of diminishing returns. Compared to, say, 1200 lumens, the 1600 lumen light is only a 33% increase. The eye does not perceive increases in brightness in a linear fashion, so as lumen levels increase it starts to take exponential increases in power to achieve substantial brightness increases. There's a big difference between 400 and 800 lumens, but between 1200 and 1600... not so much.

    What's worse is that they could have gotten 1200 real lumens out of this thing by driving at 1 amp, which would have pushed the run times up to 2.5 hours... but 1200 lumens is so yesterday..

    Kudos though for the reflector design. Looks pretty good.

  7. #7
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    Quote Originally Posted by pethelman View Post
    Fact check...
    .
    Pretty crappy render, no photos, no beamshots, chinglish writeup, dodgy specifications .... looks like a winner.
    DIY LED Bike Lights:
    A few Dynamo builds and some Small battery lights

  8. #8
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    Hello Znomit, our biggest fan.

    I am the furthest you could get from Chinglish and am all Kiwi, but I wouldn't expect anything else but tall poppy from you

    How can you make a comment when you don't know us and have never seen the product.

  9. #9
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    Quote Originally Posted by nitelights View Post
    How can you make a comment when you don't know us and have never seen the product.
    The dodgy spec, particularly on drive current, seems enough to me.

    @Nitelights; Keep in mind that many of the members of this forum have a vast and thorough understanding of how LED lighting functions. When a seller of an LED product makes performance claims that are in conflict with performance specs from component manufacturers and electrical principles we get pretty cynical about about the product. Spreadsheet marketing can take you far in some places, but makes you look the fool in knowledgeable circles.
    Last edited by Vancbiker; 09-02-2011 at 08:18 AM.

  10. #10
    Bigger is better!
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    Is it reflectors in there?

  11. #11
    metrotuned WoS
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    Nitelights, right on for being from the Bush! Love NZ. Anyways, what is the rating on the 1200 and 1600 lights you have offered, are those real output numbers? For example, magicshine is 900 advertised, 600 real. Care to explain, very curious on adding a light since I already run a magicshine on the bar. Was thinking of a Minewt 600 on the helmet but this may be the one hit quitter.
    #willofthesun and author of the most viewed MTBR thread: Platform Pedal Shootout

  12. #12
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    On photo 2 and 3 ( from the website ) it is obvious that you are using a diffusion lens. Any lamp with a diffusion lens will have compromised distance throw. MagicShine made the same mistake with the ( earlier version ) of the 872. A clear area over the emitters would of been better. If you are driving the emitters at 1.5amps you will likely have thermal issues unless the thermal paths are very direct and well established.

    Nitelights, any comment on the thermal construction of your light vs. the MS872. The MS872 is a two part construction with the LED housing attaching to the outer casing. Is yours one piece, two or other? Comments?
    Last edited by Cat-man-do; 10-24-2011 at 04:44 AM.

  13. #13
    RTM
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    why are you guys so quick to attack? seems like some bad blood around here. this light looks like a fine addition to the.low-cost group and they are certainly not the first to use theoretical output to rate their lumens. not to mention, he's a good supporter of MTBR, he bought the bigger ad! its funny to see the complete 180 vs. your treatment of some other low-cost manufacturers who continue to have their struggles. and I just can't get over the irony of anyone referring to anything as a "magicshine knockoff". that's hilarious.
    "The bitterness of poor quality remains long after the sweetness of a low price is forgotten." - Benjamin Franklin

  14. #14
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    Quote Originally Posted by RTM View Post
    . and I just can't get over the irony of anyone referring to anything as a "magicshine knockoff". that's hilarious.

    Look familiar?
    Illuminator 1000 Lumen

    And guess what....

    Nitelights product:


    Magicshine:

    DIY LED Bike Lights:
    A few Dynamo builds and some Small battery lights

  15. #15
    RTM
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    Quote Originally Posted by znomit View Post

    Look familiar?
    Illuminator 1000 Lumen

    And guess what....

    Nitelights product:


    Magicshine:

    Not sure what that all means, but my point is that Magicshine got started by copying lupine.


    Sent from my iPad using Tapatalk
    "The bitterness of poor quality remains long after the sweetness of a low price is forgotten." - Benjamin Franklin

  16. #16
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    Quote Originally Posted by RTM View Post
    why are you guys so quick to attack?
    because so many people buy lights on their advertised ratings, which range from misleading (theoretical output) to lying (those Xeccon 1600lm single XM-L lights). Nitelights also makes a big deal about their custom design, premium blah etc and charges extra, whereas their products are indistinguishable from standard Magicshine lights, so someone looking for a light would be better off buying one of those and pocketing the difference (or buying from Geoman and getting a warranty).

    Nitelights is also very quick to attack those pointing out these rather obvious facts by accusing them of "tall poppy syndrome", which, for those not from the antipodes, means cutting down to size those few who succeed and rise above others. Other than the fact that reselling Magicshines is hardly rising above others, this attitude doesn't endear him to anyone replying to his threads. BikerayUSA also made this mistake a while back, although he's wisely changed his approach to a more professional one.

  17. #17
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    Maybe I missed something, but what is the runtime on high? As an old school night rider, runtime is the first question I ask.

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