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  1. #1
    www.4estbiker.nl
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    Upgrading lights

    Hi there,

    I'm thinking about upgrading my Magicshine MJ-816 bikelight.
    It's running a SCC P7 led en 2 Cree XP-E leds.
    I want to replace the P7 by the Cree XM-L U3.
    Both are running on the same voltage and current.
    I want to replace de XP-E's also but i'm not sure by which one.
    I want as much lumens as possible.
    The XP-E runs at max 1000mA and I was thinking to replace them bij a XM-L U3 or a XP-G S2.
    I'm also going to replace the wide beam optic by a spot beam optic.

    Can anyone give me some advice?

    Regards
    Frank
    Last edited by aandegrens; 01-29-2013 at 02:16 PM.
    My bike is never the problem and can always be faster than I can...
    http://www.4estbikers.nl

  2. #2
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    Just for clarification - you have Cree XP-E in the outer housings, and a Seoul P7 in the middle. You referred to the outer as MC-E, MP-E and XP-E in the same paragraph :-)

    Without knowing exactly how those are wired to the driver, I'd be hesitant to tell you what can be swapped with what.

    with a Seoul P7 rated upward of 900lumen, it's not much below the output of an XM-L though.

    I've found some reviews/pics online that indicate to me that the XP-E pair is getting 600ma current each, and the P7 gets 2.6A while running simultaneously. That's making me think theres separate drivers for the P7 and the XP-E's?

    Some of the eletronics gurus around here might be able to expound on the circuitry as to what it does:
    Inside the housing


    Inside the remote switch


    gurus - that 7533-1 is a current regulator, right? Is there a driver in the remote?

    Here's some measurements taken from a test:
    The manufacturer declares the power of 16W - it's quite a lot for a bike LEDs light, let's check that .

    V-In I-in P-In V-led I-led P-led Eff.

    MAX 7,85V 1,89A 14,84W 3,17V 2,57A 8,16W

    2x 3,11V 0,59A 1,85W

    total 11,87W 80%

    SSC P7 8,05V 1,31A 10,55W 3,19V 2,61A 8,34W 79%

    2x Cree 8,19V 0,49A 4,01W 3,12V 0,62A 1,92W 48%


    formatting looks a little wonky - the test is found here:
    Magicshine MJ-816 - review of the cheapest 1000+ lumen bike light.

  3. #3
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    short story though:

    without upgrading the internal electronics - you will gain very little output with going from a P7 to an XM-L @ 2.6A current. Can't tell you if an XM-L looks decent using the stock reflector.

    without upgrading the electronics to the XP-E - you might gain ~100lumen if you put a XM-L's in there at 600ma current, but Can't speak to how that reflector will work with an XM-L. Replacing with XP-Gs would gain a negligible amount.

    Honestly, you're probably looking at a lot of work for less than 300lumen difference in output, and the possibility of the beams not looking as good (could be better though - it's unknown).

  4. #4
    www.4estbiker.nl
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    Thanks for your reply. Of course I mean XP-E in my story.
    I'm planning to replace the optics as well.
    I will test it with the XM-L with the standard optic.
    Secondly I will replace the optics on the XP-E so I will get a spot beam.
    I don't like the wide beam on it.
    I going to order some stuff and will get on trying.

    Thank you very much again for your time.
    My bike is never the problem and can always be faster than I can...
    http://www.4estbikers.nl

  5. #5
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    Lots of detail on this light in this thread

    MagicShine 1400 Deconstructed

    and specifics on the driver in this particular post in that thread

    MagicShine 1400 Deconstructed

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