Bicycle thread

Discussion in 'Sports' started by Zodiac, Jul 10, 2006.

  1. pierce

    pierce Aven'Tourer

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    got my chinee "1800 Lumen Cree XM-L T6" headlamp today. the one thats a clone of the MagicShine MJ800 or whatever. holy CRAP its bright. probably 700 lumens, not 1800, but still. thats just a wild guess, but its nearly as bright as a motorcycle low beam, but somewhat more concentrated into a spot beam.

    I'll get around to setting up and taking a couple test pictures down a dark road with fixed exposures to compare it with a NR '130 lumen' and a planetbike something, and maybe even my car's lowbeams :)

    but probably not tonight.
  2. soewe812

    soewe812 Wag more Bark less

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    Luv my Magicshines. This time of year my commute is in the dark both ways. The matching rear blinkies are bright as hell also. Get the "y" wire and a rear and your good to go. Got mine from Geomangear.com, but they went out of business over a battery recall.:cry
  3. soewe812

    soewe812 Wag more Bark less

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    Got it. Thanks!
  4. pierce

    pierce Aven'Tourer

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    so I've been running it on high for an hour (battery test, its only been charged once so far)... wow, the LED on the back has changed from green (fully charged) to blue. rumor has it, it turns yellow at 30% charge, and red at 10%. I know the $80 Magicshine MJ808 does this, but previous reviews of these $33 noname lights said they didn't. also, my reflector DOES have the orange peel surface (gives more even lighting outside the central beam area), while other peoples reviews of these noname lights said they had a smooth polished reflector.
  5. Gummee!

    Gummee! That's MR. Toothless

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    ...and mine's not here yet. :cry

    Need it for tonite's ride. :baldy

    M
  6. somecallmetim

    somecallmetim Surf &/or Die

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    Ryan O'Dell, the NUE director/owner lives down the street from me...

    I'm going to do the 100k at Mohican next year, I have lots of work to do, the furthest I've mtbiked in a day is about 30 miles, my longest race this year was only 12...


  7. Ridge

    Ridge Jitenshado

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    Cool, I'll find you there. Mohican is on my to-do list of the NUE races next year.
  8. ducnut

    ducnut Long timer

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    You guys are just sick! :lol3
  9. Ridge

    Ridge Jitenshado

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    Come to the Dark side Ducnut... we have cookies!
  10. ducnut

    ducnut Long timer

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    :rofl

    I wouldn't want to hold ya' up! :thumb
  11. RxZ

    RxZ Legal Drug Dealer

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    Went riding with my new light last night. As the above comments say, this thing is bright! I only had one light, and attached it to my helmet, but I had very little trouble seeing the trail. I did get the actual MagicShine MJ-808E instead of one of the others, and it has the orange-peel reflector. Very bright spot beam, and then very even "scatter" light all around the spot.

    I rode for about 30 minutes, then used it for another 10 minutes or so loading everything back into the car. The indicator light on the back of the light was still in the "green" zone. I believe that means 100%-60% charge. Blue would be 60%-30%, then yellow down to 10%, then red until it dies. My local trail takes me about 45 minutes in full daylight, so since I am a little slower at night I still don't think I would drain the battery past one-half. Documentation says the light should last 3 hours at full charge, I would guess that is accurate based on my first use.

    Oh, I did see several deer and racoons in the woods. Their eyes really light up when the LED light hits them :eek1
  12. pierce

    pierce Aven'Tourer

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    on its first charge test, I only got about 1:45 on high. the light flashed twice, and I noted the tailcap LED had gone red, so I shut it off and recharged it. I'm doing a 2nd test now, its been on about 45 mins and is still green.
  13. TheNedster

    TheNedster Lurkapotamus

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    If it doesn't have some sort of thermal protection feature, use caution when running the light at full power while stationary. It can get hot enough to damage the internal circuitry.
  14. pierce

    pierce Aven'Tourer

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    the whole housing is aluminum with heatsink fins... it gets hot enough that its uncomfortable to hold but not burning hot, I'd estimate 120F or so, which is usually within the safe range for power semiconductors.

    I probably /should/ rig up a small fan to cool it while I'm doing these tests. its 67F or so in my living room, and I have it out in the open on top of a small wooden box, so there's plenty of convection airflow around it.

    my 2nd test gave warning flashes at 1:45, and the LED had gone red, so I shut it down and plugged it back in. I never did see a yellow phase, just green -> blue at about 55 mins, then red and blink-blink in about another 45 mins.
  15. Ridge

    Ridge Jitenshado

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    yeah, heat sink fins work much better when they have active airflow across them. :norton
  16. fullmonte

    fullmonte Reformed Kneedragger

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    Not to mention the fact that most of those miles between the real trails are just gravel fireroads with lots of elevation changes. The majority of the course comprises one of my favorite dualsport rides. Sometimes I will see riders on mtb's as I roost by and think they are :loco for riding those roads. Good luck on the training Ridge. I can't think of anything in the Triangle area (hill wise) that will properly prepare you for the Cohutta 100.
  17. ducnut

    ducnut Long timer

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    The warnings just keep getting better! :lol3
  18. pierce

    pierce Aven'Tourer

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    ok, charge/discharge test #3 on my $33 chinee XM-L T6 headlight...

    take battery off charger, plug in lamp.

    power on at 10:12pm ...
    still green at 11:00 (+48 mins)
    was blue at 11:05 (+53 mins)
    still blue at 11:52 (+1:40)
    BLINKED twice and turned RED at 11:54 (+1:42)
    still red and full brightness at 12:43 (+2:31)
    (switching off to get some sleep)


    so this thing is good for at LEAST 2.5 hours on high. my seat of the pants guestimate says low is half as bright (and still damn bright) so maybe 5+ hours on low?

    in the AM I'll switch it back on and see how much longer it runs til its noticeably fading or flashes again

    edit: k, its morning, I turned it back on at 8:40am, without recharging. I left the lamp plugged into the battery, so the red 'low battery' indicator LED was on all night....

    at 9:13am, it blinked twice, and now the red LED under the button is flashing. thats 3:04 total on time from when it was originally powered up.
  19. Ridge

    Ridge Jitenshado

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    I'm feeling the love... :lol3
  20. mud

    mud I just wander.....

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    A bunch of local guys have these and are really happy with them, and they are comparing them to halogens, HID's, and other LED's.

    They are so happy we have stopped development of our own lighting products..... NO way we could compete. If the batteries crap out early, I will probably offer a battery replacement service.:huh Other than that, China wins again.