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Thread: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

  1. #31

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Buyin one for sure now! :-)

  2. #32
    Flashaholic* BLUE LED's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    I have a TN31 coming. I hope it arrives before Sat 16th June. I am hoping to bring this to the CPF meet.

  3. #33
    Enlightened Mar's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Hopefully I get mine this week, need it to locate distance objects for a contest though I do have other throwers.

  4. #34

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Hi RickyP,

    Didn't want to just tell you but rather show you... =o) Hope that helps.


    Cheers,
    Tim

  5. #35

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)


  6. #36

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Wow Tim - thanks for the extremely thorough answer to my question!! Much appreciated!

    I ended up getting one so now get to see for myself. Just before I saw your response I was comparing the lowest lows of my varapower (cu heatsink, regular head, dedomed), jetbeam rrt0 variable, Thrunite scorpion, TN31, rex photon keychain light (4 led pinch light w/rechargeable batteries) and Eagletac D25 and G25C2.

    From low to high here are my "subjective visual" thoughts:

    1. Varapower - of 32 settings the lowest 3 are lower than the jetbeam RRT0 varable. Don't have a trit to compare to but can't imagine it's much brighter than that.
    2. Rex photon light - adjusted down to the lowest setting. Almost no hotspot - great "read in bed w/out disturbing your wife" light!
    3. Jetbeam RRT0 - Not much brighter than the Rex; definately a distinction between the hotspot and spill but nothing like the TN31.
    4. Thrunite Scorpion V2 w/turbohead. Still very low but WAIT... hold the press... I can explain the TN31 better now**
    5. Thrunite TN31 - high lux for low lumens. Not the best read in bed light AS IS, but would be excellent with a diffuser.
    6 & 7. Both Eagletacs lowest low are in a completely different category; much brighter.

    ** Random thought - though the varapower on lowest setting is much lower than the lowest setting on the Rex or the Jetbeam, I still can clearly see the hotspot on the ceiling 5' above me in the pitch dark (I can also easily look directly into the LED with no discomfort.) The scorpion's hotspot on firefly though is much more disting than the varapower. HOWEVER, when I take the head off the scorpion so that there is no reflecor I can see absolutely nothing, nada on the ceiling.
    The lumens can't have gone down - what changed was the lux.

    The TN31 @ 1/2 a lumen almost appears as bright as the Eagletac at 5 lumens. I'd love a diffuser for it as then you could have the best of both worlds. Without the diffuser, you have the intensity of a normal 5 lumen light with the runtime of .5 lumens (think enough light to hike on jungle trails in the night for 9 months!). With the diffuser I'm sure it would be a nice, soft beam!

  7. #37

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    You're welcome! As you've noticed with your expirements, the measured output at low levels doesn't really jive with the true output at the emitter. At these low levels, how far that emitter is away from the sensor makes a huge difference (even with a real IS). In this case, given the very deep reflector, the TN31's low ouput measures lower than what it's truly outputting.

    All,
    Designs & Features and Size & Handling sections now fleshed out.

    Cheers,
    Tim
    Last edited by turboBB; 05-21-2012 at 10:24 PM.

  8. #38

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    I was actually able to remove the SS bezel so I've added a bunch of new stuff about it (search 5/22). Also, here's a quick vid/tip for reinstalling it without binding the o-ring:


    Cheers,
    Tim

  9. #39

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Cool! I'm seeing if Michael at OMG lumens can make a diffuser film for it and was hoping to be able to easily remove the bezel and have the film larger than the inner diameter/smaller than the OD of it.

  10. #40

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Went camping in RI last week and got to do long distance beamshots as well as camping use mini video review (search 6/4).

    Cheers,
    Tim

  11. #41

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    If this is a stupid question I apologize in advance.
    Whats the standby mode for??????????????????
    "Life is tough, but its tougher when you're stupid"--John Wayne
    "Luceat lux vestra" = Let your light shine, [in Latin]

  12. #42

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Instant one-handed access to strobe or output levels without the need to first depress a switch. While the control ring is reasonably firm, the switch greatly reduces the likelihood of accidental activation without needing to lock out the light.

  13. #43
    harro's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Hi turboBB. Watched your vid on replacing the bezel, very helpful tks. Does the lens just sit on the 'o'ring between it and the reflector? With the 'o'ring behind the bezel, is it located in a recess or groove, and is it stuck in place, or can it be removed without too many problems??
    Many thanks;
    Mike.

  14. #44

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Working from the reflector onwards towards the bezel:

    Reflector -> Rubber Gasket/Flange -> Lens -> O-Ring -> Bezel

    The O-Ring itself should be installed around a "lip" on the underside of the bezel and you should be able to see the SS bezel itself within the inner diameter of the O-Ring as shown around the 3 o'clock position of the bezel in this pic:


    Hope that answers your question but do let me know if you have more.

    Cheers,
    Tim

  15. #45
    harro's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Quote Originally Posted by turboBB View Post
    Working from the reflector onwards towards the bezel:

    Reflector -> Rubber Gasket/Flange -> Lens -> O-Ring -> Bezel

    The O-Ring itself should be installed around a "lip" on the underside of the bezel and you should be able to see the SS bezel itself within the inner diameter of the O-Ring as shown around the 3 o'clock position of the bezel in this pic:


    Hope that answers your question but do let me know if you have more.

    Cheers,
    Tim
    Thankyou Tim;
    What you've shown me is exactly what i was wanting to know!!
    Best Regards and keep up with the informative reviews;
    Many Tks;
    Mike.

  16. #46
    harro's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Hello turboBB ( Tim );
    Whilst watching your vid on reinstalling the bezel, i heard you say how difficult it was to do without the proper tool. I'm certain you would know this one, but if not, give it a go. This saves ripping skin off your hands from sharpish edges and gives you more leverage. Take an old bicycle innertube and cut out a section about 1 foot long. Slit this piece lengthways so you have a flat piece of thin rubber. You can then wrap this around bezel's, heads, tailcaps etc. Makes undoing and reinstalling heaps easier.

  17. #47

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Any pointers on how to clean this massive lens? I tried warm water and a little dish soap while drying with a microfiber cloth, but i still have bits of steaks that drive me nuts. I don't want to end up scratching the lens.

  18. #48

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Quote Originally Posted by veedo View Post
    Any pointers on how to clean this massive lens? I tried warm water and a little dish soap while drying with a microfiber cloth, but i still have bits of steaks that drive me nuts. I don't want to end up scratching the lens.
    I have had the best luck cleaning it when its cool. I am just using a microfiber cloth that came with my 3D glasses. I have noticed really bad streaking trying to clean it when ever it is even the slightest bit warm.

  19. #49

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    @harro - thx for the tip! I'm now using the rubber grips used to open jar tops.

    @veedo - like biglights, I also use a microfiber towel and just the condensation from my breath. Here's a thread with lots of good tips that might help:
    http://www.candlepowerforums.com/vb/...ar-coated-lens

    Good luck!

  20. #50

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Thanks for a great review,video ive seen a while ago,but only just read the review[almost it all].

    Thanks for the time and trouble


    DON...

  21. #51
    Flashaholic* tobrien's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    how's the NW version of this that Battery Junction sells? how much decreased lumen count does one get? any decrease in lux?

    turbobb your review was amazing btw!
    aka Edgar Allan Bro, Brosama Bin Liftin, Walter Crunkite, Bro Namath, Teddy Brosevelt, and the Tomahawk Crunkmissile.
    my lights - review of PrecisionWorks - that's Gucci Mane in my avatar

  22. #52
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Quote Originally Posted by tobrien View Post
    how's the NW version of this that Battery Junction sells? how much decreased lumen count does one get? any decrease in lux?
    The numbers and figures that I received from Thrunite back then were 1050 max lumens, XM-L T6, 5,500K bin.

  23. #53

    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Just got my TN30 and TN31 today.
    However there was a problem getting the TN30 to work.
    It would not light at all, only on low in all modes and maybe 1 in 10 times i reseated the battery holder, it would work as it should.

    After changing batteries and battery holders between the TN30 and the TN31, i found that the problem was with the battery holder.

    The voltages were ok, and only after half an hour, I found the problem.

    One of the metal discs on the end of the battery holder, weren't centered, so when it is put into the flashlight, it would short circuit against the wall.
    Solution was easy. Just unscrew the 3 screws and recenter the disc.
    I will propably insulate the sides of the disc, using tape or paint.

    Some pictures:

    Before centering:







    After Centering:





  24. #54
    Flashaholic
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Nice tip GReaper.
    Although I don't have a problem with mine, you made me take a second look, thanks

  25. #55
    sbbsga's Avatar
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    Default Re: ThruNite TN31 Review (XM-L U2 | 3 x 18650)

    Thank you GReaper and

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