Trustfire TR-J12 measurements (5 x XM-L)

Wow Thanks mitro,

Do you know TR-J12 max voltage driver is?

Just looking at that spike at the end, I'm going to say that 16v is probably not a good idea.

That basically explains why 2 cells is brighter than 3 cells on the meter. With nearly 4A of current from each 18650 (in 2-cell), it would easily be 3.3-3.6V loaded ea depending on cell quality, that's 6 plus to 7V loaded.

Wow, the climb is very steep from 3 plus volts to say 4.5V. so it really depends on cell quality. Maybe with 26650 IMR the sag is not that great compared to the 18650s, so it's the same story, 2.8A might net you more light than 3.3A. :) Anyway that's purely academic, as always i depend on my lux meter to report results mainly nowadays. :)

Has anyone bought a UCL lens for the J12 yet?

No size for UCL, unfortunately.

I have sent them an email asking if they might be able to cut it down to size. hopefully, they can

I got a reply and they have 60mm UCL acrylic lens for sale. Now the J12 uses 59mm lens though.

Photos of the driver

can you measure the diameter of the driver please?

and height?

thanks for posting - I've been waiting for someone to do that.

This might fit - and if the specs are accurate, and the switch can handle the current, it would make the trj12 the brightest light under $100?

http://kaidomain.com/product/details.S020167

wish it had more levels

just manage to take out again for rough measurement. bottom pcb is about 28mm, I only measure the head's bottom thread, the second PCB height is about 25mm. take note the above is not exact as I didn't take out the entire pcb assembly.

I just popped mine apart before finding this thread. Is anyone else bothered by how small of a gauge the wires are that come from the driver and feed the LED array?

I saw someone gained access to the LED array on another website (forgot which and don't have link), which revealed some very ugly soldering work but they didn't post how the were able to. Does anyone else know?

edit: The threads on mine are fairly cruddy - you must be careful not to cross-thread when you are putting the tailcap on.

thanks! my KD 9xml driver measures 28.45mm high. The second pcb, which is horizontal, is 24.9 and the main 26mm. The coil is slightly wider than the second pcb, so even though there's room on the side opposite from the coil, the driver (except bottom board) cannot be placed in a cylinder with an inner diameter that matches the outer diameter of the second pcb.

so...if the bottom pcb of the KD driver isn't wide enough (which I doubt) that's an easy fix.

the kd driver might be too tall - but I doubt it, since I think your measurement is from the top of the horizontal pcb to the top of the vertical one.

the kd bottom pcb is 1.6mm thick.

Aloha and welcome to BLF bitcore!

Thanks, I sort-of dove straight into flashaholism with the TR-J12, three 4sevens 26650's, an imax B6AC hobby charger, a lipo sack, and some hacked apart radio shack D cell battery holders that are waiting on me to glue to a board of some sort so I can make a balance charger cradle for the 26650's.

I may have a bit of an issue with the 4-sevens batteries though, their nipples are not quite large enough for them to stack effectively. The green plastic jacketing is thick around the top and bottom, restricting the cell to cell contact. The last thing I want is to create a hotspot on a battery due to a high current + weak connection that develops into something more dangerous. I've seen pictures of what happens when these lithium ion batteries pop, and that's the LAST thing I want to happen.

Glad to have you here, bitcore!

gottagreetallthenewbiesRC

Using IMRs, i noticed that the J12 dims when voltage gets low instead of flickering/going down a mode when I use protected 18650s.

Anyone else notice that?

It's ment to dim, not sure about the flickering could be the pcbs on the batteries.

Hey 2100 can you buy these and test them against the TR-J12 please.

5 x T6

MarsFire 080 Cree T6 4000-Lumen 5-Mode 5-LED Flashlight - Black (3*26650)

6 x T6

MarsFire 088 Cree T6 4500-Lumen 5-Mode 6-LED Flashlight - Black (3*26650)

7 x T6

MarsFire B Cree T6 5000-Lumen 5-Mode 7-LED Flashlight - Black (3*26650/2*26650)

Another contender 5 x T6 $69.99 shipped

TrustFire TR-J16 Cree XM-L T6 5-LED 4500-Lumen 5-Mode Memory Flashlight - Titanium Finish (2/3*18650)