Using the deep KD reflector (link below} measured 87K lux (peak) at 1 meter. Direct drive with 2 unprotected NCR18650’s (date code 9926). Current before measuring lux was 5 amps. Emitter Domed.
EDIT: I didn’t play with focus. Reflector resting on MCPCB. I will be testing at least 3 other reflectors. Illumination Machines ST90, Defiant XML Spotlight reflector, and the WideShine Spotlight reflector. I expect the IM reflector to be quite a bit lower and the Defiant reflector to be higher based on seeing them in action. I haven’t received the WideShine yet, but expect it to be higher than the Defiant.
Host? It has 1/4” thick walls and aluminum pill (pressed in) topped with copper sheet (forget thickness). Copper emitter base reflowed to copper sheet. 3” PVC pipe is snug and holds what ever position I put it in.
I’m new to measuring lux. For reference, my TN31 measured 13460 (peak again) at 10ft when it was stock.
Small Sun ZY-T08 , 57.7mm dia. x 38.5mm depth Drive current (estimated): ~5A
Intensity: 35kcd
Note: Intensity measured after installing DRY driver instead of the one in the mod post.
This reading is likely not representative of a dedomed MT-G2. This emitter has been to hell and back several times. It has been reflowed no less then 7 times. Some of them at excessive temperatures on huge copper pills that hold the elevated temps for too long. It has also had wires soldered to it too many times to count. This emitter is one tough hombre.
Worse though, it accidentally touched a black plastic reflector (Defiant xml Spotlight reflector) while it was on once. It instantly melted the plastic and some stuck to it. It was fused to the emitter and I finally had to just let it burn off. There is permanent black residue on the phosphor. Most of the emitter’s hot spot is darkened by this residue. It is clearly visible on white walls and in measurement.
Similar up as in post 1, except Panasonic CGR18650CH’s and emitter at 10 feet because the hot spot is too small. No lens over reflector.
This reflector with the MTG2 makes the most useful, beautiful beam I have ever seen. Wider diameter that a SKR, brighter spill than a SRK, but also has very nice throw. Really lights up an area with beautifully tinted, decent cri light. I have used it with domed and dedomed MGT2. To me, the beam is best with a domed emitter.
Used same damaged Dedomed emitter discussed in Post 9 and 2 Panasonic CGR18650CH’s direct drive. Amperage was measuring 6 to 6.5 amps. Lets call it 6.3 amps. 10 feet with no lens:
2 NCR18650 laptop pulls in direct drive. Read 4.5amps before lux measurement. AR lens. All my set ups posted in this thread so far have been on Noctigon copper bases. Peak lux reading was 5,630 at 10 feet.
That’s pretty good! I’m getting 38010 lux with my shorty DST, DD, with 2xSiebele 18350 IMR, but I have a 0.5 ohm resistor. Tailcap is ~2 amps. Maybe I should remove the resistor :).
ohaya, I’m doing direct drive with a piece of wire from 2xPANA18650PD high drains, resistance mods for all springs. I get ~7A, which the MT-G2 sees comfortable with on copper.
I’m quite confident you can get rid of the resistors safely. J)
Don’t get bummed. Keep in mind that I was using a wounded emitter. I think the numbers will be better when I try it with a health domed emitter. It’s definitely not a dedicated thrower, but that IM reflector and a domed MTG2 is a thing of beauty. Better flood and far better throw than a SRK. I don’t recall if you are looking for a good thrower for biking. I can’t think of a better setup for biking. I’m working on building a flashlight host for it now. It’s going to be redneck at first, but I can tell you that it will be my go to light for most outdoor situations. It just lights up a big area in front of you with smooth, wonderful light. You don’t realize it immediately, but then you start noticing that you see all kinds of stuff you don’t see with other lights.
EDIT: I will still need my SRK’s though. More compact and longer run times. Gotta love them. Like everyone else, I’m anxiously awaiting texaspyro’s driver.
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