I removed the NTC and did stack the sense resistor to crank up the current to about 7,3 A
It gets nice and warm after about 5 minutes, but i havent used it for very long extended/continuous times, so cant say something about that.
What resistor value for 7.3amps?
R50 on top of the original R10
I would avoid buying from Kaidomain for the moment until I get a successful reflow myself for testing. The 2mm has a slight purple tint even at 4.5A. djozz is thinking it may have been a bad reflow. It could be an entire batch as all 6pcs have the same issue.
My 30pcs 1mm do the same thing at 4.3A so I’m selling at 3.5A (650 lumens) with stacked 7135 chips
Next purchase will be from led4power
I always remove the ntc since I had it step down at 35 degrees instead of 55.
You’d get roughly 8 minutes on Turbo before 7.3A hits 55 degrees at that point it drops to quite a low output.
Convoy’s drivers aren’t configured the best for this led.
I might use led4power’s drivers but they are expensive
So do you think whoever is doing white flat reflows at Kaidomain is doing a botchy work? @#$%, I have a couple lying around.
Will mount them on an old PC heatsink, set a small narrow beam TIR lens on top of the emitters, and proceed with some testing with my power supply and smartphone as ceilingbounce luxmeter. 
I’ll see if I can capture it in a couple photos
I’m not 100% since this is the first time using white flats. I did attempt a reflow, a terrible one, and it was instant purple. It was the same tint but much worse, which feels like that confirmed it for me. It would have been a different story if it was blue but it was exactly the same tint
Ordered some lead solder paste to try again once it arrives.
Can someone tell me where to get centering rings for the Convoy C8+ using the 4040 1mm white flat?
Seems like this is much better than the 3030 version
To my knowledge, nobody is making them for 4040. You can ream a 3535 out to fit, which is what I’ve done in my lights
Did you get the 5400K version of the 2mm WF from kaidomain? This LED has a noticeable purple tint to it compared to the typical pure white WF.
Would you mind linking me to a 3535 so I know what to look for. Thanks
Yes, I did. Is this normal?
Maybe I should get djozz to test one to confirm it’s not an issue.
I believe it is normal. It is quite purple-ish, but the output is close to other pure white WFs I got from mouser. IMO the tint worked pretty good outdoors.
I appreciate your input, thank you
At 6.5A I was getting 1200 lumens and 7.3A 1170. Looks like around 7A is the limit for KD 2mm
That is very similar to the smaller LEP light with 250K.
If I pay someone to mod a Jaxman Z1 - will I get similar results ?
It would be cool to have a Turbo[4 min runtime ] and a near turbo ( 15 minute run time] Medium high and Low and moon mode
2] Bonus question- what about the twist zoom glass aspherics they use for cheap infrared lights T20 T38 etc?
That is very similar to the smaller LEP light with 250K.
But fewer legal issues to use an LED , especially if less than 10 miles from an airport .
Not legal to even use any type of laser outside even with no planes in sight.
If I pay someone to mod a Jaxman Z1 - will I get similar results ?
It would be cool to have a Turbo[4 min runtime ] and a near turbo ( 15 minute run time] Medium high and Low and moon mode
2] Bonus question- what about the twist zoom glass aspherics they use for cheap infrared lights T20 T38 etc?
Are those likely yield good results or too much work to mod for a Pro ?
An LEP is not a laser and can safely be used by planes.
AFAIK all current handheld LEPs are rated as class 3R or 3B lasers depending on the specific model. Whether that refers only to the laser diode inside, or the whole device is NOT a question many would want to have to sort out in their own criminal trial.
Vehicle mounted LEP arrays wouldn’t have or need anywhere near the same level of collimation either which is certainly a consideration in eye hazard for lights/lasers. This is the only thing I could find in regards to LEPs and aviation use: https://www.faa.gov/pilots/safety/pilotsafetybrochures/media/LaserEyeProtection.pdf
LEP stands for Laser Eye Protection in this case, pretty much the opposite of using the LEPs we usually mean as aviation lights.
LEPs are laser excited phosphors.
Instead of a blue LED there is a blue laser diode.
The light produced by the phosphor is regular white light like any LED, it is not laser light.
Also collimated flasshlights don’t case eye damge like a laser can.
Even though it is near collimated, the cross sectional area is hundreds of times larger than a laser and won’t cause eye damage.