I reflowed it myself, and re-did it for the second set of measurements, I believe I did it well, there was enough solder and not a huge excess, and earlier tests did not find a measurable effect of thicker/thinner layers of solder between led and PCB.
Measuring MCPCB temperature would be a very nice addition to my test set-up, but it would add to the work-load of doing emitter tests. In practice that will lead to less emitter tests because I’m limited in hobby time and also the extra work will raise my treshold for doing tests, which is already higher than when I started doing them
Djozz, you are measuring the current at the led? Right?
The others at the tailcap before a driver?
Maybe that can explain something.
With these high currents weird things can happen.
The best dog walking light will vary by person but there are a lot of options. At the top of my list would be an L6 / S70s if you want something you can knock someone over the head with if needed. The Q8 is also a great option for this.
In smaller packages an X6 or X7 triple makes for a great overall light with some good output.
Just updated my MT07 with a XHP70.2 (same P2 3B), but from KD. I did make resistor mods, but had somewhat disappointing results with updated to a XHP70 P2 1C - now I'm not even sure it is what I thought it was....
Significant gains. The boost in throw is very encouraging. The MT07 has an OP, but it's a big head for sure at 86 mm, and 72.5 mm I.D. Sorry, didn't measure amps.
So far everyone that’s shaved the dome on one of these ‘new phosphor’ emitters has gotten reduced intensity and lumen output.
I think ONE person managed to dedome one? Can’t remember for sure.