Hi,
Ok, this is where I ended up…
I was struggling to figure out why the low tailcap, even when I switched to DD. In the end, I even tested just the pill itself, and measured even less current, and that was even after switching to 22 AWG wiring from the (now) contact board to the emitter, but still got really low current.
I have to say that, earlier, I mentioned that I had to put a new XR-E emitter in. But the one I put in was one out of my junk box, and I have no idea where it came from (I think that it was from a Tiablo, but not sure), so my conclusion was that the emitter was only sinking the ~1.5 amps.
I don’t have any other XR-E emitters, and I didn’t want to leave the light like that, so…
I had a bunch of different XM-L emitters sitting around, I just randomly picked one that was on a 16mm star (most were on 20mm stars). It was this XM-L U3:
https://www.fasttech.com/p/1189701
I tested the pill outside the light, with my meter measuring current (no tube, etc.) and was seeing about 3.45 amps.
Ok, that’s good.
Put it back into the light, still measuring ~3.45 amps tailcap.
So then I measured lux, and got 46771 (46.7 Klux).
Not as good as a “good” stock A60, but much better than earlier. Plus now, it’s not a pencil-like hotspot, but has a not-so-sharp hotspot with nice spill, and, even close to a wall, there’s no dark spot.
That’s about it for now.
Later,
Jim