Did two fun mods today!
Convoy C8 with sbt90.2
WildTrail WT1M with "W2.2" CULPM1
Enjoying them both, but need to dial in the C8 beam better. Probably remove the centering ring.
I repaired the driver today. Beamshots of the two:
V10R Ti+ sw45k on the left, RRT01 sw30 on the right. As you can see, the beams are pretty good. The RRT-01 has a wider beam, and overall it’s slightly better. The VR10 has a bit of a bright ring at the very edge of the spill, but that’s really the only “flaw” in the beam as far as I can tell - and I don’t mind it in real use.
The V10R Ti+ is as low as it’ll go (which is plenty low), but the RRT01 is already dimmer and has more room to go. I can get it dim enough that I can only tell it’s on if I’m not looking directly at it.
Is the off-center 90.2 noticeable in the beam?
lol, thanks for pointing that out.
YES, yes it is. The beam is.. well.. bleh. not good, right now! ive put all of 45 minutes into the light so far though, non of which has been working on the reflector location. I need to drop it. and center the reflector of course. i just wanted to get it together to try it out tonight. lol.
But yes, the off center led makes the beam not have a hotpsot essentially. at 20m you see the hotspot, but its not defined.
Before removing you could try sanding the bottom of the centering ring and see if that helps
You probably already know to be very careful of reflector shorts with the centering ring out
thank you, I will try that. I think I already did it on this one but I don't remember because I might have a couple lights yesterday and on some of them I sanded the centering ring really thin. So I may have done it on this already but I will try if I did not.
and absolutely about the short possibility. I surrounded this sbt90.2 with kapton tape, which I always do when I Delens them, just to be extra cautious . So this one is insulated pretty well. This is the first time I noticed a green tint coming from the delensed sbt90.2, though. At least on lower levels.
I got it from Simon at convoy I wonder if it's just the particular batch..
Today I changed XHP50.3 4000K 90cri from Digikey to my Convoy S16. It has 6V 5A driver and OP reflector. Original emitter was XHP50.2 4000K 70cri from Convoy flashlight store. Here are some white wall comparisons with color balance of 4600K and about 2,5 metres distance.
First with 10% mode:
Then with 100% mode:
New one is throwier, dimmer and ugly greenish yellow.
I would think the dimmer is expected - you always get less lumens for higher CRI? I can't see the ugly greenish compared to the 50.2 in these shots, maybe just me. The hotspot is definitely smaller though - would expect better throw.
I would also expect dimmer and greener tint for HI CRI (im thinking sst20 here, greener at 4000k Hi Cri compared to xpl-hi 4000k) i would actually prefer the 50.3 NOT be in Hi CRI, i have never understood the need for a Hi CRI throwing LED? If one can barely see the target at 300m, why does the color rendition mater?
On to- why are so many ppl interested in SFT40 in 4000k & Hi CRI? i would be happy with 5700k. Actually, i would be happy to just be able to buy some of them! my god... this is getting painful! C'mon Luminus! :))
Anyway, i guess good tint doesn't matter at 300m either. lol.
Either way, im excited! that 50.3 should be awesome. Just wish there was a 3volt version, i dont care what color or cri. just 3v.
Yes, it was not a surprise it is dimmer. It is easily the greenest led I have ever seen. Picture won’t show the difference. Even my wife asked why have I built green light. 
Warmer tints for throwers is reported to have advantages in less reflection with moisture in the air, could result in better range in real outdoors. Plus throwers aren't used solely for long distance, least in many use cases. If you got a light in your hand, you are gonna use it for anything that's needed at the moment.
Interesting about the green...
This isn’t the domeless version. So this is not the smallest led. Probably not a good choice for a thrower.
I bought few different new XHP’s when I ordered components from Digikey.
80cri version of 4000K is not so green, but not neutral either.
I also have XHP50.3 in 5000K 80cri and 90 cri versions. Interestingly I couldn’t find the 90cri version in the datasheet. Binning label that came with the led tells this is one flux bin higher than highest flux bin in the datasheet.
I haven’t tried 5000K versions yet.
I also ordered 70.3 in 6000K. Haven’t tried that either.
Nice! Just Digikey here (US) and found 58 listings in stock for the XHP50.3 but all were listed at 11.2V, 11.2V also done at 6V.
So this one is green but does it at least have better color uniformity than .2s ?
Some tint shift on lower power levels, not so bad with more power but still there. Blue area in the middle of the beam from the cross section of four diodes. With this Convoy M1 reflector I liked XHP50.2 more.
EDIT: I almsot didn't post this, because the camera makes the emitter look green and it is really aggravating. it is actually rosy and looks really nice. and no, i am not color blind lol. Anyway,
Another s2r2 baton. the pics make the xpl-hi 4000k 5d look green, but this came out of one of my newly acquired D1's and it is the rosiest and nicest xpl-hi 5d i have ever come across. In Real Life it is beautiful, in these photos, the emitter looks green. Go figure, take my words for it, its really nice.
both xpl-hi 4000k, but the s2r2 green has the nicer tint. The Copper warrior has a nice tint too, just not as nice.
The whole set, this s2r2 was the last one i needed to swap the horrible stock emitter out of.
Again, the green baton actually has a REALLY nice tint, rosy and clean. But this pic makes it look green. its NOT, i cant figure out why the camera does this. only seems to happen to the xpl-hi 4000k which is weird.
Also, i know the last two (copper and green) look like they would be different emitters, but they are not. i verified before i did the mods. The camera is making them look much different than they actually are (they look more similar to each other IRL), but also there is such a variation of tints in the xpl-hi 4000k line i have noticed, from having dozens of this one emitter.
Ghetto reflow with tealight candle of 3 Samsung LH351D 2700K 90CRI on different MCPCB :
It really works great (I was extremely surprised how easy it went!), the hardest part is to get rid of the carbon deposition on the back of the MCPCB after the soldering is complete
Sofirn HS05 :
HD20 and SP40 got their swap too. … and I also reflowed an Osram flat green in plae of the Osram flat white of a Convoy C8+
from left to right :
Wurkkos HD20 (stock flood : LH351D 500k, modded spot : LH351D 2700K 90CRI)
Manker E03HII (stock)
Convoy S2+ (modded, Osram flat white)
Sofirn SP40 (modded, Samsung LH351D 4000K 90CRI)
Sofirn SP40 (modded, Samsung LH351D 2700K 90CRI + diffuser film)
Sofirn HS05 (modded, Samsung LH351D 2700K 90CRI + diffuser film)
bottom :
Convoy C8+ (modded, Osram flat green)
M1 is way too small for this emitter. Like with all tiny reflectors (compared to the size of the emitter) it will show all negative in LED.
Try it in C8+ or some bigger model and you will see it in true colors.
Simon himself offers M21B with Xhp50.2. M1 has same reflector and it is fine with XHP50.2. The beam itself isn’t that bad with XHP50.3. It is just ugly green.
I have four different XHP50.3’s and I have tried two of them. 4000K, 90cri and 80cri and both very green. Their tint isn’t, in my opinion, improvement over Xhp50.2. I have tried C chromaticity binned 4000K 80cri Xhp50.2 from Kaidomain and it is much more pleasurable tint.
It is usually quite easy to get rid of blue center or at least get it less noticeable. Just need to do some adjusting to reflector height. Different gaskets etc.
M21B/M1 reflector also works fine with XHP70.2. Just don’t expect much throw.
Yes, I like to experiment on my spare time. 