Tried both. The trick with desoldering is to desolder contacts one-by-one: slightly lift the switch while pressing the iron against the first contact. The metal there is bendy enough to do this without damaging the switch. Then, the second contact can be desoldered separately.
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Wow, that looks amazing! Props to Simon for providing us with such amazing colors!
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This looks like an interesting light, I might get this with the B35AM emitter in 6500k for a double weird little light
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So. Simon just posted how the new driver works. Answering my question.
So as I understood, turbo is only momentary. There’s no way to leave it on. Not so sure how I feel about this. At least we can know for sure that the full buck driver is being used.
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Ahh very nice! I didn’t expect the metal to have enough give to make lifting possible.
That actually sounds quite nice. I’d be curious to see how moonlight performs with this, and have no need for FET, since I fear burning out the emitters. This might get me to pick up a new light.
You almost scared me by cutting the image a bit, but apparently there’s still also a stepped mode with 0.6A - 1.5A - 7.5A - 25A. So we have 4 stepped modes plus a separate moonlight and separate turbo. Not sure if it’s still possible to jump from moonlight to low, but other than that I have to say it’s looking pretty good indeed.
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Shame it now appeared at the store after my order just got shipped. Would be a good contender to test against the N7-170HP from Nightwatch that is also coming for my M21C.
Really didn’t like the SFT-90 in it cause how high the forward voltage is
Just noticed the LHP73B can be configured into 6V emitter, would it be better with Simon 6V 8A boost driver?
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@Simon_Mao , do you happen to have plans on stocking the “12V” mcpcb to pair LHP7-3B with 6V drivers?
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Pulled out an L21B SFT40 today to find it paired with an 11mm reflector instead of 9mm. This stock was from the end of last year, so it must have been when Simon ran out of the 9mm reflectors. It uses a 0.6mm thick gasket made specially for 5050 emitters. Well, I used the same gasket with an SFT25R and the focus is very good, this will allow us to still use this emitter in this model.
I still don’t understand how every other reflector can focus multiple emitters, then we get this new 9mm L21B reflector that can’t. Why accept such a reflector when multiple emitter options are available? sounds like more hassle than it’s worth. Complaints have already started on reddit about it.
Edit: Just measured it and it throws further than the previous 9mm reflector!
SFT25R 6500K
1,424m at 0 sec
1.394m at 30 sec
Edit 2: After a comment on reddit, it was mentioned that the 11mm reflector has also been updated. I had been using the 11mm reflector that arrived the end of last year with the SFT40. Just measured the 11mm reflector I just received with the XHP70.3 and it has indeed been updated, thankfully it’s still okay, but slightly less range at 1,400m at 0 sec / 1,370m at 30 sec. I just used the 0.6mm gasket so perhaps that could be altered for a little extra.
Edit 3: My mistake, I got confused in which reflector was which. The latest 11mm reflector is the one that achieves 1,424m at 0 sec, it’s the previous 11mm reflector at 1,400m. Awesome.
Begs the question yet again, why is this reflector okay when the 9mm isn’t? very weird. Simon should have just ditched the 9mm and used this 11mm for everything.
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Simon says the SFT40 is the current best sellers for the L21B, but I think that’ll change to the SFT25R if Simon can get the reflector sorted. The SFT25R has gained in popularity a lot. I prefer it over the SFT40 now.
Interestingly the SFT25R in 5000K measures only 30m less than the 6500K. The SFT40 5000K measures over 100m less, I wonder why that is.
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lhp73b is a 3V LED
Sorry, I don’t have such plans at the moment.
Mc PCB does not fit.
Can be both. A PCB that makes a 70.2/70.3 12V would make a LHP73B 6V.
I would be interested in LHP73B in 6V config as well. Sounds like a very efficient floody LED for max sustained brightness in a boost host.
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Here’s an example of mcpcb for 6V connection scheme shown by ebastler.
But I wonder what are the constraints for usage of such pcb… Isn’t thermal pad (and first cathode - second anode) connected to the main copper mass of the board and therefore to the body of flashlight given that shelf/pill isn’t anodized?
When the connectors are arranged like that the center pad is electrically active. Not good for a DTP board.
This type does not have that problem, the center pad is isolated, although these sinkpad MCPCBs are not suitable for high current:
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@Simon_Mao are there any plans to remake or fix the off-center 3535 square gaskets?
MTN has one that looks a little better. The main issue of those is them trying to make them 6V and 12V (XHP70) or 3V and 6V (LHP73B) capable. With a 12V (XHP) or 6V (LHP) only config the traces could be a whole lot thicker.
Simon could order a batch of them. Would be great to have an option designed for high current. Still worse than a purely 3/6 V one ofc, but at least better than those multi voltage boards.
