Nightwatch NI40- De-domed sst40cw/nw and xhp50.2 - new budget throwers @ nealsgadgets

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DB Custom
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The driver is different depending on which emitter you choose. There are 8 7135 chips on the spring side of the 50.2 (yes, a 3V XHP-50.2) but there is nothing on the spring side of the SST-40 driver and it is green, completely different driver. The UI is High to Low on the 50.2 I got, and Low to High on the SST-40.

I tested with a rested Basen at 4.12V and saw 3.26A to the SST-40, while the same cell showed 9A (after climbing for a bit) to the 50.2.

I don’t have lumens numbers or lux numbers at this time, was working outside all day in the heat and am beat, but I did get the old Arctic Cat running! Big Smile

SKV89
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I just took a tint measurement on my SST-40 version of the NI40 and got these results:
CCT: 4780K
DUV: 0.0250
Ra (CRI): 66.6.

With a DUV of 0.0250, this is by far the greenest tint I’ve ever seen in a flashlight. It’s unfortunate because I really like everything else about the light. It is very solid and well built (typical Nightwatch) and the functional cooling fins are done perfectly. The dedomed SST-40 throws really well but the tint is unfortunate. This does make for a really good host for modding. Maybe if you put a 1mm or 2mm White Flat in there, the thermal performance of this host might be able to handle max output until the batteries run out.

DB Custom
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Chemical de-domes tend to push an emitter into the green, and they definitely chemically de-domed the SST-40, with what is the mystery as I have known several people trying all sorts of combinations to get the 40 to come clean! They’ve done it here, and it has a nice tight beam… outdoors where green is prevalent it really isn’t noticeable and of course if throw is really what one is looking for the slight off-tint half a mile away is usually much less a factor than the subject illuminated… Wink

contactcr
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Sharp fins are my pet peeve. I have baby soft hands.

Surprised even with the dedome the tint made it down to 4780K. They must have de-domed one of the neutral bins. The cool whites I have sliced previously were still very high CCT before and after slicing.

Agro
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That NI40 SST-40 looks like a seriously good value deal. Though the price went up already.

DB Custom
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Contactcr, the SST-40 is chemically de-domed, not sliced. The “de-domed” offering of the 3V XHP-50.2 is sliced and diced and not all that well. Just saying.

wstrachan
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SST 20 cool white deal I’m interested in!

light addict....yeah I've got the bug.

Atrolux MF02_O2S
Imalent DT70
Emissar (All Models)
Lumintop ODL20C
Wuben A21 & T70
thrunite tn32 ut
acebeam k60
many, many others...

maukka
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Got a sample from Neal as well. This is an odd one since packaging says S2WP and that’s what Neal also told me it has. But that one only matches to an Osram RGBW LED from what I could find.

edit: looks like S2WN after all: https://www.osram.com/ecat/OSRAM%20OSTAR%C2%AE%20Stage%20LE%20UW%20S2WN/...

edit2: then again, on this page, the S2WP pictured does match the LED in this light exactly

And here’s the datasheet: https://dammedia.osram.info/media/resource/hires/osram-dam-7378054/LE%20...

Spacing of the four modes is bad: low too high and the three highest modes are too close to each other.

No visible PWM.

Very nice cool white tint and negligible tint shift across the beam. Build is super solid.

BlueSwordM
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Seems like someone from NightWatch is a BLF member.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

maukka
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Ok, finally found the S2WP Ultra White datasheet:
https://dammedia.osram.info/media/resource/hires/osram-dam-7378054/LE%20...

Agro
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I see 26 klux on the pic…at what distance is that?

maukka
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Don’t mind the lux. It was just a quick test at an arbitrary distance on the second highest mode.

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