Noctigon K1 info / review

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DB Custom
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Rayoui, fully aware of what it indicates… can you see that tiny performance gain at a mile if you get it perfect? Which was exactly my point… relevance. Sure, the OCD in us makes every tiny bit seem life and death, but it’s really going to be difficult to find the difference after spending the time to make it perfect, even on the meters, the eye will only ever see it on the wall in a white wall hunting expedition. There are a very high percentage of times when it pays to leave well enough alone, after some 1000 builds I am figuring this out… Wink

EasyB
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Rayoui wrote:
DB Custom wrote:
I find it totally unnecessary to stress over the beam profile at close range when it’s a long range light. Perfect or slightly off at 8’ will be completely irrelevant at 5280’.

It’s an indication that the reflector isn’t focused properly. Could be leaving performance on the table.


It’s likely that very small non-centeredness makes no difference to the beam center intensity. Even with a small LED like the WF there is some room for error.

You can check whether the focus is good enough. If you make a pinhole in a piece of thin cardboard or Al foil and move it around the reflector face you can isolate the parts of the beam from different parts of the reflector. Essentially if the isolated beams from different parts of the reflector overlap at the beam center than you are utilizing the whole reflector area and the beam intensity is maximized. My description is probably not clear to someone not already familiar with these ideas, but see here for a more complete procedure.
http://budgetlightforum.com/node/55428

On second thought, this test is sensitive to the vertical focus of the LED, but I’m not sure if it works as well for lateral focus.

Rayoui
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I’m well aware the difference would be small and likely unnoticeable. The same could be said about a lot of things people worry about here, like different batteries giving you a 10% delta in lumens. I personally wouldn’t worry about something as minor as a tiny misalignment like the one shown. But, on the other hand, isn’t fiddling with lights to squeeze out maximum performance what we do around here?

P.S… Any word on the XHP version?

Relampago
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I’d like an XHP as well. I ordered the creamy green also, I figure it’ll be a great camping tool for signalling.

“Electricity is really just organized lightning”
― George Carlin

lawallac
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jp9mm
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I’m looking to buy a K1 as my first thrower. Got the D4V2 last week and im very impressed.

I’m wondering if anyone has thought about offering a D4 head swap on the K1 body since it has the 21700 battery/charger.
Is that feasible? or if not is a 21700 d4v2 in the works?

BurningPlayd0h
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jp9mm wrote:
I’m looking to buy a K1 as my first thrower. Got the D4V2 last week and im very impressed.

I’m wondering if anyone has thought about offering a D4 head swap on the K1 body since it has the 21700 battery/charger.
Is that feasible? or if not is a 21700 d4v2 in the works?

I doubt the parts are compatible at all since the K1 has the charging port and circuit at the head side of the battery tube.

I don’t think Hank is interested in making his EDC-style lights in 21700 since they simply become too big for most people to pocket carry. Better to keep that for throwers that already have large heads and just offer the slightly chunkier D4S for people that want a light with more capacity and mass for heat.

Joemenix
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Any news for the XHP version?

Tom E
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Joemenix wrote:
Any news for the XHP version?

What do you mean by XHP? If it's not a XHP50.2 3V, then it means a driver redesign. Did Hank say he was working on a new driver?

4492011
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Gerrit wrote:
Hank Wang wrote:
EasyB wrote:
Hank Wang wrote:
gregor wrote:
Off topic.

Hank, when do you plan to start selling Emisar D1S replacement?

Thank you

Kind regards

What improvements do you like to see in the D1S upgrade?

The D1S was in a class of its own when it came out in terms of being as compact as possible while keeping the 50mm head size. Then the lumintop GT mini came out with very similar dimensions.

I might like to see the updated D1S keep the 50mm head but be made for 21700 cell. This would make it unique again and give it a power/runtime boost.

Yes, 21700 battery, similiar driver like in the K1, so that the Osram LED can be used to reach 30Kcd+.

21700 battery indeed Thumbs Up + Osram W2 led

I love the idea put me in for a couple !!!!
SKV89
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How about Osram W2.1?

justanotherguy
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Hank Wang wrote:
EasyB wrote:
Hank Wang wrote:
gregor wrote:
Off topic.

Hank, when do you plan to start selling Emisar D1S replacement?

Thank you

Kind regards

What improvements do you like to see in the D1S upgrade?

The D1S was in a class of its own when it came out in terms of being as compact as possible while keeping the 50mm head size. Then the lumintop GT mini came out with very similar dimensions.

I might like to see the updated D1S keep the 50mm head but be made for 21700 cell. This would make it unique again and give it a power/runtime boost.

Yes, 21700 battery, similiar driver like in the K1, so that the Osram LED can be used to reach 300Kcd+.

I re-quoted this as the 300kcd go clipped to 30kcd..
Stock the gt mini with osram was..130kcd..?
I had a GT mini Vn that hit 300 kcd, very nice.
I wish we could see 1000 lumen and 400kcd in a package that small….

Rayoui
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Tom E wrote:

Joemenix wrote:
Any news for the XHP version?

What do you mean by XHP? If it’s not a XHP50.2 3V, then it means a driver redesign. Did Hank say he was working on a new driver?

Hank Wang wrote:
There are actually two versions. One is the 5A Linear regularted driver for the Osram, SST-20, XP-L LED. The other is the boost 2A/12V driver which is for the XHP35 LED.

http://budgetlightforum.com/comment/1579831#comment-1579831

Tom E
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Ahh, that was 5 months ago. Seen a lot of posts after that talking bout it, but nothing that said he was actually planning on it - thanx!

He works with outside contractors for the drivers, so might even be a BLFer, dunno. 2A is a little under powered but it's the common level for XHP35 boost drivers. Certainly nothing new - a lot of lights on the market have single cell boosts for the XHP35 and HI, specially popular in the tactical market. The drain on a single cell is very high. It's what we, and DEL, found out the hard way with the original BLF GT. At 2 amps, the draw is significant, very difficult to achieve 2.5 amps. The XHP35's draw about 13.8 volts at 2 amps.

With loss's, I'm guessing it would have to draw 9 to 10 amps on a single cell to maintain 2 amps. 9 amps is like 20 minutes on a 30T if it can hold the draw til it empties, 27 minutes on a 40T, and that's optimistic. The XHP35 and HI have been around a long time now, doesn't make it obsolete, but it's not the most efficient. Granted though, if you can get one in a good tint, that's where the advantage may be. It also doesn't have the tint shifts of the 2nd generation of CREE's.

Rayoui
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I like the XHP35 HI for its tint and beam profile. I’d expect it to have similar, or maybe even a little better throw than the XP-L HI in the K1 but with a larger hotspot.

A single XHP35 will draw more current from a single cell than something like an XP-L but it also makes a lot more lumens OTF. The boost driver will actually end up being more efficient (at similar currents) because you aren’t wasting any of that power as heat like with a MOSFET regulated driver. 2A on a single-cell 12v boost driver is perfect for using a 50E for a little extra runtime.

Of course if you just want maximum candela, the Osram is still the best choice.

Geronimo
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I love my d1s 3a, this is so tempting. Is there a specific purpose for the green model? I’ve reread this whole thread and didn’t see anything. I’m back and forth on a w1 or w2.

Emisar d1s 3a. ZL sc700d,sc64w hi,H600c,Streamlight tlr1-hl, Astrolux mfo1s 4k/purple. Olight I3t Eos black. Ylp 2m cri.ZL sc64le inbound k1 xhp35 hi in 4k.

Rusty Joe
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I GOT TO GET ME ONE OF THESE!!!!

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Has anyone tried the sst-20 version? I’m partial to that emitter. You thoughts, please.

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Rusty Joe wrote:
Has anyone tried the sst-20 version? I’m partial to that emitter. You thoughts, please.

Just buy the green osram to become a jedi Cool

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Rexlion
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The K1 doesn’t come with a cell, does it? So would a high-drain 18650 (in a size adapter) produce equivalent light output in the K1? Like, say, a 30Q? I already have a bunch of those, and shorter runtime wouldn’t bother me.

As far as 21700 cells go, I think I saw some posts saying the 50E is about the best, but since the 30T and 40T have higher continuous-amp ratings wouldn’t they be better still for output? Question (again, sacrificing runtime)

== We save the planet from darkness ==

Rayoui
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No, the driver in the K1 is regulated so no matter which cell you use, it won’t draw more than a specified amount of current. I think the maximum current depends on which emitter you choose, but they are all within what any standard 18650 cell can supply.

Rexlion
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Rayoui wrote:
No, the driver in the K1 is regulated so no matter which cell you use, it won’t draw more than a specified amount of current. I think the maximum current depends on which emitter you choose, but they are all within what any standard 18650 cell can supply.

Thanks for the info.

== We save the planet from darkness ==

bmengineer
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The XHP35 Hi version is now available to order.

Find all my reviews of flashlights and more gear at www.bmengineer.com

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Rusty Joe wrote:
Has anyone tried the sst-20 version? I’m partial to that emitter. You thoughts, please.

top tier light with a low tier emitter

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JordanZHP
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bmengineer wrote:
The XHP35 Hi version is now available to order.

Thanks for the heads up!

Hank, do you have lumen or CRI numbers for the XHP35 you added?

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The lumen and Cd numbers are listed on his webpage.

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zak.wilson
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Therapist: and what do we do when we’re quarantined?
Me: add to cart
Therapist: no
Hank Wang: I just put a boost driver in the K1

Ceilingbounce – flashlight testing and runtime graphs for Android

Rexlion
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lawallac wrote:
Order placed for [Body color:Creamy LED & Tint W1 Green (Osram CSLNM1.F1) 720KCD]
This thing is going to be like a laser!
I don’t see the lumens listed on Hank’s site for this particular Osram LED in the K1. Does anyone know?

lawallac, have you received this light yet?

== We save the planet from darkness ==

zak.wilson
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Based on the drive current of 2A and tests of the XHP35 HI, that’s likely about 2300 emitter lumens for the 5000 and 6500K versions, so around 2000 out the front, which works out to about 145 cd/lm (it’s the least throwy emitter). A bit less for the warmer ones.

Ceilingbounce – flashlight testing and runtime graphs for Android

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