[BLF Joint-Development] WildTrail BLF Tactical Flashlight

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djozz
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Jerommel wrote:
Lexel wrote:
This driver has a FET, but you can always program a mode group which has on highest mode only full AMC regulated level!
Then Turbo is only available through long press from lowest mode

It combines both regulated and DD into one driver, people need to differ between DD+1 and DD+n+1 driver designs

True.
But it also depends on how much n is.

…and i still think DD is not such a good idea, although it does solve some thermal issues (if the FET is fast enough).

I think you and many others do not understand the advantages of DD FET drivers. It must be something about them being simple and cheap so they can’t be good. The beauty of the direct drive (PWMed to create lower modes) is that by chance of physics many leds when run at high output run at a voltage that is close to the same voltage that a li-ion produces under load. Fine-tune that by adding or lowering the resistance in the system and you have a fairly efficient super-simple circuit that is cheap and extremely robust.

You can keep going on about the disadvantages of direct drive, like that it has no constant output (btw incans never had that, it is a matter of taste, not practicality, if you like it or not) and that efficiency is bad (if measured compared to other types the difference is not impressive), but solving those disadvantages comes at a huge price: bigger pricier drivers with more components that fail earlier, can produce whine, and can never achieve the power levels for the led that a simple direct drive situation can.

In short, I never see flashlights that are nicely regulated and at the same time run at the same power level as a direct drive flashlight. For real output power I only trust direct drive, only for lower level flashlights I trust regulated circuits.

Jerommel
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djozz wrote:
Jerommel wrote:
Lexel wrote:
This driver has a FET, but you can always program a mode group which has on highest mode only full AMC regulated level!
Then Turbo is only available through long press from lowest mode

It combines both regulated and DD into one driver, people need to differ between DD+1 and DD+n+1 driver designs

True.
But it also depends on how much n is.

…and i still think DD is not such a good idea, although it does solve some thermal issues (if the FET is fast enough).

I think you and many others do not understand the advantages of DD FET drivers. It must be something about them being simple and cheap so they can’t be good.

No, that’s not the point at all.
Simple is good, but current regulation is better.
Jerommel
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Lexel wrote:
You could always remove R4 to shut down the FET if you don’t want it

it is FET+5+1
so 2.1A, light can easily run without getting to the thermal throttle if its set to like 60°C


It depends on the LED Vf.
If it’s low, why not use a 3, 4, 5 or 6 Ampere FET CC driver?
With an XP-L or other high Vf LED there’s no need for current limiting.
Scallywag
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Jerommel wrote:

Ah… Facepalm Facepalm Facepalm

But it’s dramatically different than what’s discussed here…
I know that light is out for a while, but i didn’t expect this to be that.


Yup, I could tell you were discussing an alternate version, so I didn’t quote you. The others seemed to be just blindly posting in a group buy thread.

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power911
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May I put my input on these tactical lights?
I love the form factor shown. It really reminds me of Fenix PD35 and Zanflare F1 combined.

But my thoughts of tactical light really comes in 2 versions.

I like the surefire G2x Pro interface. Always on low but double tap to go high. I even got a Solarforce L2M with Nanjg 105C programmed to be the same. No memory always on low with high on double tap.

I also love the interface of Olight M18 Maverick for a dual switch operation.
Single tailcap click is a customizable brightness mode via side switch with memory that will never hit turbo. (The only place to select brightness here)
Double tap to click to achieve turbo (hitting side switch bounce back to common modes)
Triple tap to click to access strobe. (turn off to reset back to 1)

And yes get me that sweet sweet DD Fet but only on turbo. I’m even okay with timer stepdown like the BLF A6 but only on turbo.

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SKV89
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Any word if there will ever be a 21700 tube for this light? The tube diameter is already larger than some 21700 lights.

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I'm Interested for 2 

dorpmuller
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OK, I'm a civvie but if I were a cop I think I would want:

Maybe a dual tailcap switch like Fenix does.. main switch would power light on on high every time. KIS... forward clicky with high, medium, low, period. High would be the max that the LED would be capable of without overheating and making it impractical to use for any length of time. No burn-up-your-pocket turbo. Momentary capability of course.

Second tail switch would give instant strobe, period. Correct me if I'm wrong but I don't think law enforcement is gonna want SOS and all that crap. No side switch you'd have to fumble for. 

Thick AR lens like Surefire uses. SS bezel for dropping on head. Tough enough that you could run over it with a truck or smash a car window. Aggressive heatsinking. Screw on grip ring so you decide whether you want it or not. Ditch the USB charging. Dual removable belt clip. Completely waterproof. Bezel-down quick draw holster included. Matte finish=better grip and looks. 

Cost more but if I was in a precarious situation I want something that's up to the job. I wouldn't want tacticool, I'd want simplicity. It's a tool, not a toy. Has to stand out from the crowd of lights already being made because if it doesn't one is just gonna buy one that is already on the market. 

 

Comments? Texas shooter, whaddaya think? 

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texas shooter
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dorpmuller wrote:

OK, I’m a civvie but if I were a cop I think I would want:


Maybe a dual tailcap switch like Fenix does.. main switch would power light on on high every time. KIS… forward clicky with high, medium, low, period. High would be the max that the LED would be capable of without overheating and making it impractical to use for any length of time. No burn-up-your-pocket turbo. Momentary capability of course.


Second tail switch would give instant strobe, period. Correct me if I’m wrong but I don’t think law enforcement is gonna want SOS and all that crap. No side switch you’d have to fumble for. 


Thick AR lens like Surefire uses. SS bezel for dropping on head. Tough enough that you could run over it with a truck or smash a car window. Aggressive heatsinking. Screw on grip ring so you decide whether you want it or not. Ditch the USB charging. Dual removable belt clip. Completely waterproof. Bezel-down quick draw holster included. Matte finish=better grip and looks. 


Cost more but if I was in a precarious situation I want something that’s up to the job. I wouldn’t want tacticool, I’d want simplicity. It’s a tool, not a toy. Has to stand out from the crowd of lights already being made because if it doesn’t one is just gonna buy one that is already on the market. 


 


Comments? Texas shooter, whaddaya think? 

It sounds well thought out. If you’re making it heavy enough to be run over that extra mass will make high run that much longer. I’ve got a 192 gram flashlight with an XHP-50.2 that will run 1300 lumens and can be held after 30 minutes. I personally carry bezel up in a full length holster. I do this as car seats, seat belts and chairs with arm rest like to pull gear off the belt. However many overs carry bezel down in speed holsters.

I will state again that I carry two lights and consider that there are two types. First is that “Tactical light” with on/off only tail switch at about 1200 lumens. Mine is the Pflexpro. Second is a duty light, a little bit larger and heavier. It has a few modes and could bust a brick.

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