Convoy L6... XHP70 Beast!

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Hezekiah
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FlashPilot wrote:
Typical of nearly every large high powered flashlight, there are huge thermal bottlenecks in the head (observe the pinched areas of aluminum while following the yellow lines from the floor plate to the bezel). This will prevent heat from traveling from the floor plate through the entire head to disperse the heat into the air. The results are trapped heat at the base of the head, which also heats the batteries to high temperatures during extended use (especially the 1st cell). Using your lithium batteries to absorb heat is not good! And once they are hot, they take a long time to cool down inside the battery tube (2X not good!). :Sp

Id like to offer a few suggestions which could transform this light from just another large Convoy into one of industry renowned stellar performance that will smoke its competition in price, functionality, performance and mod friendliness:

  • Bolster the wall thickness inside the head to closely follow the contours of the reflector. Keep the walls as thick as possible. There should be very little space anywhere between the reflector and the inside of the head (less than 2mm). All that dead air we now see between the reflector and head should be solid aluminum!
  • Trim all that wasted aluminum from the fat mid portion of the reflector so the head can be built thicker to help conduct heat.
  • Make ALL the cooling fins the same diameter as the bezel to add surface area to exchange heat with the air. While we have grown used to seeing lights with useless small tapered cooling fins, they are ineffective and only there for aesthetics. The highest concentration of heat is generated at the floor plate where the largest/deepest cooling fins are needed to conduct heat… not those silly worthless little girly fins! :Sp Its time to get serious and offer a light that works as good as it looks!

Something like a scaled up C12 (only much better):

  • Keep the floor plate at least as thick as it appears to be in the rendering. It looks like a chunky 8mm. VERY NICE! The thicker the better.
  • 2 × 26650 cells will get sucked dry in no time at all. Much better would be 3 × 32650 so the famous high capacity/low sag (yet inexpensive) TF32650 cells could be used. The unprotected version of those cells remain the highest capacity of all that have been tested to date (6,700mah) and dont even break a sweat at +10A. Without them, the TrustFire TR-J20 would never be able to reach its fullest, long running mod potential.
  • Is the reflector really only 65mm? Again, the light would get heat soaked very quickly becasue it seriously lacks the surface area necessary to transfer the heat from a +40 watt emitter. Also, the smallish reflector would hamper the efficiency of the large XHP70. How about 100-120mm reflector? This would provide a much larger head surface area to transfer heat while putting out more lumens and throwing them much much farther for the same amount of power. :bigsmile: Its time to stop choking the potential of the incredible XHP-70 and unleash its full capability.
  • Offer separate battery extension tubes for 4 cell mod configurations. Higher voltage/less amps if far less picky with power requirements than low voltage/high amps, while realizing far greater run times. Again, hopefully for 32650 cells. We can always use plastic sleeve adapters to drop down to 26650 cells for those who prefer the smaller cells (Such is the case for the TrustFire TR-J20)
  • Rather a no-brainier, but a Copper DTP MCPCB should be mandatory for any flashlight that creates this much heat.
  • Quality dual sided AR lens… absolutely mandatory.
  • Obviously, also offer as a host kit with the ability to purchase all the parts separately (including orange peal and smooth reflectors), drivers, battery tubes, switches, etc. Id buy a ton of them in bulk quantity if the specs were changed and proven effective!
  • With different battery tube, reflector finish and driver options, this could be a modular system offered from 2 – 4 cell configurations to handle the XHP-50, XHP-70 and XHP-35 while properly dispensing with the enormous amount of heat these emitters generate. A modular system would also keep manufacturing costs down while offering several different configurations… rather than just one mediocre, hot running, inefficient flashlight.

The one guy that could pull this off while maintaining a quality product is Simon. Then we could ditch all those other overpriced poorly designed XHP based flashlights and base our large single emitter flashlight mods in mostly one host. The stock offerings as well as the mod potential could be endless.

So far, the only “out of the box” large flashlight I am aware of that offers proper heat sinking, a great mod host, quality and a fair price is the TrustFire TR-J20, although it could stand to have had larger cooling fins at the base. Simon could do much better while providing the best “beast” light to date.

Im not holding my breath, but it would sure tear down all the other overpriced failures that have been based on XHP emitters so far. The changes would completely transform the light posted in the OP, but would also make it worthy for the XHP-70. Otherwise, its just another 65mm XHP (but with legendary Convoy budget quality).

Maybe offer both!!!! :bigsmile: :bigsmile:

What do others think?

I like the 100 to 120 reflector.I would buy it today!!!

PrinceValorum
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Hezekiah wrote:
I like the 100 to 120 reflector.I would buy it today!!!

Same. I wish there was an affordable host for the Lum 5-90. I’ve searched high and low, and PVC isn’t my style, hah.

DB Custom
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The 5-90 fits in the Olight SR-90 pretty well. Smile

Dale

PrinceValorum
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PrinceValorum][quote=Hezekiah wrote:
I wish there was an affordable host for the Lum 5-90.
DB Custom wrote:
The 5-90 fits in the Olight SR-90 pretty well. Smile

Do let me know if you’d be interested in selling the host for ~$50. I’d be very interested. Big Smile

tarver
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I hope Simon offers xhp50 or triple xhp50 in this light.

J-Dub74
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tarver wrote:
I hope Simon offers xhp50 or triple xhp50 in this light.

Well that’s not going to happen because then I’d have to change my thread title to “Convoy L6 …XHP70 or XHP50 or XHP50 triple Beast!” and that’s just confusing not to mention a bit wordy. Wink
Honestly though there is no plan to make the complete light in anything but the XHP70 at this time… however, this light will be available as a host so the sky is the limit.
DB Custom
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Unless you’re looking for Copper for heat sinks, not gonna find much of that in the sky. Just sayin. And finding triple optics may only be slightly easier than creating your own from scratch depending on final interior head size. I’ll probably be finding all that out on my own, but still…

Triple emitter flashlights at mega power are a nightmare for a manufacturer. Litigation and all that. Interesting though, the concept of manufacturing bursting the safety bubble. It could happen… (not holding my breath or giving away the lathe just yet)

Dale

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nqcken
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definitely interested

SteveBS
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Hey J-Dub,

is there any progress? Why can Simon not talk to us directly? Does he not speak English???

Greetings

Stephan

Mukcep
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I have heard something about release after 20-21 april:

Quote:

simon mao
2016-03-31 20:47
will on available after 20days
SteveBS
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What will be the benefit of a group buy with others? A better price? That would be fine. Who will arrange this group buy?
Set me on the list please! Smile

Mukcep
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SteveBS wrote:
What will be the benefit of a group buy with others? A better price? That would be fine. Who will arrange this group buy?
Set me on the list please! Smile

I think it will be pretty cheap without group-by.
~60 USD without 15% BLF discount.
FlashlightEDC
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I am certainly interested in this light. And the 15% blf discount is really nice.

KawiBoy1428
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Define “BEAST” for me……. Big Smile

KB1428 “Live Life WOT”

PrinceValorum
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Wow, that L2 really puts things in perspective….

KawiBoy1428
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That L2 in the middle is a Safe Queen now, very few lights are. Not to be touched, unless needed! NOT to be sold! Special! Modded with a XHP50 J4 1D (shaved of course) RMM FETDD 5 level driver pulling 9.74 amps, fully potted and heat sinked (special), well it’s the little Beast that could…. Big Smile L2XHP50 J4 1D on left (shaved) L2XHP50 4300K pulling 8 amps. (dome on) Left. Wink

KB1428 “Live Life WOT”

DB Custom
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6000+ lumens= Beast

14,555 lumens, Beast annihilator. Big Smile

Dale

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DB Custom wrote:
6000+ lumens= Beast

14,555 lumens, Beast annihilated Big Smile

(Fixed that for you) Big Smile
Defined! Beer

KB1428 “Live Life WOT”

DB Custom
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Kawi, you’ve got some honking hoss lights there man! That TR20 is probably the sleeper in the bunch, I know how thick that tube is, haven’t seen the head on one but I understand with all those fins and a lot of mass it’s a true gem!

The BTU Shocker that’s making the big numbers is also a chunk of aluminum in it’s own right. And get’s hot anyway! Richard talked me into running 3 18650’s in it and I saw 20,000 lumens, but it vaporized the traces on the battery carrier in the few seconds it took me to get that reading. I’ve rebuilt the carrier with copper sheet material of sufficient gauge to take whatever, but I haven’t put it back on the light box with 3 cells again. That’s triple XHP-70’s on a 17mm FET driver Zener modified. I’ve got individual TIR optics NOA61’d into each reflector cup to bring the beam into a good profile with no dark spots. Wink ($30 worth of TIR’s alone!)

Dale

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Thanks Dale! Got a X60M with XHP70’s in it, kept pushing the driver with resistor changes and it finally poofed! Crying It “WAS” amazing. Big Smile It’s laying around here in a box in pieces somewhere? :/ Maybe should dig it up and give her another go, 3FETDD-LDO E-switch drivers, Crazy The Shocker lacks battery supply, great upper end design, piss poor bottom end. The TR20-2 is something else, needs some machine work for a bigger mcpcb though and get rid of the dimple in the middle! Wink I think this one might be thee “Beast” of the single XHP70’s, no? Big Smile

KB1428 “Live Life WOT”

J-Dub74
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You guys make me so jealous! I wish I had the tools, knowledge and experience to do these wonderful things. Still I thoroughly enjoy watching what you skilled modders do with these lights. I like my stock L2 but I know it’s capable of so much more. That’s what makes BLF so awesome. Take a cool light to start with and make it into something jaw-dropping. Cheers to Dale, KawiBoy and all you other mad scientists. BeerBeerBeerBeerBeerBeer

HorizontalHunter
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The Convoy L6 or the Thorfire S70? Which XHP70 to get?

Choices, choices, choices.

Bob

Vegetarian: vejiˈte(ə)rēən/noun: old Indian word for lousy hunter.

DB Custom
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I have really liked every Convoy I’ve gotten and the L2 is one of the best yet. So I’m looking forward to the L6 with high anticipation. That said, the S70 is also an impressive light. Simon has his work cut out for him, for sure!

Dale

gungoat
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I have not been here for a long time, but I know the answer, get both!!

DB Custom
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Great answer! (when you get the wife telling you that you’ve got it made!)

Dale

KawiBoy1428
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gungoat wrote:
I have not been here for a long time, but I know the answer, get both!!

You know I say, you can never have too many XHP70’s and a couple XHP50’s also!!! Big Smile So I’ll patiently wait for the new L6’s! Steve

KB1428 “Live Life WOT”

HorizontalHunter
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DB Custom wrote:
Great answer! (when you get the wife telling you that you’ve got it made!)

Still working my on that one.

She doesn’t believe me anymore when I say “Just one more” Facepalm

Bob

Vegetarian: vejiˈte(ə)rēən/noun: old Indian word for lousy hunter.

J-Dub74
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HorizontalHunter wrote:
DB Custom wrote:
Great answer! (when you get the wife telling you that you’ve got it made!)

Still working my on that one.

She doesn’t believe me anymore when I say “Just one more” Facepalm

Bob


You are not alone my friend.
Even when I explain why “this one” is truly different than my other lights I know she is only hearing Charlie Brown’s teacher… Wink
Kusie
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LOL I´m with you, boys Wink It´s hard explaining the fleshl.. uh, flashlight needs to your “government” Wink
Wife and kids think I´m crazy needing more than ONE flashlight! When a new one arrives I tell them “oh it´s just cheap chinese stuff, don´t worry…” Cool

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