DIY Idea C8 XHP50 DD

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mdeni
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DIY Idea C8 XHP50 DD
I am searching the internet about a C8 and an extension tube for it, but many of the threads(screw part) are different. And I live in Europe where shipping from china tends to be months long, and if I experiment with threads a year will pass with ease. So my question is this:

Where can I find a cheap C8 clone with an extension tube that fits? I plan to bypass the driver, so the driver does not matter. And I plan to change the emitter with a XHP50 or XHP70 perhaps depending on availability.
I chose the C8 because of the reflector which gives a good throw and does not waste any of the power of the led. And the extension tube is the cheapest and perhaps best way of driving XHP to the ragged edge.

Price of a C8 or host is under 10$, and the extension ~5$, and an emiter 13$ so all in all under 30$.

Maybe you have a better budget suggestion for a ultra cheap thrower featuring XHP35/50/70.

P.S. I was looking for the XHP35 as a small emiter size led, but it is driven only by 4×18650 at +12V. Hosts with 2 series batteries are scarse, but with 4 are almost nonexistant or not cheap at all.

Edited by: mdeni on 08/06/2016 - 05:39
The Miller
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Welcome to BLF!
Nice first post!
Subbed.

djozz
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The C8 with a xhp50/70 direct drive on 2 18650 cells will not have enough heat dissipation for that, but if 1 minute runtime before overheating does it for you all is fine. I do suggest using a C12 instead, will not have enough surface area either but at least a bit more than the C8. Example with OP reflector (you want OP for xhp50/70):
http://www.kaidomain.com/p/S023744.UltraFire-C12-Cree-XP-L-V5-1A-1400-Lu...LED-Flashlight

dhvl1357
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Also, IMO, that large a die from the xhp won’t be quite as good in the throw dept with a reflector the size of the C8’s. I would think it’d be quite floody and reach farther purely on the merits of outright lumens.

Slow is smooth; smooth is fast.

mdeni
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The Miller wrote:
Welcome to BLF!
Nice first post!
Subbed.

Thank you.

djozz wrote:
The C8 with a xhp50/70 direct drive on 2 18650 cells will not have enough heat dissipation for that, but if 1 minute runtime before overheating does it for you all is fine. I do suggest using a C12 instead, will not have enough surface area either but at least a bit more than the C8. Example with OP reflector (you want OP for xhp50/70):
http://www.kaidomain.com/p/S023744.UltraFire-C12-Cree-XP-L-V5-1A-1400-Lu...LED-Flashlight

Okay then, if you say so. I already have the 1405, and the XHP70 is destened for it. I was inspired by this post http://budgetlightforum.com/node/42586. The C12 has some problems with battery length, so perhaps C8 XP-L HI with FET driver is your suggestion as I see. I might go that way.

dhvl1357 wrote:
Also, IMO, that large a die from the xhp won’t be quite as good in the throw dept with a reflector the size of the C8’s. I would think it’d be quite floody and reach farther purely on the merits of outright lumens.

XHP50 should in theory have the same die size as XML 5×5. The XHP70 is larger than that. I would go with the XHP35 in a heartbeat but that cannot be powered from 2 cells. There is no 6V version of that die, yet. Extremely dissapointing for me. That is a die that can go completely parralel on 3V but they decided a 12V option should be the only choice.
The Last Katun
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You want a good and economic thrower XHP35? I did it this way:
As host I chose a Ultrafire LZZ F13 (22 mm. diameter original driver.)
Then I bought this Driver: (22 mm. Diameter)
and then this *XHP35 HI*:

You have to use a good 26650 or a 18650 IMR, only changes the driver and the LED, no other changes.
(Add also a proper “Insulation Gaskets”)

mdeni
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The Last Katun wrote:
You want a good and economic thrower XHP35? I did it this way:
As host I chose a Ultrafire LZZ F13 (22 mm. diameter original driver.)
Then I bought this Driver: (22 mm. Diameter)
and then this *XHP35 HI*:

You have to use a good 26650 or a 18650 IMR, only changes the driver and the LED, no other changes.
(Add also a proper “Insulation Gaskets”)


That is amazing. I havent seen XHP35 driver before. Thank you. Very nice suggestion, and if you have a review or a comparison of some kind it would be sublime.

I hope in the near future more drivers will be produced for driving 6 and 12V lights. (at much more volts 8 and 16V at least) It is nice indeed, but the emiter is capable of so much more than 12V, in the area of 18V directly driven with pencil sharp factory dedomed…

Still, thanks for the idea, it is very good.

thijsco19
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There is also a driver that only needs a 2s sertup to power an XHP35.
http://budgetlightforum.com/node/46997

lostheplot
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djozz wrote:
The C8 with a xhp50/70 direct drive on 2 18650 cells will not have enough heat dissipation for that, but if 1 minute runtime before overheating does it for you all is fine. I do suggest using a C12 instead, will not have enough surface area either but at least a bit more than the C8. Example with OP reflector (you want OP for xhp50/70): http://www.kaidomain.com/p/S023744.UltraFire-C12-Cree-XP-L-V5-1A-1400-Lu...LED-Flashlight

Djozz is on the money i built up a convoy c8 with 2× 18650 and xhp50 got hot real quick
Pulled around 7a so ive gone back to 2×18350.and will prob go back again to a xpl hi
As the c8 reflector isnt that good with the xhp50.and i guess thats what the host was designed for.i had to rethread the tube to suit as coulnt find 1 to fit

sorry all images down
thanks photobucket

The Miller
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Djozz is a wise man, when he speaks it usually is solid.

Yet an extension tube for a C8 sounds interesting!
(BTW you know of the S50 from Thorfire? User X3 sells one and man oh man what a sweet light that is with maybe the best cooling design I know.

Xoden
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Why not up the budget a bit and go for Thorfire S50/S70 or Convoy L6?
Or even this XHP35 baby http://budgetlightforum.com/node/47837

-X3-
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If you decide to go for the S50, have a look here

"-X3-, is there any place in your house without a flashlight ?" 

My Flashlight public album (mods, emitter swaps, eye candy)

My reviews channel (French language, Olight, Thorfire, Sofirn, Lumintop : 60+ lights tested)

My personal channel (including Olight SR mini, S1, S2, S1A and S-mini disassembly)

M4DM4X blog, saves you $$$ 

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C8+XHP50 have a ‘dark spot’ (donut) in the middle of the hot spot.
Aluminum Alloy Extension Tube for 1*18650 C8 LED Flashlight:
https://www.fasttech.com/products/0/10007058/1575200-aluminum-alloy-exte...

mdeni
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Thank you guys. Very nice suggestions. Perhaps I would have made a mistake with xhp50.

I tracked this for a few days, and it really is the best C8 there is, in my oppinion. Very little modding required, and yesterday was 20$, today is on sale for 16.5$. I got it. I will see if 3.5A is okay. If not, a FET driver will be put in and massive wires. I hope I won’t destroy the switch.

Yesterday was the first time that i saw this 10×7135 driver with 5 modes, coupled with xpl hi, it is a no brainer. I prefer to have 3 modes only, the stars should help that. http://www.aliexpress.com/item/U-F-C8-CREE-XP-L-HI-V2-1600lm-Cool-White-Light-10×7135-Driver-5-Mode/32691871058.html?aff_platform=aaf&sk=jUFEiaUFA%3A&cpt=1470771122822&dp=1c2a0a24-92e3-df5f-f033-015670ca4c30&af=115210&aff_trace_key=428266bd4bab4311b07e40c93187d75b-1470771122822-07770-jUFEiaUFA

robo819
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Here is what the Thorfire C8 with THIS FET driver (guppydrv firmware) and a dedomed XM-L2 U4 1A on Noctigon , spring bypassed with 20awg Turginy wire at both ends , and 4.89 amps at start , looks like at 140 yards (barn) and at 500 yards (2 Far trees side by side).

140 yards to front of barn

500 yards (2 far trees)

Click any link to see MY REVIEWS:

Maxtoch M24 Sniper / Maxtoch 2X Shooter (2016 factory dedomed) , 2X - XHP 70.2 / Maxtoch Xsword / M1 Archer *** ### ThruNite // Archer 2A V3 / Ti4T / TN4A HI / TH10 / TH20 / C2 Mini / TC12 V2 / T01 /  , neutron 2C V3 , TC20 / Catapult V6 / TC15 / TC15 CE *** ###  Olight // H2R Nova , S10R III / S30R III / H1 Nova / H1 R Nova / X7 Marauder , PL Mini ,  M2R warrior //// Orca T11 / Nitecore EC20 / BLF A6 / Custom Convoy C8 / Lixada Triple 3800LM / Lixada 1000LM / LuxStone X30 / Manker E02 / Manker E14 II /  ### Thorfire /// PF03PF04 , Upgraded PF04 , C8 , S-50 ,  VG-10 , VG25 , C8s , BL30 , TK4A  , S1 , VG15 S  , TK 18 //// ##WowTac// A4 , A1 (original) , A2 headlamp , A3 //// Acebeam L16 /// Massdrop (Lumintop) Brass EDC

BobbyMK
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For the price it seems like a good deal, but i would suggest DTP board for the led and AR coated lens as a first upgrade and then if u want more power go for a FET +1 driver with bistro firmware, should be over 100000cd easily if paired with nice battery (30Q, 25R, VTC5 etc..)

 Olight i3s, Olight S1, Olight S Mini, JetBeam Jet-1, BLF 348, Astrolux S41S, UF SK-98, Convoy S2+ 3*XP-G2, Convoy S2+ 3*XPL, Convoy S2+ 219CT, Convoy M1, Convoy C8, Brinyte B158, Courui D01, Convoy L6, Noctigon M43

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I am thinking of building an XHP50 light based on the Supfire L3 chassis. It already came with an extra tube and will run 26650’s. Given the beam pattern with a single XM-L2, I think it will do ok with the XHP50. It is also a fairly solid light with an integrated shelf for the LED. I just hope it can get rid of enough heat. A hard driven XM-L2 0D dedome does not hardly even warm it up. Currently running a single cell and Mountain 22mm FET.

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k

mattlward
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Serp wrote:
C8+XHP50 have a ‘dark spot’ (donut) in the middle of the hot spot. Aluminum Alloy Extension Tube for 1*18650 C8 LED Flashlight: https://www.fasttech.com/products/0/10007058/1575200-aluminum-alloy-exte...

The doughnut hole would disappear at some point, correct?

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k

Serp
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No. If You use SMO reflector. Like in the Courui 01

mattlward
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So, would roughing up the dome solve the problem? Or even say a little scotchbrite on the bottom third of the reflector?

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k

Serp
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>> So, would roughing up the dome solve the problem?
No, i’m dont think so.
the problem is because of the x-cross in the LED (mtg2 dont have it) . it can be solved with OP reflector which have very large pils.or DIY mate dome on the LED .
I’m DIY roscher f16 whith OP reflector + xhp50. It’s also have “donut” in the hotspot, so i use TIR 25 optic with buble for this light.

Serp
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