"Manta Ray C8.2" - Experiences?

Hi!

I stumbled across this nice looking light:

https://www.aliexpress.com/item/Self-Defense-Manta-Ray-C8-2-CREE-XHP50-2-LED-Flashlight-5-Mode-Camping-Light-Linternas/32834208936.html

I love the looks of it and it seems to be well built (integrated pill, copper PCB, a lot of cooling-fins, a lot of material under the MCPCB) and doesnā€™t cost too much.

So - does anyone have this flashlight and can tell me if the beam is nice?

Interesting light! Looks like an improved C8, curious to see beamshots too :slight_smile:

Sweet!

That particular store has some interesting stuff.

If I was was still buying lights blindly, I would have made several purchases.

Looks like old stock on lights that we played with 5 years ago. They even sell a 12x7135 driver with stacked chips :sunglasses:

Exactly but they seem to updated some ā€œOldies but Goodiesā€.

I wish people did more with the C12s adding some XHP 35/50/70 to then and see if those fins provided any better cooling.

Not necessary. They wont.

have to agree here, those fins are only good for cosmetic purposes

Well, I just bought myself oneā€¦

Iā€™m not sure if the C12 finning is the best possible design, but Iā€™m sure they do something, they are increased surface area and near the heatsource. And to me they look like they significantly add to the heat shedding to the air compared to a C8.

So why wonā€™t they?

Too bad thereā€™s no neutral tint choice. Will be easy to swap emitter, but it does add some cost.

No air flowing inside fins.
Any heatsink made to use without fan should have 5-8mm between ribs. Otherwise air flows same way as there is solid surface.
It is hard to explain. I hope somebody from forum have equipment to take thermal image - X6 is good example to show what I am saying.

Also, usually people think that ribs surface is smth special and more important than solid flats and curves. This is not so, in most situations ribs surface have half less air flow. This means thay you need to take just half of ribs area to calculate heat spread increasing (i.e. 200sq.cm + 20sq.cm/2=5% increase, all numbers are random). In most situations you need hundreds % to feel difference (modern leds quad/triple light have 20-30w power with 5-10w host abilities).

just look at any equipment that uses heatsinks with no fans, ribs are at least 3\8 apart, and up to an inch long, in some cases even longer.

Why did they make that middle fin thicker than the others?? :confounded:

oooh, what a nice light!

It is very well built, I have to say.

- square threads

- anodised threads

- no sharp edges

- perfect Reflector (itā€™s C8 size, hence the name)

- big switch

- nice driver

- LED on copper

- flawless beam - no hole, just a tiny bit of yellow corona

- driver UI is very useable (no flash like the KD driver at low mode)

- Standard-C8 Lens, so the Convoy AR coated will fit (already ordered :P)

  • Convoy C8 bezel fits - but itā€™s a tiny little bit too small - you feel an edge between them - but it also looks kinda sillyā€¦

oneo minor flaw:

- The LED is glued in

  • as Jerommel stated, one of the fins is bigger as all the others which does look pretty weird

All in all - this light is even better than the ā€œā€KDIY K5ā€:https://www.aliexpress.com/store/product/KDIY-K5-Cree-XHP50-2-White-6500K-Neutral-White-5000K-Warm-White-3000K-2650-Lumens/708513_32805632129.htmlā€ - even the beam poattern is much nicer (better hotspot - but itā€™s also OP vs. SMO)

Glad to read this as ordered one last week from a different sourceā€¦cause I need yet another light! LOL

Canā€™t wait till I get it! (Slow boat from China.)

Kaidomain has been offering a c8.2 xhp50 for a few months now. I have several and they are quire good! Aliexpress has been pretty bad for me.

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To avoid anyoneā€™s confusion with what wstrachan wrote above, I wanted to point out that, although the name is the same, the KD C8.2 has the traditional C8 body style and looks nothing like this light, the Manta Ray C8.2 is a completely different looking light, and fits 26650 cell.

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Somewhat similar to KD K5S but with knurling and no stainless bezel, thereā€™s also an SST-40 version:

XHP-50.2, 4-mode, no blinkies, 3A High modeā€¦$33.49
https://www.aliexpress.com/item/Self-Defense-Manta-Ray-C8-2-CREE-XHP50-2

SST-40 Version, 3-mode, no blinkies, 5A Highā€¦$29.50
https://www.aliexpress.com/item/High-Bright-C8-2-Luminus-SST-40-LED

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For anyone else who doesnā€™t like Aliexpress the Manta Ray C8.2 is available on ebay (only the complete light w/XHP50.2, not the host):

https://www.ebay.com/itm/Manta-Ray-C8-2-CREE-XHP50-2-5-Mode-2600-Lumen-LED-Flashlight-Torch-26650-Battery/183052502881?hash=item2a9ec78761:g:VvsAAOSwxKBZ-r7X

(All links are Non-Aff, Iā€™m not affiliated with the seller in any way)

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HOST AVAILABLEā€¦choice of OP or SMO reflectorā€¦$21.65
https://www.aliexpress.com/item/Manta-ray-C8-2-black-flashlight-host

Feedback for Manta Ray storefront on Aliexpressā€¦

(New thread just posted): Manta Ray on Aliexpress