【convoy】GT FC40 3000K-3200K available now

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Simon Mao
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clientequator wrote:
I like the frosted lens idea! Will it be available to buy on your aliexpress shop?

it’s easy to find them in China ,what degree do you need?

adam7027
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Simon Mao wrote:
Chatika vas Paus wrote:
Simon Mao wrote:
2.sorry ,the lens is not suitable,i will launch another lens version

Do you already know what optics you would like to use? It would be great if it was compatible with Yajiamei optics.
For example with this:
Frosted Yajiamei optics

Um. I don’t decide which one yet. It is easy to buy them in China. I will select the appropriate one.

Then, my suggestions for 20mm × 12.8mm Yajiamei optics:

Clear surface:
- all of them should be checked for each unique LEDs to be used with, because beam artifacts would be visible depending on light emitting surface shape and textures
- also, less suitable to mix tint of the LED
- 5 degree variant gives the most throw
- negligible spill outside the hotspot, most of the light is focused in the hotspot (or there is a small corona as well)

Beaded surface:
- handles the different LED emitting surfaces very good, mixes tint better
- negligible spill, but it is a bit more than spill of the clear surface, also, slightly textured
- my personal choices: 10 or 15 degree gives very good throw; 25 degree is the best for general usage; 38 degree is a bit floody, above that, definitely floody, but still defined hotspot

Frosted surface:
- handles different LED emitting surfaces very well, even the worse ones (best tint mixing ability)
- much more light is present in the spill
- my personal choices: 15 degree gives a nice, conical profile gradually strengthening hotspot, 30 degree is already noticeably floodier; 85 degree feels like an extreme flooder (almost no hotspot perceived)

I regularly use Yajiamei optics in S2+, so my recommendations would go for:
flashlight: 10 and 25 degree beaded, 15 degree frosted
headlamp: 38 degree beaded, 30 degree frosted (also, 60 degree beaded and 45 degree frosted, if more flood is required – e.g. for close range hand work)

Di_Joker
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Simon Mao wrote:
clientequator wrote:
I like the frosted lens idea! Will it be available to buy on your aliexpress shop?

it’s easy to find them in China ,what degree do you need?


I do not know how to explain, translucent.
For S3, C8 and S11 Smile

Sorry for my poor english.

NWoodsman
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Nobody discussing the most important issue. Headband color!

I vote for black band with gray “Convoy” text, please use the font from the s9/mk.

Thro
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NWoodsman wrote:
Nobody discussing the most important issue. Headband color!

I vote for black band with gray “Convoy” text, please use the font from the s9/mk.

+1 Big Smile

Simon Mao
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update
2019/3/16
unfortunately,i didnt get SST40 5000K
ramping driver is ready
here is the link of flashlight
black C8+ with SST40

non-flickering

modes

Satan@103TFS
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Looking good any C8+ 21700 soon ?

Marc E
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Simon Mao wrote:
here is the link of flashlight
black C8+ with SST40 like the demo video! But i think it’s wrong… it starts in third mode, shouldn’t this be first mode?
Inkidu
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Simon the S11 is a nice size. Easier to hold for me and offers some more heat sinking. The upcoming 21700 S2+ will be sure to please. I wanted to share that a 20mm driver would fit into the driver ring if it is flipped over and soldered. Thanks.

Any update on the 22mm to 17mm adapter?

johnkey68
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Comrade Tamagotchi has a great selection of different drivers!





zak.wilson
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What kind of driver is it in the non-PWM C8? Adjustable current linear? Buck?

Ceilingbounce – flashlight testing and runtime graphs for Android

HONDARIDER
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I’d really like to see some of these warmer/neutral SST-40’s. My Astrolux FT03’s are delayed. Anyone selling bare emmiters?

zak.wilson
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I wish Luminus would introduce a high-CRI SST-40. That would interest me. Until then, I’ll add another mention for the LH351D. It has great output at 3A and can be overdriven quite a bit beyond that without any problems. I don’t know why Chinese companies seem disinterested in it – perhaps Simon is in a position to shed some light on that.

Ceilingbounce – flashlight testing and runtime graphs for Android

BlueSwordM
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It’s not easily available in China.

Chinese companies seem to have disinterest in buying products from other countries.

Probably because they have to pay import fees, taxes and customs, etc.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

adam7027
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zak.wilson wrote:
I wish Luminus would introduce a high-CRI SST-40. That would interest me. Until then, I’ll add another mention for the LH351D. It has great output at 3A and can be overdriven quite a bit beyond that without any problems. I don’t know why Chinese companies seem disinterested in it – perhaps Simon is in a position to shed some light on that.

+1 for Luminus should make 95 CRI SST-40, and that could be sold like sugar.

Unfortunately, SST-20 is somewhat limited in output, but still, it is reasonable to drive it up to 3.5A (I would not go over that for efficiency reasons, but based on BLF measurements, it is still safe at 5A).

Also, Luminus should make 95 CRI 4500K, that would be quite something Smile

(I already gave away two Convoy S2+ with SST-20 4000K installed for friends, as they love it.)

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With the new C8 driver you could also build a 3v XHP50.2 lights. I think the 3v LED is rated for 6amps.
Id love to see some pics of the new driver and will you sell it separately?

oweban
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Agreed with high CRI 4500k or 5000k SST20 – 4000k is just a little tooooo warm.

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oweban wrote:
Agreed with high CRI 4500k or 5000k SST20 – 4000k is just a little tooooo warm.

CRI is not everything. Number one is tint. In a flashlight, it’s better to have a 80CRI with the right tint than a lower efficiency CRI95. Those I would reserve for interior lighting, where a bit extra power consumption isn’t an issue. Currently I like the XML2 T6 5D4 a lot (from Simon), slightly rosey, but not too much. Excellent!
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Is there another to way to buy this new C8 with ramping UI without using aliexpress? I can’t update any of my information on their site.

Give me thrower or give me pizza.

dropman
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Am I the only one who dont understand how new “ramping” firmware works? Can someone explain? Light starts in max mode. Then two taps brings 1.5A mode, and 3 taps brings strobe (or anything else from function mode selection)? I though ramping is stepless selection of brightness, but maybe I dont understand something…

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Normally ramping works by holding down the power button, light will “ramp” from minimum to maximum brightness, once at maximum it goes in the reverse direction max > min.

You simply let go of the switch when desired brightness is reached.

zak.wilson
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Convoylover wrote:
Number one is tint. In a flashlight, it’s better to have a 80CRI with the right tint than a lower efficiency CRI95.

That’s very much a matter of opinion. 80 CRI is 400% more color error than 95 and usually results in an output difference around 20%. I’ll give up a lot of efficiency for 400% less color error.

Tint versus CRI is more subtle. 95 CRI with a Duv of 0.01 would be horrible. 95 CRI with a CCT of 9000K would be horrible. On the other hand, I’d take a little more green, as found in an SST-20 FB4 or usually seen in the 4000K LH351D for 90+ CRI versus a 70 CRI XP-L HI 5D, which has a beautiful white wall tint. I’d similarly take 4000K and 95 CRI where I wanted 5000K if I had to drop to 70 CRI for 5000K.

When I go outside with my 80 CRI lights (current most-used: Thrunite TC15 with 80 CRI, 4500K XHP35 HI), everything looks a bit flat. Details require more focus to resolve. Some people don’t seem to notice this as much, but I certainly do. Since a suitable 90 CRI XHP35 HI (or other throwy 12V emitter) hasn’t appeared in single quantities, I’m thinking of building something else to fill the TC15’s role.

Ceilingbounce – flashlight testing and runtime graphs for Android

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I’ve organised a small group buy a time ago, four of the lights were 4000K Ra:98 R9:97 with a duv of 0.001 at 350lm. The buyers were no hardcore flashoholics. And… none of them did really like them. Three compared it to the XPL-HI 5D 80CRI from a Emisar D4 and proffered it over the high-cri light which they said was ugly greenish. So yeah, tint is of most importance.

Small relativisation: a not overly positive duv at warmer CCT’s (4000K and below), let’s say 219C 4K level, dlooks actually good in woodlands, for obvious reasons. Trees are not rosy.

virence.com Nichia E21A sw30+sw40 Wizard Pro ; Skilhunt H03 XP-E2 660nm ; Wizard Pro E21A 2000K ; S2+ E21A sw40 d220 ; Sofrin C01R 660nm, Mf01 Mini Nichia 219B sw35+sw40

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Ryzbor wrote:
I’ve organised a small group buy a time ago, four of the lights were 4000K Ra:98 R9:97 with a duv of 0.001 at 350lm. The buyers were no hardcore flashoholics. And… none of them did really like them. Three compared it to the XPL-HI 5D 80CRI from a Emisar D4 and proffered it over the high-cri light which they said was ugly greenish. So yeah, tint is of most importance.

Small relativisation: a not overly positive duv at warmer CCT’s (4000K and below), let’s say 219C 4K level, dlooks actually good in woodlands, for obvious reasons. Trees are not rosy.

“My small sample size anecdote is irrefutable proof that others’ preferences are wrong”

What you like most is completely independent from what works best. I think the tint of the Optisolis is ugly compared to a lot of lights, but its absolutely undeniable that it offers better color accuracy and identification.

Simon Mao
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Satan@103TFS wrote:
Looking good any C8+ 21700 soon ?

in production now ,about one month

Simon Mao
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Marc E wrote:
Simon Mao wrote:
here is the link of flashlight black C8+ with SST40 like the demo video! But i think it’s wrong… it starts in third mode, shouldn’t this be first mode?

just 3rd mode as an example ,i will take time to make it more comprehensive

Simon Mao
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Inkidu wrote:
Simon the S11 is a nice size. Easier to hold for me and offers some more heat sinking. The upcoming 21700 S2+ will be sure to please. I wanted to share that a 20mm driver would fit into the driver ring if it is flipped over and soldered. Thanks.

Any update on the 22mm to 17mm adapter?

!{width:100%}https://i807.photobucket.com/albums/yy353/inkidu2007/DSC_6590.jpg!

yes,in production ,i need some more time

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Simon Mao wrote:
Satan@103TFS wrote:
Looking good any C8+ 21700 soon ?

in production now ,about one month



hoping the headlamp is soon…..

Simon Mao
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everydaysurvivalgear wrote:
With the new C8 driver you could also build a 3v XHP50.2 lights. I think the 3v LED is rated for 6amps. Id love to see some pics of the new driver and will you sell it separately?

yes,i have 2 sizes,
one 17mm
one 22mm
and i’ll have 20mm later
i will add the driver in my store today

Simon Mao
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LarryLumens wrote:
Is there another to way to buy this new C8 with ramping UI without using aliexpress? I can’t update any of my information on their site.

you can use paypal ,too
you can send private message to me

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