【convoy】GT FC40 1800-2000K R9050

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LAMPUSAKU
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Hello forum,anyone have experience with SFT70?,i’ve seen video of SST70,but none of the domeless version. I have one on the way,along with convoy xhp70 4,8a6v boost driver. Planning to set the led in my M21d. Any insight would be very helpful
Cheers

..you'll see perpetual change..

g_damian
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Tartarus wrote:
If your measurements are correct, the T3’s new driver has a very poor efficiency Shocked T3 100Lm / 2,1A T2 115Lm / 1A Is it possible that you accidentally swapped the 14500 / AA measurements?

Sorry for the confusion. I don’t have reliable way to measure lumens, those are just number relative to each other.

It should be interpreted this way:

  • T2 LH351D 14500 has 189% of T3 219B 14500 brightness.
  • T2 LH351D AA has 115% of T3 219B AA brightness.

They aren’t comparable in any different way:

  • They doesn’t mean that output on different battery type is equal.
  • They doesn’t mean that output on 14500 is brighter by 74%.
Tom E
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g_damian wrote:
...  T2 LH351D AA has 115% of T3 219B AA brightness. ...

But how can the T2 AA be brighter on less than 1/2 the amps of the T3 AA? 1 amp vs. 2.1 amps? Think this is what we are confused about.

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trmgkl wrote:
Simon Mao wrote:
jasontheguitarist wrote:
Have the group issues with the 13 group AA/14500 driver been fixed yet? The T3 and bare drivers I got have incorrect groups 12 and 13. I wanted to order a couple more drivers if they aren’t still messed up.

For this batch, I will correct the modes as follows,In the next batch of production, I will adjust it according to your opinions, and I can add more groups to meet your requirements.
I hope everyone can express their ideas enthusiastically.

Group 1 1%, 10%, 35%, 100%
Group 2 1% 10%, 35%, 100%, strobe, biking, batcheck, sos
Group 3 100%, 35%, 10%, 1%
Group 4 1%, 20%, 100%, strobe, biking, batcheck, sos
Group 5 1%, 20%, 100%
Group 6 100%, 20%, 1%
Group 7 1%, 10%, 50%, strobe, biking, batcheck, sos
Group 8 1%, 10%, 50%
Group 9 50%, 10%, 1%
Group 10 20%, 100%, strobe
Group 11 20%, 100%
Group 12 100%, 20%
Group 13 100%

Hello Simon,

Can we have group with: 1% – 3% – 10% – 35% – 100%? I feel like sometimes 1% is not enough and 10% is too much. 3% mode in between would be perfect.
Maybe 1% as moonlight/firefly mode and 3%-10%-35%-100% as low/medium1/medium2/high?

Also, would it be very difficult and/or expensive to create driver where users can program their own groups? For example bluetooth connectivity and smartphone app or usb cable and PC/web app? I’m curious.

Cheers
Thomas

Affected by the accuracy of the chip and the sensitivity of the human eye to the difference in brightness. I estimate that many people do not feel the brightness change between 1% and 3%.

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id30209 wrote:

I just gonna leave this here…







 


 



 

i will have sw519a and BM35AM available after one or two months, I got some samples.

thefreeman
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Simon Mao wrote:
i will have sw519a and BM35AM available after one or two months, I got some samples.

Great to hear, what CCTs are you planning to offer ?
All 9080 color rendition ?

thornton90
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Tom E wrote:

g_damian wrote:
…  T2 LH351D AA has 115% of T3 219B AA brightness. …

But how can the T2 AA be brighter on less than 1/2 the amps of the T3 AA? 1 amp vs. 2.1 amps? Think this is what we are confused about.

The 219b is that inefficient compared to the lh351d.

id30209
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Simon Mao wrote:
i will have sw519a and BM35AM available after one or two months, I got some samples.
 

 

Awesome Simon!

WTB Titanium 4sevens 2xAA tube

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Simon Mao wrote:
i will have sw519a and BM35AM available after one or two months, I got some samples.

This is great news

Also, any news on the green reflecting AR coatings and/or ultra clear low iron glass?

https://fundrazr.com/osturaband

No affiliation, just a fan.

Pacolux
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LAMPUSAKU wrote:
Hello forum,anyone have experience with SFT70?,i’ve seen video of SST70,but none of the domeless version. I have one on the way,along with convoy xhp70 4,8a6v boost driver. Planning to set the led in my M21d. Any insight would be very helpful
Cheers

I had two and they both burned very quickly, even the second at only 5A
LAMPUSAKU
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[/quote]
I had two and they both burned very quickly, even the second at only 5A[/quote]

O ok, did you get them installed by convoy or did you reflow them?

Thanks for the reply Pacolux

..you'll see perpetual change..

Pacolux
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Reflow

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Scallywag wrote:
JaredM wrote:
I did tests of 4 different Osrams: HHL532, CSLNM1, CSLPM1, and CULPM1.

1mm² are peaking around 4.75A and 2mm² are best at about 6.75A. 3030 vs 4040 doesn't honestly seem to make a real world difference.


I'm sure instant turn-on numbers max out at up to an amp or so higher, but this is not sustainable beyond 1 or 2 seconds. I take my readings at ~5sec, or basically right after they settle in. Continuing from there, they'll gradually fall as the heatsink warms up. Bone cold, instant startup values are highly misleading and not something you should spec a flashlight to, but they will look impressive on paper.


I'd be a lot more interested in how these outputs are holding up after a few minutes.

JaredM's findings indeed agree with what I also found in a CSLPM1.TG build I made long ago, soon after led4power started listing these leds at his store. I ended up driving the CSLPM1.TG a liitle above 6.5A or so (measured), by means of modifying the Convoy regulated linear “8A ramping driver” replacing its stock R005 sense resistor with a stack of R010 plus R025 plus R050 in parallel sense resistors.

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

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Pacolux
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Pacolux wrote:
Reflow

led bare convoy reflow on mcpcb xhp50.2 6v. I surely did something wrong
kokosnh
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Is Convoy M21B GT-FC40 thermoregulation working?
Just yesterday saw this post on reddit, guy got 80C on fins, is it one off, or is there something wrong with thermal control on it.
(link is external)
 (https://www.reddit.com/r/flashlight/comments/qy72hy/she_is_hot/(link is external))
I'm planning to buy two of them for bike for off road trip (so I won't feel the heat, but I still can be burn, when trying to take it out, or to turn it off, after an hour or so of it working).
And well it can harm the battery Sad and led too. 

icpart
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kokosnh wrote:

Is Convoy M21B GT-FC40 thermoregulation working?
Just yesterday saw this post on reddit, guy got 80C on fins, is it one off, or is there something wrong with thermal control on it.
(link is external)
 (https://www.reddit.com/r/flashlight/comments/qy72hy/she_is_hot/(link is external))
I’m planning to buy two of them for bike for off road trip (so I won’t feel the heat, but I still can be burn, when trying to take it out, or to turn it off, after an hour or so of it working).
And well it can harm the battery Sad and led too. 


In that picture most stupid thing is to cover flashlight cooling fins with paper. On my M21B FC40 thermal control work fine. Without cooling the temperature never excited 60-62°C
From reddit post
Quote:
I always suspected that she was heating above 55 °C. Got 67°C on first turbo activation and 80°C + on second one (stopped the test here). I know that this thermometer is pretty unprecise, but still.
If you dont go with second turbo it is safe. Also at 35% temperature go max around 55°C. With cooling or on bike 35% or 50% is safe also turbo without any second activation.
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icpart wrote:
kokosnh wrote:

Is Convoy M21B GT-FC40 thermoregulation working?
Just yesterday saw this post on reddit, guy got 80C on fins, is it one off, or is there something wrong with thermal control on it.
(link is external)
 (https://www.reddit.com/r/flashlight/comments/qy72hy/she_is_hot/(link is external))
I’m planning to buy two of them for bike for off road trip (so I won’t feel the heat, but I still can be burn, when trying to take it out, or to turn it off, after an hour or so of it working).
And well it can harm the battery Sad and led too. 

In that picture most stupid thing is to cover flashlight cooling fins with paper. On my M21B FC40 thermal control work fine. Without cooling the temperature never excited 60-65°C

The product page says it’s limited to 55C. If yours reached 60-65 that may not be outside of safe temperatures, but it doesn’t mean the thermal management is working correctly.

I’ve seen reports of L7 and 3×21A having the same issue in their respective 1Lumen reviews. This trend of nonfunctional thermal management in Convoy lights is concerning.

icpart
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tactical_grizzly wrote:
icpart wrote:
kokosnh wrote:

Is Convoy M21B GT-FC40 thermoregulation working?
Just yesterday saw this post on reddit, guy got 80C on fins, is it one off, or is there something wrong with thermal control on it.
(link is external)
 (https://www.reddit.com/r/flashlight/comments/qy72hy/she_is_hot/(link is external))
I’m planning to buy two of them for bike for off road trip (so I won’t feel the heat, but I still can be burn, when trying to take it out, or to turn it off, after an hour or so of it working).
And well it can harm the battery Sad and led too. 

In that picture most stupid thing is to cover flashlight cooling fins with paper. On my M21B FC40 thermal control work fine. Without cooling the temperature never excited 60-65°C

The product page says it’s limited to 55C. If yours reached 60-65 that may not be outside of safe temperatures, but it doesn’t mean the thermal management is working correctly.

I’ve seen reports of L7 and 3×21A having the same issue in their respective 1Lumen reviews. This trend of nonfunctional thermal management in Convoy lights is concerning.


I tested now and at turbo maximum temperature was 61°C at room temperature of 23°C without any cooling just stand up flashlight. Yes it is hot on touch. Before I was tested thermal regulation and its work. With cooling with fan I can reach 1500 lumens from FC40 stable, if I turn off cooling output will go low to 35%
kokosnh
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OK, will just buy then and test them (got 2 multimeter with temperature probes). I always tested the max current, and the parasitic drain, and AUX drain, never tested the temp regulation, but maybe I should do it to. With Anduril UI, you just have to calibrate the temperature sensor yourself, and you can set the temp ceiling yourself. But here you just have to trust it. 

icpart
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kokosnh wrote:

OK, will just buy then and test them (got 2 multimeter with temperature probes). I always tested the max current, and the parasitic drain, and AUX drain, never tested the temp regulation, but maybe I should do it to. With Anduril UI, you just have to calibrate the temperature sensor yourself, and you can set the temp ceiling yourself. But here you just have to trust it. 


Yes I test temperature with contact probe of my DMM UT71E. Thats is the best way to measure surface temperature. I didn’t trust at all of any IR thermometer to be accurate for that little flashlight body.
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In all honesty, long ago there wasn't any sort of thermal regulation on these “regular” flashlights, and I don't recall hearing many complaints in this regard, if at all. People would just learn to use their flashlights properly, period. It doesn't takes much effort to sense how the flashlight body temperature raises while holding it in your hands, with it set in the highest modes. This way you Wink know. Bear also in mind that while holding the flashlight in your hands, you also cool it. For this reason, leaving the flashlight turned on over a surface while set in a mode who would cause it to reach a noticeably high temperature while in your hands, is surely going to cause it to reach an even higher temperature if left alone that way for enough time.

Now, the kind of people who got used to learn to use their unprotected and modified “pocket rockets” responsibly usually ends up removing the NTC resistors on the drivers, as for us it can be more of a hassle than an advantage. I perfectly know what is to have a small flashlight pumping out 30+W of power continuously in my hands without any other “overheating protection” besides my fingers pressing the on/off switch, and I know how to take care of it. Innocent 

The human mind, and its programming, is at the forefront of a particular battle of The Light vs evil dark forces. Nearly every human being on this beautiful planet “Earth” has some sort of negative mind programming in its mind. And you better take care of your mind programming, or someone else will in this wicked world.

Please avoid fully quoting lenghty posts, namely with nested quotes. Trim quotes down to the essential. Helps with neatness and legibility. Thanks.

Keanu Reeves may need your help. Join his Telegram channel here.

icpart
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Barkuti wrote:

In all honesty, long ago there wasn’t any sort of thermal regulation on these “regular” flashlights, and I don’t recall hearing many complaints in this regard, if at all. People would just learn to use their flashlights properly, period. It doesn’t takes much effort to sense how the flashlight body temperature raises while holding it in your hands, with it set in the highest modes. This way you Wink know. Bear also in mind that while holding the flashlight in your hands, you also cool it. For this reason, leaving the flashlight turned on over a surface while set in a mode who would cause it to reach a noticeably high temperature while in your hands, is surely going to cause it to reach an even higher temperature if left alone that way for enough time.


Now, the kind of people who got used to learn to use their unprotected and modified “pocket rockets” responsibly usually ends up removing the NTC resistors on the drivers, as for us it can be more of a hassle than an advantage. I perfectly know what is to have a small flashlight pumping out 30+W of power continuously in my hands without any other “overheating protection” besides my fingers pressing the on/off switch, and I know how to take care of it. Innocent 


Yes I removed the NTC from my Convoy lienar driver. I used it in one KD host and want to have maximum turbo time because I will use that mode only on my bike helmet.
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My M21B GT-FC40 runs fine at 35% for quite some time, plenty of light at that too.
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Not having thermal regulation on a light can be acceptable. Advertising thermal regulation when it does not work is a problem.

kokosnh
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@Barkuti the problem is, I want to buy them for my bike, for off road riding, so I won't feel the heat. 
And it's advertise to have thermal control, so I can't harm the led or battery, and I will probably use the 100% mode all the time, and trust that thermal regulation, if it works.
I want all the light I can get, without harming the battery or LED. 

icpart
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kokosnh wrote:

@Barkuti the problem is, I want to buy them for my bike, for off road riding, so I won’t feel the heat. 
And it’s advertise to have thermal control, so I can’t harm the led or battery, and I will probably use the 100% mode all the time, and trust that thermal regulation, if it works.
I want all the light I can get, without harming the battery or LED

I tested again with second activated turbo and control works bu very slow down output. My M21B reached 70°C I turn off flashlight at that point. So be ware not use at all turbo or just use 35% or 50% output which is safe. Also on bike you have active coolling. I also used my M21B on my bike two weeks ago. On turbo it is stay about 2-3 min and step down. So for riding it is not best mode at all. Stay with 35% at which any boost Convoy drivers have stable output and you will be ok with temperature.
Simon Mao
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thefreeman wrote:
Simon Mao wrote:
i will have sw519a and BM35AM available after one or two months, I got some samples.

Great to hear, what CCTs are you planning to offer ?
All 9080 color rendition ?

Yes, all R9080

NVSW519AE
sm455M450L5R9080

NV4WB35AME
sm455E800KR9080

Simon Mao
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JaredM wrote:
Simon Mao wrote:
i will have sw519a and BM35AM available after one or two months, I got some samples.

This is great news

Also, any news on the green reflecting AR coatings and/or ultra clear low iron glass?

I will gradually use green ar-coated lens on all products

LAMPUSAKU
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Hi Simon, any details over M21e with culpm/sft40, try checking your official store for details about output current but those but cannot find any. Thank you.

..you'll see perpetual change..

LTC
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Can’t wait for this to happen. Hopefully soon.

By the way Simon, it has been more than 3 months on the Quad TIR,(S21C/S12 Base). How’s the progress?

Simon Mao wrote:
thefreeman wrote:
Simon Mao wrote:
i will have sw519a and BM35AM available after one or two months, I got some samples.

Great to hear, what CCTs are you planning to offer ?
All 9080 color rendition ?

Yes, all R9080

NVSW519AE
sm455M450L5R9080

NV4WB35AME
sm455E800KR9080

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