And the highest mode is sustained for 9 minutes
Deluminator: g_damian:I made comparison between T2 and T3. Different drivers, different leds, but it was fun
Appears T3 driver pulls alot of current, with AA battery! I like it
And the highest mode is sustained for 9 minutes
If your measurements are correct, the T3’s new driver has a very poor efficiency
T3 100Lm / 2,1A
T2 115Lm / 1A
Is it possible that you accidentally swapped the 14500 / AA measurements?
I wanted to buy from the new driver so far, but this is disappointing. I also don’t like the fact that the output is as poor with 14500 as with AA.
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
If your measurements are correct, the T3’s new driver has a very poor efficiency
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%.
… 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.
Simon Mao: jasontheguitarist: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%.
I just gonna leave this here…
i will have sw519a and BM35AM available after one or two months,
I got some samples.
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 ?
g_damian:… 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.
i will have sw519a and BM35AM available after one or two months, I got some samples.
Awesome Simon!
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?
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
[/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
Reflow
JaredM: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.
Reflow
led bare convoy reflow on mcpcb xhp50.2 6v. I surely did something wrong
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 and led too.
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 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
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.
kokosnh: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 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 3X21A having the same issue in their respective 1Lumen reviews. This trend of nonfunctional thermal management in Convoy lights is concerning.
icpart: kokosnh: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 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 3X21A 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%