@PiercingTheDarkness
Yes but I mean something ~M21A sizes 
Anyway, thanks for suggestion. Maybe on photos it’s bigger than I think.
Oops.
I changed my mind about the BLF-D80v2.
At $27.70, it's a good deal, but right now it's at $37.70, which I think is too much.
Sorry about that.
I read a topic about this flashlight and for BLF member it should be 27.70$ (or it was months ago). I will try to buy it with discount maybe, which one will give me better throw?
Spend a few $ more and get a noctigon KR1
Actually $28 ($33-15%)
[quote=zamachowiec]
I like this idea I am going to do it to my M21B where do you get your dual springs from?
Zam get the M21b great size that’s if you have 21700 already.
I just use a single one of these over the top 
just don’t do this on the head in case it delivers too much current. Using the 30Q I measured 8.4A at turn on, the LED peaks at around 9.4 ish so 8.5A is fine. I’ve sold plenty and haven’t had a single issue. Not sure what you’d use for the 21700 though
Thanks for that just went to order the parts but cannot find the ramping driver?
I will add that the only reason I have dual springs is because it’s a gun light, stops the battery disconnecting with the recoil. A single one of those springs would be enough.
Installed a BeCu spring I got from BlueSwordM in the Sofirn C8F and that Convoy spring performed the same in it, so you should only need the single spring
Sweet never looked at that one because it had SST40 on it.
Now just need to go order all the parts thanks for all your help. Nothing better than a light that can work so hard you can blow the LED up in it love it.
thx
I already have it in KP CSLPM1.F1 green but don’t really like the green. I will be swapping the driver & LED out with Funtastic suggestion. It’s very easy to do if you have a solder iron. I just built a S11 XHP70.2 did not relies it was so easy.
I also have the 8A C8+ Osram CULPM1 great light. The M21B is a perfect size and I prefer the 21700 cells.
later
Careful soldering a spring as you can quickly melt the switch, I’ve done it a few times.
Anybody with the M21A and M21B and C8+ to check for lego-ability of the battery tubes?
Not sure about the M21s but none of the 18650 and 21700 tubes can swap between lights. Different OD.
@PiercingTheDarkness
I asked Simon for this configuration that you wrote and the price is 26,86$ without cell which I will buy in my country. I have 4 questions for you:
- Ramping driver has no thermal regulation so it’s possible to burn led. At 100% power you said it will works ~2m20s at 23C. Before the led will reach max temperature it can handle it will be too hot to hold in hands or it’s possible that it will burn led but still won’t be very hot? Should I be careful about that or I will propably feel in my hands that I should go to lower ramp?
- I see on Simon chart that ramping driver is max 6A. I have Samsung 35E batteries which are 8A, won’t it be enough? I still need to buy high current cell like Samsung 30Q?
-
Do this configuration need a lot of power or it will work on 3000-3500mAh some time?As I see in your shop it will works around 24 min on 100%, yes?
That’s the same configuration? Convoy C8+, CULPM1 LED, 1300 Lumens (Demo) - YouTube - Your flashlights are made by Simon or you buy parts from Simon and assembling by self?
Thanks for all replies.
1. It is possible to kill the LED if left on too long, as is the case for any LED without a thermal limit. 50°C is the limit until it’ll get too hot to hold, it can handle much hotter than this so it’s not an issue unless you leave it going unattended. Nothing to worry about, it’ll be too hot to hold long before it’ll damage the LED.
2. On the Convoy page for the ramping driver it says 4.5-6A, but this is incorrect. The battery is what will limit the current (amps), so it’ll depend on how good the battery is as to how many amps it’ll run at. With your 35E battery it won’t reach 8A, but might be all you need and it won’t get hot as quick.
3. The driver is configurable to whatever brightness you set it to, so runtime will be based on that. Yes, 24 min is an estimate based on 8A, but your 35E battery will run at maybe 6A so it’ll be longer. Keep in mind that at 100% it’s not continuous because of the heat, my measurement is just an estimate. Using the Samsung 30Q it achieved 2 hr 20 min at the 30% level.
4. Simon makes some of them, but I always take it apart to make sure the LED is centered, screws are tight, and install dual springs. I assemble some of them as well depending what the customer wants. I’ve started using the Osram green in the Convoy L21A at 6A for 1.6km range, it’s very impressive.
Make sure you get Simon to install a high current spring in the tail cap. Also make sure you’re happy with the driver UI. The last picture explains the UI
Same one, yes. That was taken with my old camera so it’s not showing distance that great. This video is better, but keep in mind that using it on a farm is going to limit the range majorly. Using it on buildings will reflect more light, but using it on green grass, trees etc on a farm will reflect less light. I can see out to 550m