Hi all.
Anyone that know where i can get a nice driver on a 20mm board.
I’m going to use it on a C8 with a cree U2/T6. I think around 3A is good output…
Any suggestions?
My C8, and the others I've seen all use a 17mm driver. This is generally considered to be the best for a single-18650 XM-L light.
I like the mode arrangement on this one, but it has visible PWM and is Direct-Drive on high if that's a deal-breaker for you...
http://dx.com/p/5-mode-led-driver-circuit-board-for-flashlight-dc-2-8-4-2v-106796
How come that i have two ultrafire five mode C8 both with 20mm drivers 
I just did a driver upgrade with my uniquefire 2200 and that flashlight had a 17mm driver but both of my C8’s have 20mm drivers….
That's odd... Where did you get your C8s? I've bought several cheap ones from Manafont and a weird one from eBay and they both used 17mm drivers. I did file down the threads on a standard P60 pill to use an an insert in a light that used a larger driver as a way to make a standard 17mm driver fit...
I use this (not very budget, but I like the mode change & low voltage beacon)
http://www.intl-outdoor.com/ld29-28a-12-cell-circuit-board-p-416.html
Paired it with XM-L U2
Tailcap amperage
Double 26650
High : 1.32A (9.5W)
Med : 0.34A
Low : 0.047A
Single 26650
High : 2.67A (9.6W)
Med : 0.55A
Low : 0.083A
To expensive.
Can’t buy a 8$ driver for a 14$ flashlight…
This is the flashlight
:party: ops… maybe suggest a budget 17mm driver plus a 20mm pcb to interlink together ~
I have been looking for a good 20mm driver also for a nice zoomer with bad PWM. Please post if you find one. Mine is DEFINITELY 20mm.
Bump
If you mean as a matter of principle, I think you should reconsider, because what you end up with is a flashlight that is suddenly worth more than $14, because you’ve improved it. Just because something is cheap doesn’t mean you’re somehow bound by some universal law of consistency that states that it’s not appropriate to put components in it that cost more than, say, half of what it’s worth.
It’s a matter of personal preference, sure, but it’s also possible to gain some additional perspective on the matter. I think you should feel free to direct the evolution of any cheap light without such constraints.
I've got similar draws. I also measured the output current on 8.4v input and it's 2.8A at least for the couple of seconds I measured.
That low voltage beacon is really nice.