I discovered that one of my C8F 21700 lights lacks a screw inside its head. Can anyone help me to find out the correct size of the screw I need for the center hole, i.e. the one that is behind the driver and that tightens the reflector and the MCPCB? M3 seems to be too large, so maybe it's M2.5? Is there a reliable source in Europe/Germany where to get the right screw?
I used this schematic picture to show what I am looking for. Thanks for any help!
Thanks for the pictures and update JasonWW. Wishful thinking on my part.
I noticed that myself. Hoping that the upcoming Convoy C8+ 21700 has some thinner walls. I don’t really see the need for the wall thickness. If your going to add weight, it would be better served in cooling the head.
It would be great if the C8+ 21700 body would fit into a 18650 C8 head. Maybe the dimensions are just too far apart.
FYI, Barry works for Sofirn and commented in your thread even. You are in for a huge disappointment and reality check if you expect constant and clear communication from these guys (nevermind it’s during a national holiday). Just set your expectations to this all the time.
Hi guys, i order c8f sec version with 21700, does anyone know how much power stock driver can put? I wanna change it with XP-L2 v5, wonder if they will work on that driver without modification, and is it worth changing XP-L? Thanks.
The C8F seems to typically draw from 7-10Amp as measured at the tailcap, with some people reporting 12-14Amp draw (after tweaks to minize resistance and improve heat management.) This should be more than adequate to drive the emitters you’re proposing.
The change from stock XP-L to XP-L2 is probably not going to result in a significant bump in brightness. Most users performing such a changeout would typically do so for a change in the “tint” (to something cooler or warmer depending on personal preferences) and/or an increase in the Color Rendering Index (CRI) of the output.
Thank you, that’s what i wanted to see, well it’s not some huge increase in light output, but it is in current draw, 19.1A with xpl2 v6 is crazy, no way to handle that heat, host is too small…will keep everything stock then, just to change wires with thicker ones.
Need to try putting some convex lens and set up focus when i need better throw for long distances, will see how that works and post after i finish it. Next step is making laser out of c8f…hehe
Having now owned and used the Sofirn SP70, I can see how there are people who likes the 26650 more than the 21700. The Sofirn SP70 has definitely become my favorite light and I love the 2x26650 battery configuration. I just plain love Sofirn.
If you are desperate, you might try spraying the reflector in clear paint. When it dries it has a orange peel texture. This is an old school technique.
I have a spare working C8F 21700 “head” back from when Sofirn realised that these lights weren’t outputting the full lumen count (along the lines of a bad MOFSET or something) because Sofirn sent me a new, upgraded “head”.
If I were to buy just this host I assume it comes with the battery tube and switch so that I can put my “original” lower-lumen C8F 21700 head on the new battery tube from the host? Will it fit properly?
I received the C8F recently and consider ordering the host version to build a triple with more throw. Are there any beamshots of the triple XPL-HI available? They would be my go-to LEDs of choice, not so sure about SST20s.