I have bought some 16awg silver plated teflon wire from the US which I’m hoping will carry the current ok.
Twin FET set up so the firmware controls both FETs and they run at predetermined %’s and the second switch will control the third driver which is there only as a lockout.
Are those Carclo optics? Dale recently found you get a lot more (apparent) light out of Khatod optics. Something to think about before you cut down your heatsink.
The Khatod’s are available at Cutter and the Cutter quad mcpcb is designed to accept them, it’s the reason for the slot instead of a hole for the legs.
Tighter beam, more output. Taller optic as well so the heat sink will be shorter.
Edit: Might be worthy to note I had a bit of issue with the Khatod quad over XP-L HI emitters. I had the HI’s in my little DBC-04 Titanium light and one of them got the bond wire broken by the very small opening of the TIR on the Khatod. I now have 219C’s in it and they’re working fine. Also might make note that when I built a Quad X6 with XP-L HI’s I ended up with less lumens than a 219C variant due to the lower Vf of the 219C. Something to think about anyway.
Curious, you gonna leave the cells in 8.4V configuration and run Zener modified FET’s to the quad board with the LED’s in 2S2P configuration?
Edit: Are you aware that you can take the battery carrier’s apart and replace the narrow gauge brass rod that carries ground with an 18ga Turnigy wire for better current? Spring bypasses are a must.
Already ahead of you on that one Dale. I actually have a third carrier I have already started working on. I’m converting them both to 4S so will end up with 4S2P. All traces are being beefed up with 3mm braid with solder in it, springs have been bypassed and the little domes they use for the positive contact have been replaced with solid brass buttons. I’m also replacing the ground rods and hopefully will be able to use the 16AWG Teflon wire I got.
The openings on the khatod optic are indeed very small. I wonder if a lot more light is lost (not collected by the optic) when the larger XPL HI is used.
It sounds as though I might be safer just using the Carclo optics. I don’t want to have problems with the emitters in this light. They cost a small fortune!