I soldered three parts of the copper spacer together with 138°C lead-free solder paste. I chose the low temperature solder paste so that I didn’t need to heat up the copper that much.
The finished part
The driver got a double BSM BeCu third generation spring bypassed twice. I bypassed the small inner spring with braided copper wire and soldered a 22AWG wire to the outside of the big spring. The seven XHP70 could draw up to 70 or 80A so I wanted to make sure the beefed up springs can handle this current without melting. I also soldered the 16AWG cables on the driver.
Before I assembled the flashlight I tested the leds and the driver to make sure there are no short circuits and the driver works properly.
Hurray, everything works as expected. It is great when leds and driver work at the first attempt.
So I’m ready for the assembly of the flashlight. A last picture before I start.
A lot less parts then in the first full parts line-up.
Filed and cut a 1mm copper piece to fill the central gap where in the normal flashlight the MCPCB sits.
Assembly is mainly adding thermal paste and putting everything together.
The last thing to do is soldering on the main led cables and the switch.
I took a Sofirn Q8 switch and swapped out the leds and resistors. These are special RGB leds that have an integrated chip which makes them changing colors slowly and automatically. They are 0807 leds, a bit wider than normal switch leds but otherwise just the same. You can’t choose the red, green or blue colors separately like in other Anduril flashlights with RGB leds but when they switch through the colors they look very similar.
The switch leds are fully Anduril controlled. I achieved this by connecting a 47Ohm resistor to R1 and the aux led cable to the other end. I flashed the Anduril version from the ROT66G2 on the driver and it works perfectly.
Big thanks go to Scallywag who explained me how he made a lighted switch on his Astrolux MF02 mod.
Final function testing round
Switch leds work, main leds work. Awesome!
As you can see in the pictures above I added some Glow In The Dark tape around the leds which can be seen later in the reflector.
I weighed the flashlight, short and long version, with and without batteries. Before the mod the short version weights 900g, the long version 1000g. The copper spacer should be around 400g.
At this point, I charged the eight LG HG2 cells I will be using in this flashlight, together with the two Golisi batteries of last years build to compare the two.