Courui Big Head overhaul with XP-G2

That much throw for such a relatively small amount of total expense? It’s crazy, I would say.

Very nice pics, btw.

very nice work FmC :beer:
what numbers do you get @ 10 m?

Very nice. I particularly like the tail switch. :slight_smile:

340kcd

Somewhat short of 1 million, I’m afraid to say :wink:

Stick a UCLp AR lens in there and watch how high that throw number jumps. :wink:

My dedomed XM-L2 is making 369.25Kcd.

Nice work on that tail switch, not sure all three points were necessary at under 5A, but you gave it the whole 9 yds at any rate. Makes me want to add a switch to my XM-L2 version. It’s currently sitting awaiting use with the battery tube screwed out to break connection. Would be nice to not have to do that!

nice work

Congratulations! Very good work :wink: thanks for sharing :slight_smile:

The switch in the tail cap is a brilliant idea, one of those that makes you say “Hmmm, why didn’t I think of that?”

Took about an hour to do what with getting everything out and putting everything away, and it’s just perfect! Positive lockout to keep the e-switch from draining the cells. The e-switch still works as expected and this is the icing on the cake.

Really appreciate you sharing the idea and pics.

Nice mod and wonderful to see such a writeup. Thank you very much :-)

Very nice mod FmC! :beer:

I thought I am the only one getting this “moonlight mode” when it is off, so is it really normal? I did the same thing like you by bridging the sense resistor and I couldn’t get rid of this annoying “moonlight mode” when it is supposed to be completely off! I reflowed the LED a few times (wasted a few drops of my AS5 as well :expressionless: ) and even have changed it into a new XM-L2 just hoping to solve this issue but I still failed. It could be my soldering skill is poor but I have inspected every connection as carefully as I could but I didn’t notice anything strange though.

I see it as an issue… I even have created a thread here looking for opinions. Does anyone else have this issue? I couldn’t find other people experiencing this yet.

Best mod I can think of for the Corui, and very smooth work on the tail switch, well thought out! And you would think that the 32mm Noctigon should be wide enough to provide clearance for any reflector, but no.., LOL

bibihang, if I remember correctly there was some talk about some drivers not liking the sense resistor completely bridged in that it messed with the PWM to the extent that it wouldn’t completely shut off, not recognizing the off level through the e-switch. There needs to be some resistance for the driver to recognize off.

Great mod!

Back when I did my light my approach to the lack of lockout was very similar to what I did in the "retard light". I made twisty "switch".

Copper plates soldered to the battery circuit board and fujick under (added some extra JBweld when I did the tailcap).

I also added lots of grease to the threads after it was done.

Difference between good contact and complete lockout is half a turn. :)

Nice job FmC!

Threads like this annoy me though :frowning: I ordered my Courui 10 days ago and its not fair that everyone else is playing with their lights and I dont have one…

I’m going off to stamp my foot and sulk now.

Hopback, I’ve had both of mine for several months or longer.

Nice work on the reflector too. That looks solid :slight_smile:

Nice mod.

Nice pics .

Nice explanation .

Thanks for sharing .

Is there not enough ‘meat’ in that bit of the reflector just to file off enough to clear the solder pads?

I had to do this to a DX 73mm reflector and I was surprised how thick the alu was on that bottom edge.

Thanks again all.

I can’t take any credit for the switch idea - Ouchyfoot used one in that location for his series mod. It’s as if it was ‘meant to be’ there…

@ Hopback; Yes, there is enough meat at the corner of the reflector to file it for clerance. I done that as well, but did not have a picture of it.

@ bibihang; I’m sure I read of other’s having the same issue (besides you) with the LED staying on, so I was expecting it to happen.

@ DBCstm; Where did you get the lens from? I’m also planning an XML version when my other Courui arrives, but I’ll be sticking a BLF DD in there :beer:

I have BLF17DD’s piggybacked into both of mine. The MT-G2 one is using 6 Efest Purple 18350’s, that one has the switch pcb raised to allow room for the double cells in each bay, so it won’t take a switch.

I’ve got the reversing UI on both of em such that Turbo can be reached from off as easy as Moon. Being able to turn it off from the tail on my XM-L2 version is very nice, really have no clue why I didn’t think of that…

I used an UCLp from flashlightlens.com, the best AR lens in the business. Their UCL glass lens is hands down the highest transmission lens out there, but not available in the size for the Courui D01. Crazy as it sounds, there’s a massive jump in throw for the money spent. From 341.5Kcd to 369.25Kcd by swapping the lens.

97 yds to the red oil drum. Taken with my standard settings from the Canon G1X…ISO1600, f/5.6, 1/2 second exp., manual mode, manual focus, 2 second timer.

same settings, except f/5.8 and 610 yards to the white barn… if you click on the picture and look at it full size, the trees behind the barn are 744 yds away. Not sure if the white metal building at 968 yds shows through the trees in this shot. (slightly right of the barn and of course behind the trees, only slightly visible as some white above the barn and just left of the flag pole. This is more visible in the winter when there’s no leaves on the trees.)