[MOD] Courui D01 build for MauiSon

Beautiful work on this. What’s the calculated candela output?

FmC great build thread! I just started my own Courui build last night after feeling unmotivated, this will definitely help with that. Great output results too! Nice.work

Nice work and creativity.

well done mod!
thanks for sharing!

MauiSon soon has a light to be proud owning it

It’s been a long wait and the gray Courui I originally ordered was a victim of China Post, but I am so happy that it’s coming soon.

Does this come with an instruction sheet for the new UI?

Beam shots will be posted, when I get everything figured out here.

Wow, FmC! That’s nice :slight_smile: I’m lusting already :bigsmile:

Three questions:

  • would you be willing to build me a similar one?
  • would it approach or even better 600 kcd?
  • how much would it cost?

I’d much appreciate it if you would pm me with an answer.
Thanks

Cheers guys :beer:

I measured at 10m, about 320Kcd.

Yes, I printed out TomE's instruction manual, & tucked it inside the tube :)

It will be interesting to see what you think of it compared to the M24 from the group buy. Although I already know the answer ;)

To get into the 600 club, you are going to need a bigger reflector. Something like this.

You could probably punch above 400 with the stock reflector, the latest bin XP-G2, de-domed, with UCL lens, but the beam is getting pretty narrow by then.

Excellent mod. Great idea with ground wire screwed to the body. It is good to see that this flashlight is still one of the top budget and mod friendly hosts.

Cheers. Not quite as epic as your copper pimped D01 :)

Fantastic mod.

I envy your skills, and your knowledge :-D

Great inspiration for others

Nice! You can tell that you did this mod more than once, everything is clean and well thought-out. (everytime I finish a mod I think about how much better it would be if I'd do it again without all the mistakes and the un- and resoldering mess ).

Question: so I understand that the XP-L Hi survives direct drive on three parallel 25r's? What was the drive current?

Thanks.

I didn't take current draw measurements - I was hoping someone like your good self might do a torture test on the HI :)

I couldn't imagine the current being anywhere near the 'popping point', regardless of how many cells. My charger over-charges slightly to 4.25v, but we know it's going to need higher voltage under load for the LED to draw much over the 5-5.5 Amp range.

I over charged a Purple Efest to 4.35v and poofed a V3-2B HI! :bigsmile: But I read of V3-2B HI pulling 6amps and Living? :~

Nice, excellent work! Glad to see the firmware being used. I use the firmware lock-out all the time in my lights, though the hardware lock-out, specially with the recessed tailcap boot in this D01 design is better.

Not sure about that. With a single cell, that cell has to deliver all the amps which in turn causes the voltage to sag.
But if you use multiple cells in parallel the current draw is distributed among the cells, with each particular cell delivering less current that with just one cell the voltage stays higher and thus letting more current flow.

Thats how I understand it :bigsmile:, feel free to correct me.

BEAMSHOOOTSSSS

X10000!!!

That's right, it would be interesting to graph the difference in voltage sag between one cell & 2/3/4, etc.

We still have a starting point of ~4.2v though, & it's only going down from there.

I just measured vDroop in my other D01. Resting voltage was 4.0v, which drops straight down to 3.8v on full output.

Looking at Djozz's XP L testing, a solid 4.2v under load should be around 7Amps, but in the light, if we are dropping around .2v, that brings us down to ~5.5Amps straight away.

Of course, that number will vary somewhat, depending on the type & charge of the cells.

Not so long ago I did a test on one XP-L1 Hi led and the voltage was 0.2V lower than the two XP-L tests that I had done a while ago. See https://budgetlightforum.com/t/-/35024

(See the test thread for an explanation of the sudden dip in the Hi output)

Thanks for the info, Djozz. I'm sure I would have read that thread when it was posted....

No wonder you asked the question. It would be good to see some graphs on the newer binned Hi's.

When I have a little free time, I think I'll do a comparison of Vdroop between 1/2/3 cells in my other D01.