Convoy L2/L6 modding thread

Wouldn’t you know it…I go reread / youtube amp draw measuring only to find out my Fluke 1587 only does 400ma, and has a blown fuse, to boot.

Remember mine has the Infineon and if your getting SIR800, it may be apples to oranges.

I tested the drivers with a Nichia 219 triple so on LDO drivers I did not drive the driver and LEDs with 2S voltage

My guess on that glow is a faulty 7135 that causes a very low leak current

Ok, thanks for that. Then chances are my second driver may not exhibit the same when I install it.

That makes my one of a kind light, “extra special”. :+1:

You may be right, but I’ve observed the glowing with a FET-only driver with Zener mod.

I just experimented with a couple FETs I bought from mtnelectronics. Their spec is for ~1 microamp leakage current at 0V gate voltage and 20V drain-source voltage. I measured it with an LED in the circuit and got less than 0.1 microamp at 20V (not measurable on my DMM) and the LED did not glow at all. So FET leakage at 0V gate voltage cannot explain the glow. With my sliding resistor 7xXPL light the lowest setting has the gate voltage not equal to 0V, so that could explain some higher leakage in that case. But when I had a FET-only driver with Zener mod I also observed the glowing, so this is unexplained by me.

To satisfy my curiosity I measured the current through an LED necessary to notice the glowing. It needs about 5 microamps to clearly notice the glowing. To measure this I just put a 4.7 megaohm resistor in series with the LED while adjusting the voltage and measuring the current.

My Noctigon Meteor M43 will do this, glow when off. I have 12 XP-L emitters and a single 17mm FET driver, not zener modified as I’m running 4P cells. I have to keep it in lockout or it will drain the cells.

It makes 11,700 lumens in Turbo, so I’m not going to complain about a slight glow when off. :wink: (After I typed that 11,700, my memory question check kicked in. It’s up around 11,000 I know but that specific 11,700 is possibly wrong.)

Found my old cheap meter with 10amp dc capability (I dont have a clamp meter). Made 2 X 6” 10ga leads. Measured Stock L6 vs TA Driver L6 mod on the same Keeppower Protected cells @ 4.16v = 5.4 amp vs 7.6 amp, does that seem reasonably close as comparison? How would 40% increase in amps relate to lumens? I don’t have a lux meter.

Got some of the new Shockli 5500mah on the way, expect they will do better.

I’m new at this.

Look at djozz’s XHP70 measurements to get an idea of the output increase. They are buried in the long XHP70 thread. If you do a Google image search for ’XHP70 test” you will see the graph. Just a rough estimate is 40% increase in current might give you 30-35% increase in lumens.

The shockli cells will perform better. Where did you buy them?

Ordered them direct from Shockli / Windyfire.

Quote from Shockli:

“Please check the below cost of 4pcs Shockli 26650,5500mAh battery

goods value:$4.78*4=$19.12

shipping cost by Fujian post: $8.4, it will take about 20-25 days to your place.

paypal handing fee: $1.1

So the total cost of the order is $28.62,”

Thanks. That’s a real good price if you buy enough to spread out the shipping cost.

I meant, do an amp draw at the tail with the light off, not on. That way you can see the amount of drain.

Had to enlist my wife as a third hand, to switch side switch off. Amps dropped to 0.00 (display resolution only shows hundredths).

Got a new Convoy L2 in today, XM-L2 NW, almost 1000 lumens on a single cell. While I really really dig the dimensions on the single cell beauty, I had something else in mind. :slight_smile:

I did some machine work on it to fit a 26mm MaxToch mcpcb onto the shelf, loaded a XHP-35 E2 3A emitter on it, bored out the driver bay to take Mountain Electronics MTN Buck driver at 27.5mm and 2.5A for the 12V emitter.
No tail spring bypass and with a rigged spacer as the cells are a bit short (I’m using 3 extension tubes, 4 Basen 26650’s) It’s making…

0.01A for 2.59 Lumens
0.05A for 71.42
1.03A for 1193.7
2.42A for 2352.9 and 2270.1 at 30 seconds.

Edit: Lux is 258Kcd for 1015.87M throw. :wink: Not fantastic, but not too bad either.

I machined inside the head and outside the reflector to allow the reflector to sit deeper, used Simons taper centering ring he designed for the XP-L, works great! Kind of a Convoy tribute to the old 4 cell MagLite of old. :smiley:

(had to double up on some pain meds, made it through pretty well, covering the lathe back up in the shop is a major pita though, ugh!)

Yeah, that’s too high a range. You’d need to switch to milliamps. Maybe one of your other meters can read it.

Nope, with your tactical setting you won’t be able to measure it as it will turn on in turbo mode as soon as you connect power. Don’t try it! You’ll blow a fuse.

My FX30 when switched off at the side switch draws 1.45 millamps. I keep the rear switch on only at work and recharge the batteries every week and I haven’t noticed the drain at all.

Is that the xhp35 HI version?

Some of the factory big dog throwers are getting triple that CD. Maybe the reflector is just not optimized for it? A little too small, not quite the right shape.

Yes, it’s the E2 3A HI XHP-35. I’m only pushing it to 2.42A, and it’s in the smaller Convoy L2, so hardly comparable to the ginormous TN42… not in size nor in price level. :wink:

The E4 bin is 20% brighter and of course if pushed harder there’s more to be had out of it. My TN42 was bumped and it didn’t quite do 3 times this (712Kcd, not 774), but still, it’s an exceptional light and not matched by many, if any. When it comes to putting it downrange, diameter of the reflector is mega important, and of course depth has it’s part in the equation as well. 88mm vs. 52mm, not really in the same class, and nearly $200 vs $65? Yeah, well… (no, I didn’t pay $65 for the L2, but the driver and emitter and larger mcpcb come into that price)

I’ve built a lot of lights, some of them on the larger side, and 700Kcd just is not an easy target to hit! I got 665Kcd from a Olight SR-90 Intimidator, wasn’t easy there either, large reflector or not.

Anyone know if it’s possible to get a replacement reflector for the L2? OP reflector if possible, but stock SMO would work too.

Reflector’s external dimensions ?

Jensen, just send Simon a message on his AliExpress store site, he’s a great guy and will more than likely fix you up.

Really liking this Convoy L6 set up with Texas Avenger + Narsil ramping. Really easy to fine tune the brightness to virtually anything you want. Side switch, on & off has memory from wherever your last ramp position was. From any ramp level you can even double click to turbo, then single click off, then back on and it goes back to your previous memory level. That’s cool.

Think I’m gettin spoiled.

I think this is a great result. I’m planning on playing with the H2-C single cell boost driver in the L2 to see if I can make it put out 2.5A. I’m planning on changing out the inductor for one with less resistance.