What did you mod today?

I need to do the same Ouchy, my work table is almost too covered to get any work done, I’m down to the last few saucer sized sections… and that only because I keep shoving stuff back!

Cleaning the workplace!!! Great idea! I need to do that again, too. Maybe I have time until New Years (resolution time)

my 4 XHP35’s just came in. Has anyone tried throttling them with FET pwm yet?

You need to talk to Scott. (Kawiboy) Or Texas_Ace. He’s been doing extensive testing with his own driver design.

VW, I should have quite a few glass lenses from the Eagle Eye X6’s I’ve turned into triples and quads. A few of those I built with no lens, other’s I swapped for UCLp lenses. I have more than a few, pretty sure.

Titanium is horrible at dispersing heat, even worse than Stainless Steel. Building it as a triple is not really optimal. The 1230 lumen Nichia 219C is perfect in this one. :wink:

I know TA was planning to, but last I saw he hadn’t gotten around to it yet. I’ll see if he sees this post, otherwise I might PM him later.

I tried to emitter swap my Jetbeam II Pro titanium a few days ago.

Unfortunately, I couldn’t get the bezel off. Either I’m doing it wrong or that sucker is glued tight. No luck with my strap wrenches. Might have to resort to a blowtorch (which could destroy the innards), or pliers (which could scratch up the exterior). :weary:

Anyone manage to take the bezel of a Jetbeam II pro yet?

Thank you Sir.
Have a cart in the works from KD but rather see you get something for them. PM sent.
Nick

Don’t burn ’em

You could start with a low pwm value and go up .

Be sure to use the same batteries , and fully charged while you’r testing .

Built a 12mm FET driver for a little AAA penlight, used a 10mm SinkPAD under a 5000K Nichia 219C. With an Efest 10400 at 4.15V is does

0.03A for 5.8 Lumens
0.05A for 9.2
0.35A for 58
1.65A for 311.19
3.02A for 552

Nice step up from the 63 lumens it was making on an AAA NiMH.

Shadow JM07, very weak 26650 tube light. With my new found 7135 stacking skills, I brought the stock 6*7155 driver up to 9 7135’s, changed the small led wires and moved the xm-l2 to a noctigon. Now it is a very good CC general purpose light and sheds heat well!

I put a 219c R90 SW40 from Rey into an old Novatac 120P. Neat classic light, now with a much prettier beam.

18-22 awg. Power loss in the wires comes from the voltage drop in the wires not the overall voltage of the circuit. The voltage drop is directly proportional to the current and any open ended FET driver will bring wire resistance into play at the high current an XHP 70 can withstand. Google American wire gauge table, it lists the resistance in ohms per unit length for solid and stranded wires then just multiply current times length to see what voltage you might lose in each wire size. It’s not much but since LEDs are so voltage sensitive even millivolts cost current.

Thanks rbd !

I will look later on those tables. Probably i wil have to use awg 18 , due to the high current.

Let’s pretend it’s a “mod” and post it.

Nitecore Tube… tailstanding! :stuck_out_tongue:

The reason I did this “mode”, was it’s broken part after a fall:

Don’t believe the promo videos (e.g. BG’s or/& GB’s). If it falls even from medium height, it will break (depends by the angle and the surface it hits on). The good news was that despite the fall and the broken part it was still working, so I thought of using some Sugru and mod it to… tailstand!

Note:
At the 1st picture Sugru doesn’t look pretty. After a while I did some sanding and gave it better looks.
The fact is that it tailstands well. So well, that I wasn’t affraid to picture it standing on the narrow railings of my balcony, using as background Mount Olympus! :sunglasses:

You’re a flashaholic. For sure. Anybody that spends 50% or more fixing a relatively cheap light is sure enough addicted! And THEN even shows PICTURES! Yep, too late for you Evan! :stuck_out_tongue:

Gotta love Sugru, you can mix your own colors even. Mod a light with thicker copper DTP mcpcb’s and have a gap between the head and bezel? Fill the gap with a Sugru color of your choice! Makes the light easy to pick out from others and water proofs it at the same time. :slight_smile:

Yep, you’re right Dale, I come to realize that my BLF signature is nothing else but wishfull thinking! :laughing:

Well, i had been looking forward to this light arriving form the US for a few weeks now.
I had always wanted a Foursevens Mini ML in titanium and they are exceptionally hard to find now.

Really love the form, colour, knurling & material.
Unfortunately i was not on form when doing this mod… :laughing:

A brief summary of the build from start to finish…

First i had to to pick it up from the post office - $20 import tax on a $40 flashlight. Good start…

Opened the light up - aluminium pill :weary:

Didn’t sand down triple MCPCB enough, caught in flashlight head, ripped wires out from board when tightening.
Fixed that but had forgot to camfer the top edge of board - shorts on head again.

Overtightened this time rebuilding - ripped negative wire from soldered in driver again.

Rebuilt and tested, single mode direct drive - driver short.

Remove everything again, smooth down board and reflow - damage one emitter dome.
Another reflow.

Miscalculated space required for tail switch - everything out again and sanded down pill another 2mm which means i can’t use the 17mm LD3 driver and need to use a MTN 15mm instead with made brass retaining ring.

Gets the head all together very carefully, all works but - hair under glass…

Onto the tail, this should be easier, nope - drill hole off centre, out with the mini hand files.
After a while i thought i’ll just use the dremmel to finish off - slips and marks the nice bead blasted satin finish on the tail with the chuck.

Epoxied in tail switch and forgot to check level was below switch contact - out with the dremmel again…

Ok, time for tritium vial installation in lanyard hole - no need to even say what happened to the first one…

I’ve never had so many problems with a build before, it was nearly launched out the window a few times i’ll tell ya :laughing:

Apart from all that i got it finished eventually and this mini pocket rocket is great with the tail switch :slight_smile:

Triple Nichia 219c on Noctigon
15mm MTN FET +1 driver
Press fit copper core heatsink
Reverse omten clicky switch
Green 6mm x 1.5mm tritium vial
8A start up current from AWT 16340

I’m sure glad i didn’t try to reflow my newly arrived Meteor today…

Murphy’s law :confounded: … but you’ve made it! :+1: