What did you mod today?

Good job! :beer:

I hear ya djozz, some of the lights need much more distance to properly gauge the throw but still, ANSI set’s the standard, not me. If everyone measures at the same distance, we can all comprehend the number… if everyone measures from whatever distance they see fit then the number is meaningless as far as everyone understanding it and being able to compare it to their own results is concerned. Hence, 5M standard. Pretty sure ANSI also has a 15M standard for larger lights. Gotta look it all up again, my fishnet memory bank has lost pertinent data.

Edit: FWIW, ANSI and NEMA FL-1 Standard require testing distance of 2M, 10M, or 30M depending on corresponding flashlight size. A quote from Selfbuilt… “Note that the ANSI FL1 standard requires measures be taken at 2m, 10m, or 30m from surface of the lens, as appropriate for the size of the flashlight head and output width. ” The main rule of thumb seems to be that the distance is squared and the meter reading is multiplied by that number, this, they say, will produce the same results from any distance. (grain of salt)

They claim that the candela will not vary with distance, but we know better don’t we? My TK-61 converged out around 30-40’, so it wouldn’t perform well in the lesser distance tests for smaller lights. The “standard” distance found on the packaging labels of most lights is 5M. For apples to apples comparisons and to maintain the understanding, following the standards is recommended.

ANSI-NEMA FL-1

It is not that you will find significant different numbers measuring at 5 meter or 6 meter, it takes a very peculiar flashlight to find that. I dare state that the variety in luxmeter calibrations, even if a quality meter is used, is greater than this difference.

I agree, but the problem is one of standards, being able to compare a light built and measured in Russia or Germany or the UK to one built and measured in Texas USA. The issue, Mitko is repeatedly building C8’s with 190Kcd and higher, while nobody here can get close to that. So what is the difference? I used the highest binned XP-G2 available, Richards Buck driver at 5.5A , a UCLp lens and a brand new C8 with new cells… 158Kcd is the best I can tweak from it. That’s a significant difference, so where is that coming from? This is why standards are important, so slight differences from measuring techniques can be eliminated and hardware problems solved.

I filed off the ledge of the centering ring on the X6 so it fits completely around the emitter package, and the focus is still good, so thanks for this suggestion.

I measured the throw at 5.05m and it was about 2% less than that measured at 6.05m for the X6.

Just built a triple using a SolarStorm K2 with 3 XP-L V6 2C emitters with ledil cute-3 SS optic and 12mm FET driver from mtn electronics. I don’t have access to a lathe, so for the spacer/heatsink I bought an appropriate diameter section of aluminum from onlinemetals.com cut to the correct length. They don’t guarantee very accurate length cuts, but I bought a few pieces and one was just about the right thickness.

Like most people trying to mod this host, I could not get the tailcap off to do an optimal bypass mod. But I did bypass most of the spring that I could access with the tailcap still on, by working with the soldering iron down the length of the body tube. I then tried to measure the resistance of the body/tailspring combo, and got about 31 mOhms.

I piggybacked the FET driver in a similar fashion to RaceR86. Without the body/tailcap section, but with my 35 mOhm ammeter, I was getting around 8A with a freshly charged 30Q. Was hoping for a bit more. Not sure if there is a lot of resistance somewhere in the driver piggyback or wires or if these emitters have slightly higher forward voltages.

With a freshly charged Efest purple 4200 26650 in the flashlight, which has very similar internal resistance to the 30Q: a ceiling bounce comparison test revealed it was 3.7x brighter than the M2 I put together with XPL HI V2 3B at 2.9A. If the M2 has 625 lumens OTF, this triple K2 has 2300 lumens.

22,300 cd measured at 6.05m.

Edit: I measured the forward voltage of the emitters by powering the flashlight with my power supply, which displays the current, then measuring the voltage at the mcpcb. This confirmed that the forward voltage is the same as what djozz measured in his test of the XPL V6 2C. With a freshly charged 30Q, the voltage at the LEDs was 3.55V, which equates to ~3.2A per LED or 9.6A in total.

I made no pictures but I modded my Supfire F5 with dedomed XP-G2 S4 2B (one of my last good ones) and BLF-A6 driver. The switch was replaced with a small Omten, bypasses and tweaks were done for maximum current, with the driver floating above the 22mm stock-driver-made-into-contact-board I even heatsinked the 7135 to the edge of the pill.
On maximum output:

Flood: 810 lm
Spot: 204 lm
Throw: 102 kcd (at 30 seconds, 30Q battery almost full)

The throw is almost exact what was predicted from calculating the throw of my Brinyte B158 (with same led and direct driver, 322kcd) back to the smaller (25mm vs 45mm) lens of the F5.

It has become a good small alround flashlight with great throw for its size.

Today I gave new life to a very special flashlight: the Nitecore Extreme Infinity (The father of all SIPIK clones). This little light is special because it was the very first high quality LED light I ever bought and it has never failed me in any way, let’s say I trust this more than most other light in my collection. Back in 2008 it was one of the most highly praised lights for it’s excellent design and build quality, it’s been with me 8 years already and it was still going strong. It had flat regulation, infinitely variable brightness and hidden strobe, something you don’t easily find even in modern flashlights.

If you want to know more about it check this review: http://www.candlepowerforums.com/vb/showthread.php?198445-CPFReviews-com-NiteCore-Extreme-TM-Extreme-Closeup-Pics-Added

However 200lm was falling short for most EDC tasks, so I decided to give it a 2016 revamp:
-XR-E changed to XP-L V6 1A
-Stock driver replaced with a MTN-17DDm FET+1 w/A6 FW
-Filled the gaps on the pill, improved thermal transfer on the light engive
-Replaced all o-rings
-New tail switch and rubber boot to handle the high amps

Used masking tape for better grip to unscrew the brass pill

Stock driver used twisty action to set brightness, so it has 2 grounds

As you see above the shelf was fairly thin, so potted it with lots of solder.

OLD vs NEW, the switch has to be reverse to workwith the A6 FW

Copper tape used to maximize contact to the head, it actually works pretty well.

OLD vs NEW. I first tried an XP-L HI but it wouldn’t focus properly due to the low height, but XP-L has perfect focus.

A little beat up, but many years of EDC to come. :slight_smile:

Nice.

An old favourite of mine, the Nitecore EA4, now with Ledil cute optic housing 3 Nichia 219C LEDs and handmade 19x 36mm aluminium heatsink. I had previously installed the Tailcap Lockout some time ago.

Really nice output from those Nichia’s. :slight_smile:

Okay here is the ML8 build:

First I taped the gripping points on the light.

Then I placed in a vice and used a pipe wrench to remove the top. Be careful so as NOT to squeeze so hard you bend or break the case shell. a 12 inch pipe wrench with a light pull should loosen it. Also take note where the vice grabs.

cut the bottom part of a c8 pill off to act as spacer for 17mm driver

*** I couldnt get the pics to post here for what ever reason and Im not putting any more time into it. The following is a link to a story line on photobucket. http://s430.photobucket.com/user/dehc111/story

The product of this mod: (The second pic I think i got my finger in the way but it should give u an idea of what to expect.)

I hope all this posts okay....... ugg

what is the trick to posting pics?

https://budgetlightforum.com/t/-/15452

You used Google drive and that just sucks…
Try uploading it on a regular photo upload site like photobucket.

thanks. I tried that but used google drive share options. doesnt seem to work. Will try photobucket.

will34: what a great performed mod! I wish I was in the hobby back then, I love that Nitecore!

CRX: another very cool mod. And quite a chunk of alu in there!

That EA4 mod will have me looking over to the shelf where mine resides. I’m assuming you left the driver as is. Definitely need aluminum for that heatsink, copper would weigh a ton.

Yeah, the aluminium balances out the four eneloops in the back a lot better. All i did to the driver was replace the LED wires.

Way back in post #592, KawiBoy1428 used this stuff: "Alum Fast Stick" for thermal potting

This looks really good for lots of applications, like fixing up pill-less budget lights, specially if you replace or build a shelf but need to add thermal mass, and get a good thermal connection to the body. I just ordered it on Amazon Prime.

KawiBoy1428 - can you or anyone advise a bit more on this stuff? It looks pretty good, better thermally than JB Weld I would think?

Never used JB weld on a flashlight. This works up like any 2 part putty epoxy, kind of thick and heavy. Machines really nice once fully cured. Make sure your surface (s) are roughed up and clean Transfer’s heat in the S70 rapidly, warm in about a minute or less and LUX is way more stable, not rapidly dropping like it was before, even after fixing the mcpcb shelf. I think your going to like it Tom! I purchased 2 more sticks of it. :wink: