UltraFire SRK - 2017 new generation

Wut? $20? Where did you get it for that price? That's a great price for this light. at DX, they are close to double that.

Thanks for the info! This is interesting. I thought this light caught on with a small group, just couldn't find the posts/threads. If you have or find any photos of the earlier or later versions, please post in this thread.

So sounds like so far:

  • they downgraded the model/design by removing the shelf, thinned the contact plate, poorer thread design, though I thought my unit has pretty good quality threads, as shown in the OP picture
  • LED's can be anything, whether it bares the UltraFire name or not, but mine bought from UltraFire.com is listed as CREE LED's and does appear to be CREE LED's

Isn’t a big issue that there is “Ultrafire” the brand that makes not too bad flashlights and the name just being slapped on anything thus can be any quality, usually poor?

The use/abuse of the UltraFire name has been going on a long time. Couple years ago UltraFire tried some legal action, maybe a notice sent out to retailers to stop selling UltraFire clones. Banggood did the right thing and pulled all their UltraFire branded items, but many either ignored it or didnt' receive it.

The UltraFire site used to have a posting about the problem, but I can't find it anymore.

http://www.ultrafire.net/index.asp

Dated, maybe last updated 2013. Products seem old, no pricing, descriptions or ordering. They seem to be called: Wha Fat Technological Co., Ltd.

http://www.ultrafire.com/

Much more current, has pricing, descriptions and accepts orders - this is where I ordered my 6X from. Still has broken links, links that don't takes you where you expect, but they do respond to service/ordering messages. Patents are list on "Contact us" page.

The sites list different addresses, different numbers, etc. Seem totally unrelated, but who knows.

I got it at that price during the 3/29 Ali sale. The have several SRK variants and some other lights I haven't seen show up here on BLF yet. Right now the lowest price one of the types you discuss in the OP they have is the 8-emitter version for $21.74 (after $1 for $15 purchase coupon):

https://www.aliexpress.com/store/product/Supwildfire-20000LM-8-x-XM-L-T6-LED-Power-Mode-Digital-Display-Flashlight/2787097_32799143787.html?spm=2114.12010612.0.0.QVBioJ

EDIT: It might be $20.74 because I think they have some auto discounts that show up when you check out ($1 for $15, $7 for $100, etc).

Any idea what size the connection is for that charge port?

It’s nice that the charge port connects directly to BAT+ / BAT-, because then you can use whatever charger you like. It may be odd for a flashlight, but that’s how these things are done in the swordlight industry:

5.5×2.1mm?

I've got a dozen or so different "real" ultrafire lights and they are usually a big step up in quality over the fakes.

Bummer this light didn't come with a real pill. It seems most of them don't anymore. Lately I've been putting in a copper pill for them not threaded or anything just put in place with thermal epoxy. I buy the blanks from metals direct then just polish them with a circular sander until they are nice a smooth for the noctigons. I've got extra blanks around from last time I bought them, they are a little bigger though, and might not work for you. If you think they will work and want one let me know. Just pay shipping and I'll send one out. I've still got a copper threaded pill that Bucket gave me and these work just as well as far as I can tell. Either one will transfer heat to the light so fast that it will burn your hands pretty quick on turbo.

This 9x has a copper pill made from a direct metals' blank, it's got a BLF driver in it. With high amp LG's you can't hold on to if for long on turbo.

Ok here are some minor things.

  • Neither UF-4, UF-7, or UF-9 that I have has a shelf. According to info from Mitko b-h got, these had shelves in them…… when Mitko last purchased some. +< EDIT+: What Mitko said was mis-understood… they NEVER had shelves
    .
  • UF-4 & UF-7 has screw securing reflector to MCPBC. UF-9 does not.
  • UF-4 has driver with raised Batt + . UF-7 & UF-9 have nothing raised at all. :frowning:
    .
  • To me the threads on UF-4 are smoother than UF-7 or UF-9
  • Driver ring on UF-4 much, much easier to reinstall than UF-7 or UF-9
    .
  • UF-4 came from FastTech…. thanks b-h
  • UF-7 & UF-9 came straight from UltraFire
    .
  • UF-4 has a washer under the driver
  • UF-7 had nothing under the driver
  • UF-9 had the small piece of wire somewhere under the driver or retaining ring. It was not reinstalled.

UF-4 ….Washer under driver
.

.
.
UF-4…… Reflector retaining screw
.

.
.
UF-4……. Driver raised Batt ring+
.

.
.
UF-7 & UF-9 Driver with nothing raised at Batt ring+
.

.
.
UF-9…… Small wire mentioned above is in this picture
.

————————
.
Edit…. I think I remember the driver board being a bit thinner on the 7 & 9. b-h… if you take your 7 & 4 apart measure the driver board of each please…. I forgot to do it. :wink:
Maybe you’ll have yours real soon. According to tracking it is about 20 miles or less from your doorstep. :smiley:

One of my favorite ” user” MT-G2 flashlights is an original Ultrafire M-51. Its quality built and with a fit & finish on par with top name brand lights. Sadly over the years the Ultrafire name got trashed by all the junk clones and copies.

Looking at your picture teacher with the wire in it I’d say it could be a piece of swarf from machining, that is if its aluminium.

That is what I was kinda thinking too…. except for the fact that it is perfectly round and the ends are square cut. ?? That is what makes me wonder?? :slight_smile:

Sorry, missed these postings. 18sixfifty - real good to see you back around! Haven't seen you post much. That 9X mod sure looks sic!! I'd do something like that. Figure 8-10K lumens?

teacher - weird that I got a different/better ring setup in the 6X bought recently then what you got in the 7X and 9X. Odds are bad, evens are good I guess...

I've made mine own up with a brass ring, reflow them to the PCB driver - did this on the 16X light with a HQ OSHPark board:

Thanks Tom, nice to be back around. It’s been a while. Yeah that light’s a beast and 8 to 10 is about right depending on the batteries of course. I just sold it but I have more. LOL I tend to run it with standard amp good quality batteries because the high amp ones are just overkill. Fun to see what it can do but for actually using it daily, the regular batteries are probably better.

I also run a zenor mod on these because I have fried drivers before with high amp batteries when I didn’t. In fact I tend to use the zenor on all my multi-emitter lights, whether I’m using batteries in series or parallel. Maybe I don’t need to but it’s not much more money and I’m more comfortable knowing it’s in there. I usually pot the driver as well once it’s all set and running the way I want. Those low resistance FETS hate getting too hot, I bet I’ve killed two dozen of them. Half of those I’ve killed just soldering wires and springs on them. I’ve learned to be careful and give them time to cool down before I solder on the next wire or spring.

That's interesting. The SIR800DP and SIR404DP take the amps really really well - no heat issues at all. I've used probably a couple dozen of the 800's without a hitch. I got a couple Infineon FET's in I didn't even try yet, and it might do even better than the 404. What FET's are you using? Also, do you use the zener with an e-switch driver? If so, the parasitic drain is quite high. I got my e-switch lights (Attiny85/Narsil w/smooth ramping) running with a parasitic drain of like 0.023 mA (23 uA), which will literally last for like 20+ years in a SRK.

https://www.digikey.com/product-detail/en/nexperia-usa-inc/PSMN2R0-30YLDX/1727-2218-1-ND/5285448

I think this is the FET I put in this light but I’m not 100% positive. And yep, the parasitic drain is pretty high. This light locks out with just a half a turn so at least that part is easy, so long as I remember to do it. I’ll have to check out the Attiny85/Narsil and see how that’s done for my next build. I’ve got a big old wonking 18x plunger light with a side switch that takes 5x32650’s but no tailcap switch at all. It would be great to have a driver in it with less parasitic drain. I’m actually only running 15 emitters on it (5s3p), but talk about a lumen monster.

That's the FET Richard sells, and the FET we are going to use in the BLF Q8.

I got this light: http://www.gearbest.com/led-flashlights/pp_227307.html converted to 16 XHP50's. Measured 37.5K lumens. Same thing - e-switch, no tail switch. It's a FET+1, but the 7135 doesn't handle the load well - 1st one died, 2nd one survived but is not working reliably. I'll be modding Narsil to support just one channel - the FET, than the issues should go away. I'm using the SIR404DP FET in that one.

Custom aluminum plate made for this light:

Custom tool to open the head:

It's not ideal for modding - driver must be accessed from the top, not secured from the bottom, therefore the shelf must be removable, and it's a nasty flat bottom reflector...

All 46 pics here: http://s1054.photobucket.com/user/TomE2012/library/Custom%20Mods/16X%20S88%20clone

Thanks for the review Tom! I was eyeing one of these out wondering how they are inside.

I think some of these lights are being made by Solarstorm the design looks like there’s.

Holy Smokes! That’s awesome.

For that beast, much rather have 2S4P then 2S3P, and would love 8 20700A SANYO cells for it, but they are bout impossible to find right now, then also a custom built battery tube handle would have to be made. The VTC5A cell is the 2nd best, but lower capacity, after that, maybe the VTC6 cell.

I had noticed that Tom and forgot to mention it. The ring setup on your ‘6’ looks just like the one on my ‘4’.
.
Driver raised Batt ring+

  • My UF-4 pic on left ……. Tom E’s UF-6 pic on right
    .

    ———-
    ————-

Now THAT…… is a ring!! :+1: