BLF Kronos X6/X5 GB - Group Buy now closed.

I was curious about the galling issue, not because I’m worried about my lights per se, more that I just like to know stuff.

Here’s an article I thought seemed pretty informative about the causes and some solutions.

http://www.estainlesssteel.com/gallingofstainless.html

They mention molybdenum, graphite, mica and talc, but it seems that the focus is on fasteners that are installed and left in place, considering that they also talk about reducing rpm during installation. I doubt anyone is installing their tailcap at three thousand rpm :stuck_out_tongue:

I need to read the rest of it but I thought it might be helpful.

Yeah, humans have a physiological reaction to blue light. Special cells in the eye (ipRGCs, intrinsically photosensitive retinal ganglion cells) respond to sky-blue light and signal the brain to produce serotonin and suppress melatonin. This means that, when people see sunlight or other light sources with the relevant frequencies, they will generally feel more awake. Then when it’s dark, the brain makes more melatonin and less serotonin, which makes people feel sleepy after a few hours according to their individual phase response curve.

Some people don’t have this reaction, about 3 out of 10,000 people according to the studies I’ve seen… and out of those 3, statistically, 2 are legally blind.

I’m that oddball 1-in-10,000 case who lacks this reaction but yet can still see… so I can’t really use light as a way to regulate my circadian rhythms.

Anyway, I think the blue tailcaps are cool. I just want to tone it down a bit to extend standby time and make it a bit less eye-catching in public.

Received my #110 set today

-Box came in perfect conditions
-Lights are heavy and have a premium feel
-Fit and finish are far from perfect but on par with other lights this price.
-Both LEDs are uncentered, will adjust this later.
-Clicky feels solid
-In the X5, copper heatsink is noticeably a different color than the rest of the body.
-A couple small details in the exterior of both lights, not big deal
-Clip for X6 is not enough to hold such a heavy light

Will report with readings when I get home.

It’s this last part I can’t do with my Al X6. It goes fine with SS/Cu X6 and X5 and the Al X5, but on the Al X6 it’s impossible to remove the “shiny” thing. (reflector right?) It will not screw any way, will not move at all.
So this light has the yellow spot in the center of the beam, that’s is annoying, and a reflector that will not move at all.

Time to contact Neal?

Awesome, thanks for testing that!

I’m not even sure how to test the capacity of a capacitor…

Time to place your lights up for sale! Somebody will most certainly want them and appreciate them just as they are.

All I can say, is that this may be the best group buy light out there and they are perfect! LEDs centered, no nicks in the finish, everything works as it should!

Thanks guys and gals for putting this together, much appreciated!

Matt

Your problems are beginning to excite my esophageal ganglion.

Btw, I sleep fine bathed in blue light and a haze of various frequencies in the non visual spectrum.

I made a joke to a friend the other day about the possibility of weaving protective coated copper thread into clothing fabric to create a Faraday cage, albeit an incomplete one. Lol.

A nearly-imperceptible yellow spot in the beam? I’d personally skip Neal and just sue the postal service for delivering such garbage!

In case this makes anything more clear…

Science doesn’t give us answers. It just gives us a progression of theories which are less wrong than what we thought before. So… it’s not really about being right. It’s about being less wrong.

About eggs/coffee/whatever being good/bad for you, that’s just the media trying to make big headlines out of every tiny little thing. Some scientist lays down another cobblestone on the road to the future, and the media proclaims “This is it! We’re finally there!”

Hi Kenneth,
Since earlier in this thread I took offense as some of the things you had written, I thought the way you stated the problem with the reflector was much less offensive and more in line with other people’s posts of seeking assistance. That is why I took the photos to try and help. Sadly, I am at a loss of giving you direction from here. All of my lights easily come apart and can have the focus adjusted in seconds. I do not have the knowledge base to advise regarding possible penetrating oils that would be appropriate to use.(I have a vise with rubber padding I use for really stubborn items). I do wish you luck.
Ed

It sounds like you already fixed this, but … yeah, you can unscrew the reflector and MCPCB, adjust the centering, then screw everything back down. You might also want to adjust the depth of the reflector, to fine-tune the beam. On my aluminum X6, the beam was nicer (and measured as more intense) after I inserted a very thin spacer. My steel X6 was pretty much optimal without any changes though. So, your mileage may vary, but it may be worth attempting to fine-tune the focus yourself.

Just to report , my SS/Cu X6/X5 set showed up today. All serial numbers match (235 of 400) The box in perfect condition no nicks or dings anywhere. The X5 had ridden up out of its spot but no damage suffered to either light that I can see from that. There is one small ding on the X5 but you almost have to have a magnifying glass to find it. Emitters well centered on both ,beam, looks good on both, no fogging of lenses or reflectors anywhere and not stuck in any modes that I can find.

I would say overall, my set got to me in as near perfect condition as any light or set would arrive to your door from any destination of the world.

Great job Krono, bugsy36, Johnnymac, Dale, Toykeeper and if I missed anyone thank you too. Love the lights and thankful to be able to be one of the lucky ones to have gotten in on this GB, Keep up the good work and kudos to you all.

Any volunteers? Anyone want to make a BLF Kronos X6/X5 troubleshooting thread / FAQ? :slight_smile:

Normally a yellow spot in the center of the beam means that the LED is too far up the reflector and needs to be lowered, or in this case the reflector has to be raised a tiny bit, less than 1mm. It happened to me in several mods and using a XP sized clear plastic insulator solves the problem. Richard has them.

I like the blue but will probably double them up and reduce the current to make them dimmer but even.

The XP-L HI has much more even tint distribution than a domed emitter, but it’s not 100% perfectly distributed. It still leaks more yellow out to the sides than it does to the front. So, it’s pretty much guaranteed that the hotspot will be a bit more yellow than the rest of the beam. Not as much as with older emitters, usually, but the effect is still somewhat visible.

To reduce it, you will probably need to fine-tune the focus yourself — both centering and depth. IIRC, this process was already discussed within the last 50 posts or so, if you’d like more information.

I’ve had distinct spots in the beam even from premium brands like Zebralight. One nice thing about these BLF lights is that we can open it up and fix it.

Again, what have I done to you to deserve so many negative comments?
The SS/Cu set was super, ok, some dent corners on the box, and some scratches on the Cu light. But nothing big. I’m really happy, love the tail light, and the only thing I’m sorry for is that I will not use them, just have them in the box.

Therefor I have ordered 3 Al sets. At least one for my self. And the first that come here, has a really yellow spot right in the center of the beam, you can’t miss it. This is not normal, my other three lights have not the yellow spot.
Then, trying to fix it, the reflector? is stuck, no way to get it open. Is this normal?

Would you say that this light is 100% and what I paid for? I can not center the led, I can not open the reflector, I have a yellow spot in the beam.
Others with the same issue?

Don’t blame me for getting a light that don’t meet the standard the lights from this GB should have. But you of course think, it’s just Kenneth, he can live with the damaged light, no biggie. Good I have two more Al sets coming, hope they are OK, and then I can put this Al X6 in a drawer and forget about it. Good that I live in Norway so I have lots of money to spend on this.

And really nice to have a so supportive team member that supports the GB customers that you bugsy36. I can not fix this light, so I have to live with it. Would you have paid $50 for something broken that you could not fix?

Thank for the effort and help. You are better then many others here. I’m really a hated person on this forum.

I have nothing against you or anyone but honestly you have build up a reputation where most of the things you order don’t work as they should and can’t be fixed by yourself, which is… Uncommon?