The There Are No Stupid Questions Thread

Which of the two Sofirn C8F’s is better: the one with LH351D LED 90CRI. Or, the one with CREE XPL LED.

They both have around 5000k - 5500K tint, so that part is a wash.

It is strange that the optics fell out with the bezel still screwed on. Either the glass has broken or it was too small.

Did you loose the glass and optics? You would need this optic: FW3A optic

Also you would need a 22mm glass lens, don’t know if Neal has them. By the way, Neal is on holiday due to Cinese New Year until February so he won’t reply.

The XPL C8F is more like 5500K. I would recommend you the new C8F with LH351D leds as it has 90CRI and is maybe slightly warmer. It may throw a little less than the XPL.

I’ve been using an Astrolux EC01 as a bike headlight for a couple of weeks. I wanted to get an estimate for how long I could use it in bike strobe mode, so I did a couple of single commutes (around 90 minutes), and then checked to see how much juice my Lii 500 said it took to top off my 50E. I had a hard time believing those numbers, so I rode a little longer between recharges (3.35 hours) and according to my charger it took 1590 mah to charge it back up (I think the cell was down to 3.8v).

According to my calculations, that means bike strobe mode is only drawing about 474 ma. It’s so much brighter and bigger (beam) than my TK15S, that I find that really hard to believe. Is it possible the XHP50 and driver are really that efficient, or is there a flaw in my calculations or methodology? That’s right in line with the shorter tests, but I didn’t write those down, so I don’t have any numbers to include.

You should get 200 or 250 lumens with that current. At lower currents the XHP50 is quite efficient as it has a quad die which behaves like four seperate leds.

I guess the blinking of the bike strobe doesn’t take much more current as it is rather short. With your vision adapted to darkness 200 lumens can be pretty bright.

Thought I’d share a little tip… don’t know how many people here are aware of it. But it’s nice to know.

One NetFlix account allows 5 devices. And they can be in different locations. There is no mandate that the devices be owned by one person. Their own site language mentions “family.” But even if you let a friend use it, there’s no way for NetFlix to check (of course, you have to trust that they won’t lend out your account to anyone else!).

So if you have a family member with a NetFlix account and you’d like to also enjoy it, ask them to share.

I discovered that this worked because while I’ve cut the cord, I wanted to have Internet access to content. When my mother upgraded to a smart TV, I inherited her old Roku. It still had her NetFlix account info stored. So I could watch NetFlix with no problem! She wasn’t getting any extra billing while both devices were simultaneously active. I was a little worried I was doing something illegal and didn’t want her to be hit with extra charges suddenly, so I looked it up and found out this great news.

This is pretty common knowledge and folks have been doing it for years. Technically, they would be able tell you are doing this since it’s pretty easy to see what location you are logging on from via your IP address (unless you are using a VPN). However, I’ve never heard of anyone getting shut down and I don’t think they actively pursue people who share accounts.

Just so you are aware, it is technically against their terms of use to share an account outside of a single household.

“The Netflix service and any content viewed through our service are for your personal and non-commercial use only and may not be shared with individuals beyond your household.”
https://help.netflix.com/legal/termsofuse

What is muffle mode , I’ve tried search but I see a lot of lights have juggle. Ode but can’t find out what it is , and I’ve got flu

If you are referring to “muggle” mode, it greatly simplifies the UI and limits max output in case you need to hand your light to a non-flashaholic.

The term “muggle” is borrowed from the Harry Potter franchise and it refers to non-magic folk. In this case, non-flashaholics.

There’s no good reason to announce that it’s “common knowledge.” I didn’t know about it. A couple friends of mine didn’t know. I assumed that there might be other people here who don’t know about it. So that’s why I shared. In case someone else didn’t know. That’s called sharing useful knowledge in the hopes someone else gets something out of it. Do people tend to do that in your neck of the woods?

And by the way “household” is a loose term. If you have multiple homes, you don’t require multiple NetFlix accounts. You leverage the same account. A family member residing in a different home can still use that account, as long as not more than 5 devices are shown streaming from it.

I wasn’t trying to be derogatory; no need to get defensive. The point I was trying to make is that the majority of users do know about this and in fact take advantage of it. There was a big scare a couple years ago when some information was leaked leading people to believe Netflix may be cracking down. They were not, but it brought the issue to public attention.

You could probably get away with sharing an account between family members but sharing with friends in different geographic locations is almost certainly a violation of their terms. I won’t tell you what to do, just wanted you to be aware. That’s called sharing useful knowledge, as you said.

I don’t even have Netflix or Hulu or any of those, but yeah, even I knew that.

Same with Amazon Prime. Probably all streaming services.

Yes, I have heard this as well, but guys… don’t forget the title of the thread.

OK, fair enough. Sometimes it’s hard to catch tone from text communication on boards like this. Thanks for the additional background on it.

No worries; I probably should have worded it differently. :beer:

Is there a list of flashlight manufacturers by country available ?
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Also, are there any flashlights that have actual lumen output measured as advertised that can be purchased publicly ??
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:stuck_out_tongue:

Are you asking about companies or manufacturers? Almost all manufacturers are in China. So that’s pretty simple.

There are some flashlight companies headquartered outside of china, but their lights are still manufactured in China.

The only lights I know actually made outside of China are small specialty makers who do very low production and charge extremely high prices.

I don’t know of any list.

There are lots of lights that are accurately rated lumen wise. This is on a model by model basis, though. The best thing to do is not trust ratings. If there’s a model light that you like, read reviews and see what the actual specs are.

And then add a fat margin because our measuring devices are more inaccurate than we like (but give at least a ballpark indication which is not always the case with manufacturer specs)

I dont really think that. Measuring amp draws plus using a lumen tube or sphere calibrated with a Maukka light gives a pretty good lumen reading. Lumens are still pretty hard to measure, though.

Things like lux are much easier, so reviewers can give pretty accurate throw numbers.

The main thing is don’t get hung up on specs and numbers.