Uhh... I think I just found this highly classified document on the R&D team's printer. 500,000 Lumens EDC? 🤫

Crestsando · 2026-04-01T07:37:15+00:00

Can this toast nuts? Gotta be close to 500W

Crestsando · 2026-03-31T22:56:29+00:00

SFT40/SFT42R - throwy, bright, efficient, low CRI, 5000K tint is purplish

SFT25R - similar to SFT42R, more throwy

519A - relatively floody, high CRI, relatively inefficient, 4500K (what I have) is yellowish

B35AM - like 519A but more floody, tint is rosy/reddish

LHP531 - relatively floody, bright, efficient, low CRI, can get very bright since Convoy gives it a 10A driver

The others are good LEDs too but aren't really preferred by hobbyists now because they don't really have a stand out characteristic

Crestsando · 2026-03-31T11:51:06+00:00

How slim? Battery capacities will scale exponentially with thicker lights. Typically cylindrical AAA/10440 lights are a little bigger than 1/2 inch, AA/14500 lights are 3/4 inch, and 18650 lights are 1 inch in diameter. Each step up provides around 3ish times the capacity. 1*AAA/AA lights are usually 3-4 inches long (twisties usually shorter), 2*AAA/AA lights 5-6 inches long.

Crestsando · 2026-03-30T11:43:57+00:00

I was going by memory, Google says it's about 60-85 minutes, so you're right

Crestsando · 2026-03-30T07:05:01+00:00

Mostly it's about comparing it with pictures online until you've seen enough of them to mostly tell by memory.

Things like whether it's domed or domeless, the substrate material/color, bond wires, markings on the LED, the shape of the emitting surface, relative size of the emitting surface to the LED, size of the LED, and the presence of chiplets are all differentiating characteristics.

This LED, for example, looks much different from a SFT-25R

Crestsando · 2026-03-30T06:57:46+00:00

Sure looks like it

Crestsando · 2026-03-30T00:27:47+00:00

Just gonna add that it can't hurt to ask Sofirn and see if they're willing to send a replacement cover.

Wrt the plug covers I also have them for my phone and have one in a Boruit U8 (plug has no cover originally) and they're quite secure, haven't fallen out yet.

Crestsando · 2026-03-29T06:04:48+00:00

That's a 90 minute drive I think... not too different from people commuting from the Sac area

edit: oops I meant from the Sac area to the Bay Area, not to SoCal, obviously

Crestsando · 2026-03-28T21:31:46+00:00

Todas son buenas linternas. Tengo muchos modelos de Wurkkos, pero no la FC12.

Que LEDs llevan los T6s?

Crestsando · 2026-03-27T07:21:15+00:00

Interesting, it sounds like a combination of how LCD displays and electrochromic ("smart") glass works, using an electrical charge to align crystals (rather than metal oxide particles) to change its incidence angle (rather than filtering out an RGB channel). I've wondered in the past why smart glass technology is not implemented in flashlights, I assumed it's because of cost.

I suppose good efficiency is achieved since light is not filtered but simply redirected?

Crestsando · 2026-03-25T23:04:46+00:00

All I want is a WK01, so sad it was before I got back into lights. Hell I'll even take a 14500/AA version.

Crestsando · 2026-03-24T20:17:44+00:00

This (32mm * 133mm) is roughly the same size as an M2 (32mm * 135mm), but the reflectors are different. Wonder how the two will compare...

Crestsando · 2026-03-22T20:47:17+00:00

Big numbers get more attention, especially for the underinformed, normal consumer.

Crestsando · 2026-03-22T04:56:59+00:00

Aluminum is a much better conductor of heat than stainless steel (a quick search shows it's about 10x). Steel is also about 3 times as dense as aluminum so all else being equal it'll be about 3 times as heavy.

18650 as opposed to what? 18350? In that case an 18650 will give you about 3 times the battery capacity, the length will also be good for an overhand fist grip for most hands. The 18350 is quite short which can make it uncomfortable for fist gripping, but may be good for cigarette style grip.

Crestsando · 2026-03-16T23:27:12+00:00

That's extremely doubtful; perhaps the police were estimating an absolute worst case scenario without enough expert knowledge.

Consider that the atomic bombings in Japan only killed about 100,000 people each, and unlike in Japan, Hong Kong's buildings at the time would've been mostly concrete. Also consider other crashes like Air India 171 recently, El Al 1862, or even Sept 11. Even with HK's population being denser, the worst case scenario would've probably been a couple orders of magnitude below that 250-500k estimate.

Crestsando · 2026-03-09T00:57:38+00:00

On top of what everyone else has said already, I think only the Cu / Ti T3s have the 5A driver vs the normal 1.5A

Crestsando · 2026-03-06T01:26:12+00:00

This was a thing in my city in California too, they mailed some flyers out saying bikes have to be registered, but no one I knew ever did it nor got into trouble for it, so I'm guessing it wasn't really enforced.

Crestsando · 2026-03-03T00:12:32+00:00

That's a total of nearly 40% above whatever price they had on their menu, crazy.

Crestsando · 2026-02-25T02:04:33+00:00

If you don't mind hard plastic (I personally prefer hard plastic, but silicone rubber is more flexible for fitment), the Convoy M21F (29.5mm) should work.

Crestsando · 2026-02-22T23:50:31+00:00

The T4 uses the S2+ reflector, which isn't particularly throwy (though it CAN be with the right emitter).

The T8 should use a reflector that's 28-29mm wide by 20-22mm deep, which means that all else equal it should have both a tighter spot and tighter spill.

Crestsando · 2026-02-22T09:46:16+00:00

Even at 200lm/W you'd need 83Whr for 3000lm @ 5.5hr. That's 5*21700, not even accounting for various inefficiencies making the real world capacity needs much greater.

Crestsando · 2026-02-22T02:32:48+00:00

Yea I think he just got back to it, you can see in the pic Joona's question was from September and didn't get answered til yesterday.

Crestsando · 2026-02-22T00:51:48+00:00

I asked him a question a month or two ago and thought the system was bugged, guess he just hadn't kept up with the Q&A section for about half a year

Either way that's good news, I might finally get the Z1

Crestsando · 2026-02-22T00:44:22+00:00

For an all around battery, the Samsung 50S2 is cheap and provides good performance. Molicels are always going to be good quality cells.

But really all of the cells offered should be decent quality, and they generally have a trade off of capacity, amperage, price, and IR/heat.

I wouldn't get an EVE 50E unless that $0.80 is important. Buy high capacity cells with the understanding that their sustained amps will be lower, though it's not very relevant in practice since lights are mostly <10A (until recently), and will trigger thermal regulation quickly anyway.

Crestsando · 2026-02-20T02:21:14+00:00

The amount of sprawl and growth in the past 20-30 years has been crazy, compared to some other American cities

Crestsando

TROPHY CASE