What expectations for a 21700 flashlight with a deep reflector cup?

LED Flashlights – General Info
1

What kind of expectations do you have for a 21700 edition flashlight with a deep reflector? Recently we saw this design from a manufacturer, like it very much. A design for 21700 flashlight compatible with 18650 battery.


We have some preliminary ideas, maybe we can get more good suggestions here.
A long throwing distance is needed, about 700-800 meters or even more
XHP35 series or XHP50 series emitter will be considered
USB rechargeable type C (input and output)
The bezel will change materials to stainless steel
A little heavy now, 350g without battery installed,may do some improve
Remove the Tail switch, only side switch with power indicator
……

Circuit design
2-4 Groups hidden moonlight and strobe modes
Do not confirm still about Groups changed and output .
……
It may not be comprehensive now, we will gradually update it.

2

Put Narsil firmware and powerbank for cellphone, more crenellations on the bezel

3

thank you, will this need a Authorization

4

what light is this ?

5

XHP-35 with 2.5 amps to the led, or best option 3 volt driver for most other emitters XHP-50.2 - 3 volt, Luminus SST-40, Osram flat white 2x2 and I am hearing that Osram has a new emitter coming out soon. Make the tail switch optional order separately if wanted. And of course Narsal firmware. 1S battery

6

Looks like an Astrolux switch and tail.

7

I would also utilize the head to battery tube concept like the Amutorch VG10 and offer both size battery tubes 21700 and 26650. look at the last picture .here Keep the head size the same as the BLF GT Mini, I am running a poll on a similar concept with the BLF GT mini, maybe that will also give you some ideas. Who would buy a BLF GT mini with a 21700 or 26650 battery capability, along with SST-40 same size head.

8

Acebeam T27 but weaker.

9

This was the Sofirn AT35 prototype.

My suggestions for improving are the following:

- make the head at least 50 - 60 mm diameter

- add more, deeper and slightly thinner fins, this will also save weight

- use XHP50.2 3V or SST40 5000K led with good firmware

- keep the knurling, the side switch and the tail switch (optional without?)

  • be sure that the USB C rubber cover closes tight and is recessed a bit

What is the name of your brand and where will the new light be available to purchase?

10

Narsil firmware doesn’t need authorization to use it. But you should contact the owner, who is BLF member Tom E for details of what the license does require.

11

I disagree about the head size. Especially, if the 21700 and/or 26650 tube happens for the GT Mini, it would be good to have another light with a slightly larger head instead. :wink:

12

@DavidEF, using NarsilM is based on a license.

It’s a copyleft license, not a copyright one. That means anybody can use the source code, but has to contribute back based on law.

It’s a free, open-source UI.

That free part: free to use, but you HAVE to play fair.

13

Please use the Osram White Flats, which throws much farther than the XHP35 HI. In some cases twice as far. It will get a lot of sales just because of this emitter alone. It will be the first commercially available thrower with this emitter.

Can the fins get progressively deeper towards the button since the reflector is narrower at that point? That would maximize surface area for heat shedding.

I love the USB-C charge. :+1:

14

The only thing I might suggest is removing the “fins” from the tailcap to make it smooth (especially if there’s no tailswitch). Might also help if you’d want to epoxy a Nd magnet onto the tailcap.

15

Yeah, I know how the copyleft license works, but it’s too much to explain properly here, so I pointed back to the owner of said license for the firmware in question. He should be able to explain not only how the license works, but how and where to get the code, and where to link back to in order to fulfill the sharing requirement of the license. Alternatively, ToyKeeper can also help with those things, and probably is able to better explain how it works IRL than Tom E can, or any of us. :wink: