I have an S2+ recently bought from Shenzhen Convoy Electronics Co., Ltd. on AliExpress. It was slightly on when switched off. I took the switch out with considerable effort. It turns out that the ring holding it in has a left hand thread! Very strange and user unfriendly. I didn’t see the problem and didn’t take the switch apart, but the problem went away when I put it back together.
Aside from those two things, it seems perfect for what it is.
Well as I mentioned above, my first S2+ was 7135*3. The second was 7135*4. The red one I got was 7135*8. So I had a $2 credit from DX. And they just sent me a CC for another $2 because an order of 14500 batteries from back in Feb/Mar was screwed up. So that gave me $4 to spend. So seeing how I had a *3, *4 and *8….
I ordered a *6 in grey with $4 off so this will be the least expensive one so far. :bigsmile:
Just give me the usual 3-4 weeks till it arrives :bigsmile:
Actually they mentioned their slow/unreliable shipping in the CC email. They said they’re trying another carrier to improve reliable shipping. We’ll see……
I don’t think they increase throw, but just change the beam. The 10 degree TIR lens is $0.40 from LEDDNA. I really like that one in the S2+…beautiful defined large hotspot with a nice wide even spill.
Carclo is a well known type of “TIR”. Optics For LEDs | Tir led lenses It seems possible to dig out from there how high the optic device should be over the LED. They list where to buy. I don’t know (yet) if any will fit the Convoy.
They are not pure TIR. They are really combinations of reflection and refraction, like LED Lenser and Fresnel lighthouses. That is, there is a hollow over the LED with a lens over it to focus the light that comes up the tube. It should, theoretically improve the fraction of the light that goes into the spot, by focusing the spill as well as the reflected light. It probably should increase the throw, by reducing the dark ring around the LED that one seen looking into a reflector light in moonlight mode.
Not significantly no. Although I think you might see an improvement, I always think the DQG 18650 Tiny with it’s TIR throws a beam very well for it’s size and output.
But significant, no. Throw is about reflector size, and the S series lights are all small in diameter terms. LED size in relation to reflector size will be the main way to increase throw. So swapping in either an XP-G2 or XP-E2 will give you a much tighter hot spot and more throw, but less lumens overall.
Personally I like the XP-G2 in this size light, as you can still drive them at 2.8-3.0 amps without excessive heat issues. So it’ll still make a lot of lumens, but will easily out throw any XM-L2/-XP-L at the same current.
The XP-E2 you’d need a lower amp driver (probably under 2 amps). Much smaller hot spot, but also a lot less lumens. If you want the beam profile to be narrow, then this would work, but I think it would be less useful than the XP-G2.
Of course you could look at de-doming. This works for any emitter. And will increase throw, but can cause unwanted tint shifts.