If you have to unscrew the lens so far to get a focus, is it possible to machine some material off the pill to set the LED in deeper? or adjust the lens holding ring, and add a spacer to push the lens further out in the body?
What are the LED star and driver board sizes for these lamps?
where i can find this light with the 75 lens with good price ?
Direct from Shenzan Homesafety
$19.99USD is what I paid
try e-mailing Ruby, she dealt with my order.
ruby88@szhomesafety.com
Or search for them on alibaba.com
did they sent you only one flashlight ? and how much shipping you paid ?
I have a whole load of pictures of it and beam shots, but no info of where the head was set
But, my examples ( i have 3 of them) best, tightest, longest beam is not screwed all the way out.
Here is my server directory of all my various shots.
The other smaller lamp is a $200USD DereeLight NM800, NOT worth the extra money. Beam pattern is a bit better, but you pay 10 times the price.
If you went to my thread about these lamps, you will come to a post where many of those pictures have text explaining them
This one of the pictures from the directory.
is two identical UF-1508’s, wall is 6 ft away, one fully screwed in one first threads
Sorry , I missed this post
I paid $120 US Dollars,
this was for
Two x UF-1508’s with 75mm lenses $38.00
Two Extra red LED pills $8.60
Four Panasonic 18650 3400mAh batteries $29.60
Paypal fee of $5.00 USD
DHL express postage $38.80
Anything larger than 69 mm aspheric will need larger emitter or right precoolimator lenses.
Why is the difference between 69 and 75 mm so ctitical ?
Because in aspheric world bigger lens means smaller beam pattern. And I would not say it is critical. Play and enjoy 
Smaller beam pattern, perfect, exactly what I am looking for, laser like thin beam
Looks like minimum order is 20.
No…
I’ll quote my post, on this page about 4 or 5 posts up…I just bought two direct from China.
Well Djozz, if all those zomies are bothering you so much I’ll be glad to take some of your hands…… 
Grtz
Nico
Me and my big mouth
But actually, you are very welcome to take over one of my two UF1504’s (with emitter of choice)
Quick Mod on 1508 75mm:
- XHP35HI on16mm copper from Kaidomain
- 1 Mode Buck Driver from DX: http://www.dx.com/de/p/18v-5w-cree-circuit-board-for-flashlights-16-8mm-5-5mm-26110#.WO56sqKJI-U
- Modded with R100 instead of R200 for 2,5A, like wrote on Aqualab: LED Driver List - LED Drivers and Regulator Boards (database driven) (search for “TR-0021b”)
- At tailcap 2,33A
- with 4x 18350er Batteries
At 5m I have measured 372kcd, thats aproximately 1220m distance.
Propably next steps:
- soldering MCPCB to the pill
Nice,
I would like to see the monster when it will be done. Double extended tube probably?Edit: I just saw 18350 :person_facepalming: but even 4x18650 should be doable…
I’m getting one from the German forum (TLF) and will modd it with Oslon Black Flat and use the short tube with twe 18350IMR.
That is, I will ask Djozz for help with his mad modding skillz.
Aiming for pencil beam with around 900Kcd (will depend on lens quiality…)
Cheers
Nico
What driver are you going to use?
Probably BLF 17DD, but I will leave that up to Djozz.
We’ll have to check how many Amps will reach the led.
It should be close to, but not over 4,5A.
I’d rather be a bit on the safe side.
Cheers
Nico