Hi guys!
tatasal requested me to modify his Niwalker Vostro BK-FA01 and his package arrived 3 days ago:
Yes its a Vostro BK-FA01 together with an Olight SR52 Intimidator. The SR52 is his Christmas Gift to me. Never in my wildest dreams did I expect to receive an Olight. Much more an Intimidator. Thank you very much tatasal!
Back to the topic. :bigsmile:
I immediately compared it with my big single emitter throwers - a modified (dedomed and resistor blob) SupBeam K40 and a modified (resistor blob only) Courui D01.
The K40 is at the left, the Vostro at the center and the D01 at the right. The hot spot of the Vostro is smaller than that of the dedomed K40 but its corona is messing with the beam shot.
The next thing I did was get the lux readings at eleven meters and here are the results:
Flashlight | lux at 11 meters | computed cd | computed throw |
Courui D01 XM-L2 | 973 | 117,733 | 686 meters |
SupBeam K40 dedomed XM-L2 U2 1A | 1508 | 182,468 | 854 meters |
Niwalker Vostro BK-FA01 XM-L2 | 840 | 101,640 | 638 meters |
Time to open the light.
The LED looks like an old XM-L because of its green dye.
A closer look at the LED revels that its an XM-L2. Its 32 mm MCPCB is also made of copper and has direct thermal path - very similar with that of my K40.
Its reflector is huge - wider and much deeper than that of a Courui D01 at the right.
The center spring of its driver already has copper wire added. I think its AWG 26 and not silicon coated and its gonna be replaced.
Here’s a close up of the driver. Its sense resistors (3x R200?) already has two 221 resistors piggybacked. I would leave this as is and change the lead wires which are AWG 26.
So lets do the mod!
The lead wires were changed to AWG 22 silicone coated wires.
And the center spring wire changed to AWG 22 silicone coated wire.
The XM-L2 was of course dedomed (gasoline soaking).
So that’s it! The light was assembled and the mod was done. As simple as that! Time to test it.
Here’s the beam shot comparing the dedomed BK-FA01 (left) and my dedomed K40 (right) at 1.5 meters in their moonlight (level 1) mode. The Vostro’s beam is more intense.
And here’s their beam shots at level 2. I had to set the exposure of my Samsung Galaxy camera to negative 2 because of the corona of the Vostro messing up.
And here’s their beam shots at high. Despite the negative 2 exposure settings, the Vostro’s corona is still messing up the shot.
The readings at 11 meters were then taken and here’s the result compared to my dedomed and solder blobbed K40:
Flashlight | lus at 11 meters | computed cd | computed throw |
SupBeam K40 dedomed XM-L2 U2 1A | 1508 | 182,468 | 854 meters |
Niwalker Vostro BK-FA01 dedomed XM-L2 | 1845 | 223,245 | 945 meters |
So that’s it folks! I’ll try to get the outdoor beam shots tonight. Probably at 680 meters distance.