Ilmatic
September 1, 2017, 4:12pm
15
I just received my SC01, and a bit disappointed in the turbo lumens and throw.
I measured the modes as follows:
Mode Spec lumens Measured tail amps
low-low 20 48 0.10A
low 200 255 0.46A
med 500 615 1.28A
hi 1,000 1,074 2.69A
turbo 2,000 1,639 5.65A
Turbo throw: 60 kcd (measured at 5m), 490 meters
This light is a 40.1 mm diameter head, and reflector I.D. of 31.0 mm. An Eagle Eye or BLF X6 has an I.D. of 29.0 mm, so it’s a little bigger which is good, but puts it in about the same class.
I would say the lumens in turbo is about expected, compared to hi mode - the higher the amps, the lower the efficiency of amps to lumens. Also I think the 60 kcd is expected for a reflector of this size,and these amps drawn from a single cell with a XPH35 HI.
To get 92 kcd from mine, the lumens would have to be about 2,400, 50% better than what I’m getting. The optics in mine looks good: nice AR lens, reflector looks perfect, LED is aligned well and seems reflowed well. I can’t see anything wrong, but who knows…
For the low turbo lumens issue, going from hi to turbo and double the lumens, you have to more than double the drawn amps by quite a bit. 2.7A to 5.7A is not enough to double the lumens. It would need over 6A easy, maybe ~6.5A would get you close. You can see the delta from med to hi in amps vs. lumens, and at higher amps, the ratio of amps to lumens has to be even higher.
This I guess makes me feel a little better (i think), because just from purely looking at the difference when I would go from High to Turbo, it was very subtle, so it made me doubt that it was actually 2k lumens (dont have a light meter yet). When compared to the KDlitker, output seems to be almost identical. Again, this is me just looking at the output using my eyes so very subjective.