I just upgraded an already modded "vintage" FandyFire/Solarstorm SP03. It's a triple SMO reflector, 85 mm head diam sitting on a quad battery tube, like an SRK's battery tube. It's running a BLF Q8 style driver (FET+1).
Upgraded it to triple SFT-40's - it had 6500K SST-40's, back when the 5000K's weren't available yet. The lumens stayed about the same, but the throw little more than doubled, once I got the LED's properly centered. With just one of the 3 LED's off center, after aligning it better the throw jumped by 13%. These SFT-40's seem very sensitive to centering - something to keep in mind if you don't think your FT03 SFT-40 is throwing as good as it should.
The #'s on triple SFT-40's:
- lumens: 7730 at start, 6180 at 30s (maukka calibrated)
- throw: 540 kcd, 1470 meters (it was 264 kcd w/SST-40's)
Stock, this light was 75 kcd, about 2200 lumens, back in the day, 8 years ago...