I recently became intrigued with SFT40 possibilities after buying a MK38. Impressed with the output and throw, my curiosity started to grow with regards to the VN2 driver and what might be possible with cells like the H10 Vapcell. I asked Vinh to build the E05vn40 that I reported on before and since my lumen measurements have always been in te ballpark, I didn't have Vinh spec it. When I saw outputs as high as 2300L, I just assumed it was reading 6500K far too high however, I still I knew just by eye that it had to be a 1500+L light, regardless of a supposed false reading in the cool end of the spectrum. I was literally seeing at least twice the output from the PreonVN W2, with the naked eye.
After that I asked Vinh to build a D25Avn40 (SFT40) and measure the output. He saw 1800L at turn on (I don't know what cell he used). I didn't get throw readings from Vinh because he got distracted after seeing 1800L. My lowest reading with 3 different cells was 1960L but one cell gave a reading of 2240L. I put this same cell in the E05vn40 and saw the highest reading in that light as well, by about the same percentage. So, on the surface, we're seeing low readings of 1800L with SFT40, VN2 & H10 cell, which I think is utterly impressive for a 14500 light. Better yet, the average with all three cells was 2083L, (again, my light box). The light with cell only weighs 1.624oz making this a 1282L per oz light. For comparison, the PreonVN W2 is about 648L per oz. I'm sure this D25Avn40 is breaking all kinds of records for 14500 lights.
In any case, I'm happy and it's just really fun for me to see some of my suspicions about the combination, play out. I'm guessing that a twisty 14500 might even deliver slightly higher readings than the clicky.
Only 2mm longer than the Preon. The Preon is actually .5mm wider at the widest point, due to the pocket clip curve.
