Oh yeah, I forgot to mention those screw sizes were for the original Thorfire Q8. But they should be the same for the Sofirn Q8. I added an edit to the post above to reflect this.
I wrote ‘standard Ø2.5*4mm screws’ which means that the lenght of the thread is 4mm. A bit short IMHO. But then again: I come from the world of powerplants. Everything under M6 is focussing on not shearing off bolts.
Don’t worry, the inner threads in the body stretch far enough for a few extra mm.
I really like this Sofirn Q8. Nice pure white beam, no ugly tint shift. Shot taken with my Galaxy S9 camera. Pitch black outside, no street lights, no moon.
If I remember well, he is using an ULcp AR lens, which is more efficient that the stock one, along with BeCu springs bypassed, and a pure copper plate holding the springs in place.
I think he also replaced the FET with a slightly lower resistance one(not too sure though), and swapped the 18AWG power wires for 16AWG.
I looked through all his posts in the modding thread. The lens and copper spring disc didn’t do much. The spring bypass was about 1200. Brass screws about 300. These got it up to about 7000. I didn’t see a number broken out for the mcpcb wires.
The other mods he’s mentioned were XP-L2 emitters on Sinkpads and A20DP FET. That’s the parts, and there’s also the mods to the head.
Just contacted Sofirn through PM and bought another Q8 with a discount code. Code was for Amazon (US) and it was a few cents less than the group buy price.
Had the Sofirn Q8 in my truck for 2 weeks. More than a few turbo blasts, and general use, batteries are reading 4.02 across the board. 1st cool white light I’ve bought in recent memory, no regrets.