On my 2nd SP36, the other night I tried the heavy gauge wire and pulling, as I did the 1st, but couldn't get it to budge this time. So, I removed the switch and hammered lightly on a pointy tool, like a thin ice pick, and it easily popped out. I knew though what part of the driver I'd be damaging, knew it was a safe area away from any components. It did get scratched up but no harm.
Re-programmed the NarsilM v1.2 with v1.3 and calibrated the voltage and temps so readings are now accurate.
Here are some measurements of the SP36 and SP36S that I bought during the 11/11/19 sale, taken with the Texas Ace lumen tube calibrated with Maukka lights:
Sofirn SP36 Turbo, 5172 lumens, 7103K, DUV –0.0142, CRI 74.9, R9 19.9, R12 51, Rf 64, Rg 102, Sony VTC6
Sofirn SP36 Turbo, 5094 lumens, Sanyo NCR18650GA
Sofirn SP36S Turbo, 4008 lumens, 5745K, DUV 0.0002, CRI 91.5, R9 54.9, R12 76.3, Rf 89, Rg101, Sony VTC6
What diameter is the driver for this light?
I would also be interested to know, and the reflector’s diameter as well.
Sofirn has the nasty habit of gluing everything, but from the inner threads, the driver would be 42.75mm.
The aperture is 40mm so give some 1 to 2 mm more for the reflector OD.
Thank you 
Yo Bro! :partying_face:
I’m sorry no, I do not usually do flashlight reviews. But some others on BLF do, so perhaps they can contact you.
Hi folks, I’ve shared my SP36 implementation adaption for bike/scooter lighting application here: eScootNow Stonker eScooter Headlight Series