Outstanding and budget-friendly! Sort of ...
The Wildtrail D80-V2 has a flintrock-bistro driver that can be set to precisely the 6x7135 engaged. I did some measurements on the SBT-90.2 mod: 2.16A, 808 lumen. The led at 2.16A measures 2.76V. So when the battery at a current of 2.16A delivers 2.76V (ignoring resistances in the flashlight, at 2.16A the voltage drop will be very low) the flashlight efficiency is 136 lm/W. Really high. Unfortunately in the entire range from full to completely empty, a VTC6 at 2.16A has more voltage than that. i.e when full it runs at 4V, the efficiency is thus 94 lm/W, which is still pretty good. So at low currents the SBT-90 has good efficiency.
Host: 27
Led: 35
Board: 2
64 dollar , hmm, how budget is that? :person_facepalming:
This is really cool! What gauge wires are you using between the driver and the MCPCB?
I left the driver in place, these are the stock wires, I think 20 AWG. If the current had been low-ish that was a next job, but 19A on a full battery (prob. slightly lower with tail in place) was fine.
I’d say moderate budget. 
Like i said, sort of.
SBT, we all know it’s pricey but the host is where you can save money.
Not like faulty FT-02 2020 edition with failed driver, 44$ went to drain...
I put a MTN-BST3 Boost Driver and a XHP35 HI C4 40E 4000K CRI80+ emitter in a Convoy M21C.
Distance to the windmill just shy of 700 meters. Click beamshot image to embiggen
Looks very good khas! Did you get a good tint? And what is the current from the battery?
I recently got the L21A with XHP35, which is single cell as well.
On turbo i measured more than 9 Amps! according Convoy.AE it should do 2,3A to the LED
So it roughly makes an efficiency of around 75%
I bought some boost drivers from Convoy that are perhaps the same ones that are in your L21A, I used them for a GT40 led (also 12V) but at highest setting I get a pretty annoying whine. Does your L21A have a whine also?
I got lucky in the Kaidomain tint lottery this time. I have no way of measuring the CRI but I think is higher than 70.
It draws 9.68A on a Vapcell INR21700 fresh from the charger, not as impressive as your D80V2-SBT-90.2 :+1:
2 days ago I modded 2 lights and made my current EDC set!
On the Panda White Tool AA V2.0 I put a: pebbled optic, a Luxeon V2 3000K from led4power, a 15mm driver with Bistro HD OTSM from Lexel , a rubber tailcap from On The Road i3 , and a blue acqua GITD tube from CRX. The dangler and the skull are from AliExpress stores. The lighted switch was put on this light by Henk4U2 from whom I won the light 
On the Convoy S2+ mini, I put: a lighted tailswitch from Convoy, a blue ruber tailcap from Kaidomain (AliExpress store), a pocket clip from the Nitefox ES10K (that I modded with butane lighter to modify the colour), a 17mm driver with Bistro HD OTSM from Lexel that I bought a while ago and that I had in use in another flashlight,, a Carclo 10511 from Nealsgadgets, a triple board with 3 XP-G2 S4-5A from Jaxman, and a blue acqua GITD gasket from CRX! The pill + spacer (from kiriba-ru) were already soldered before as seen on the indicated link!
The Black Tool AA V2.0 mod has been documented before.
All the lights have the same UI configured: Mode 9 of Bistro HD OTSM [ ONE7135, 0, //9: Basic Non-PWM ~150 lumen low regulated mode] + Moonlight + access to hidden Turbo and blinkies !
Finally I am having EDC flashlights as I want and need them! 
nice 5000k, 4000k, 3000k lineup
respect and congrats on your builds, including drivers and pebbled tir options
Thanks my friend
BTW, even not being 90CRI, the Luxeon V2 3000K produces a beautiful beam and has an amazing tint In photo it cannot be shown perfectly! This is an LED you’d probably appreciate too
Did you glue the clip or is it just snapped on? If you glued it what did you use?
Working on a buddies GT, converting it to the SBT-90 Gen 2. Making the battery carrier parallel wasn’t as bad as I thought it would be, for the driver I simply carved down a Q8 driver a little and swapped the FET for an Infineon then flashed Anduril. Close now! 
Edit: forgot to mention that I removed the brass donut connecting ring on the Q8 driver and put the brass button from the GT’s driver in the center.
Nop, not glued, only snapped in! Fits perfectly and doesn’t get out of the place Been carrying it for some days in this configuration and had 0 problems wit it, including no accidental activation!
I reckoned before that a Q8 driver would be a close enough fit, but making the carriers parallel is a good job! :+1:
Looks like, on some older 30Q’s, it does some 5040 lumens at start, makes 1.58Mcd in a 5M test. If the weather allows I’ll try to get a 30M lux test tonight and a beamshot or three…