I wanted to build an MT-G2 light from my Small Sun but I don’t want to direct drive or piggyback some driver in the huge cavity. Instead of this I asked Texas Ace to design a TA driver specially for the ZY-T08. Big thanks for him!
Firstly I builded the driver:

Because I thought there will be a lot of heat, I found a 10mm thick copper plate on the shelf so need to make it round to fit in the pill.

I don’t have access to a lathe so it was hard work

And it fit:

But I thought I can fit in another one above this so made another circle from the left copper and soldered them together:



Then cutted out the top shelf of the pill to put the led star directly on the copper.


Then glued in the copper with thermal compound. It was a tight fit.
And after that I modified the switch board to put in batteries in series instead of stock parallel. Cutted the trace between springs and the switch to the body contact. And made some holes to solder some wires from spring to switch through the board.



Made the hole bigger in reflector to fit the MT-G2. I used 18 AWG wires to the led so I put kapton tape to the bottom of reflector to avoid shorts and not to hurt led.

Made solder blobs for battery contact. Even work with flat tops.


Driver and led:

Soldered in:

Made some polarity markings to not mess up:

No electrical contact here so lot of thermal paste used here:

Everything in the place:

The edge of head lifted the batteries from contact so I done a little work here.

And it works:

Conrtol shot:

High with 7×7135 and 2.5A current:

Turbo with Fet and I measured 11.9 A without battery tube but the 22AWG wires probably lower this in the springs so I will later measure it at switch:

Nice beams:


Edit:
Measured numbers:
Output: 4830 lumens
Intensity: 62 Kcd
Throw: 498m