The motorcycle body, engine, and rear end is the Yamaha TW200.
Those things that look like drum brakes are adapters that I machined. I used the "obsolete" Yamaha TW200 drum brake hubs (still available) and replaced the brake drum with my adapter. The front end is the front of a YFZ 450 ATV frame, suspension, steering, and hubs with the hydraulic disk brakes. My adapter allowed me to use the stock ATV hubs with the stock TW200 front wheels. In other words, I mounted motorcycle wheels on ATV hubs. By doing that, I didn't have to design my own disk brakes, I could use the stock ATV setup.
The best way a trike should be built is with both wheels in front. If your are lifting a wheel and you hit the brakes it will bring the wheel down. If you do that on a trike with the two wheels in back it will send you right over.
Plus, riding dirt, you can dab a foot without running over your foot.
If the original ATC's had been built this way they would probably still be on the market. I won't ride a trike with two wheels in back.
Since I started with a street legal dual-sport motorcycle the trike is also street legal. I've attached a photo of it in the Maze District of Canyonlands National Park, Utah. No ATV's or other non-street legal bikes are allowed in there.
BTW - I also own and ride a CanAm Spyder (high performance trike with two wheels in front).
Trikester