The 60 deg situation with china ignition is completely illogical. As the other guy said, show a picture.

The only possible benefit to justify 2 halls is the pic could easily tell if the engine started backwards and then it could command a shut down. Otherwise there isn't anything you can do with two you can't do with one with clever firmware.

The difference in the valve diameters is probably rooted in the fuel originally intended for the engine. By the way, when you compared the valves on the 1.8 vs the FG, you made three comparisons two of which contradicted.

Anyone interested in seeing pictures of a scratch 1/4 scale Skybolt bipe in getting close to finishing , speak up. 50cc gas 2-stroke.