Touching the throttle in a turn would be interesting. I looked up radial engine motorcycle. Most of them had the engine mounted at 90 degrees from that. I think that would work better. It would be harder to balance and doesn’t look nearly as cool.
I would think the gryoscopic forces would ruin it as a viable bike.
I dont even like choppers. It defeats the geometry of a bikes handling.
However, I only posted it as the chicoms are likely to screw up to. They will just take 2 decades to do it.