I’ve been watching racing motorcyclists take on racing car drivers. The major performance advantage which cars have is stable braking. In addition, race cars have enormous downforce.
Bikes could go faster if we attached inverted wings, but that would make overtaking hazardous and probably not work well on street circuits (Like the TT).
So, today’s invention is a downforce generator for racing bikes.
This would consist of a large fan attached to a duct held very close to the track (flexibly fringed, like a hovercraft skirt).
The fan would be driven off the engine to generate a low pressure region beneath the machine. Air would flow upwards through the duct and be exhausted behind the rider, as indicated.