Not to detract from the man's video, a quick look at some video of racing long tails in Thailand is pretty fun. 750cc hot rods, and extreme.
BWL, member CarPLayLB just had a custom cam grind done for more mid range torque done by one of the jobbers that would be more suited to the higher torque requirements presented by spinning a prop, without having to have your throttle hand wrapped around a 9000 RPM spinning piece of Communist Copies of a Honda. :laugh: