The following video was taken during a practice session for an underground stuntman show in San Diego, California. This was the first time the stuntman took his bone stock 1987 FXR Harley Davidson of this 20-foot ramp constructed from out of sheets of particle board, sawhorses and extension ladders.
Stunts like this in movies require a professional stunt coordinator who scrutinizes the details like takeoff angles, trajectories and speed. Obviously there was some miscalculations made as this stuntman missed his landing ramp and landed on flat pavement in a violent compression.
The stuntman was okay after this brutal impact but his beloved motorcycle he called “Travolta” was destroyed. This is the after aftermath: