A new study suggests a possible cause of the pitch’s erratic flight — sudden changes in the drag force on a ball, due to a phenomenon called a drag crisis. The result is at odds with previous ...

The airspeed is NOT the road speed unless the bike is moving in still air. It is the speed of the bike relative to the air that must be used to estimate the aerodynamic drag. The two curves associated ...

POLICE SAY SO MANY BIKERS SPEED THROUGH THAT CURVE ON WEEKENDS ONE DOWN MEMBER SAYS IT'S SO LOUD THEY CAN'T SLEEP AT NIGHT. THEY QUESTIONED WHAT JPD CAN DO TO CRACK DOWN ON DRAG RACING BIKERS. >> IT'S ...