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r&D racing

INSIDE SECRETS OF THE INNOVATIVE R&D GENIUS THROTTLE BODY

You?ve heard of Dean Dickinson?you just don?t know it. Dean’s dad, Rudy, was one of the pioneer tuners of the two-stroke era. What Rudy learned, he passed on to his sons Dean and Rudy Jr. (all three were successful racers in their day). Dean is a Gyro Gearloose inventor?and we don?t mean that as a slam. Dean sees problems as no problem. He’s more than a technician, more than an engineer and more than a mechanical genius. So, where would you have heard of Dean Dickinson? Let us list the ways. (1) The com…

MOTOCROSS ACTION’S MID-WEEK REPORT (10/25/11)

By John Basher PHOTO OF THE WEEK     Sean Kranyak (12) and Jeff Pestana (13) blast a berm during our 250 Four-Stroke Shootout at Zaca Station. MINI-VIEW: JEFF WARD Jeff Ward graces the July 1986 cover of MXA.     Multiple championships in multiple classes. 10 wins in the 500 Nationals. 11 wins in the 125 […]

FUTURE TECH: R&D’S INGENIUS THROTTLE BODY PROTOTYPE MIGHT ELIMINATE BUTTERFLIES

No butterfly means absolutely no obstruction to the airflow at 100 percent throttle opening. Given the fact that most motocross bikes use almost identical fuel-injection throttle bodies, it is surprising to learn that there are many different designs being used in the rest of the motorsports world. Ever since the development of the Bendix Electrojet for the 1957 Rambler Rebel, the throttle body has been the object of inventor attention. On fuel-injected engines, the throttle body is the part of the air …