Scot Alexander Breithaupt ( July 14 , 1957 -- July 4 , 2015 ) was an entrepreneur , `` Old School '' professional Motorcycle MX and Bicycle Motocross ( BMX ) racer and a founding father of BMX in 1970 whose prime competitive years were from 1970 to 1984 .
Scot Alexander Breithaupt ( July 14 , 1957 -- c. July 4 , 2015 ) was an entrepreneur , `` Old School '' professional Motorcycle MX and Bicycle Motocross ( BMX ) racer and a founding father of BMX in 1970 .