The XR-750 is 90 pounds heavier and the Honda is a motocross bike whereas the Harley is a flat-track racing motorcycle. Most notably, Knievel used Honda CR500 motocross bikes, whereas his father made most of his record-breaking jumps using a Harley-Davidson XR-750 motorcycle. Knievel's jumping career was markedly different from his father's. Knievel then went solo after his father's approval. He wanted to lengthen his jumps, but his father disapproved. Knievel attended Central Catholic High School in Butte, Montana between 19, but never graduated. On tour with his father when he was twelve, he would perform in the pre-jump shows. He performed his first show with his father at Madison Square Garden when he was eight. Knievel began jumping his bicycle when he was four years old and learnt how to ride motorcycles by the age of seven. Robbie Knievel was born on May 7, 1962, the son of stuntman Robert 'Evel' Knievel and his first wife, Linda. Further information: Evel Knievel § Marriages and children
