The 1st bike I road was in 1969. It was a mini bike with a 4 hp B&S. I am #5 of 8 kids, so we took turns.
In 71 Dad brought home a old HD 65cc with a 3 speed shifter on the bars. The older kids got a 125 Moto Betta, I was on it in about 74.
In 78, with my oun $$ from working at the Ducati...