From Silodrome
We've all seen this picture before. Kenny Roberts at 1973 Grand Nationals jumping the XS650 tracker.
Now, I'm a kid compare to you old timers, so I need an education.
Why the hell were they jumping 400lb flat trackers? Was this a TT Steeplechase? How many jumps were there? Was this a vintage version of supermoto? Are there events that I can compete in that are similar today?