As a kid I was brought up just around the corner from the Vincent factory. On a good day, my dad would let me stop and look at the bikes in the window of George Brown’s motorcycle shop, some of his own Vincent conversions, racers and record-breakers holding centre of the display.
Great memory - and shared with your dad!
You might like the song-— from Brit Richard Thompson—posted in post #4 just above your last on this thread.
The English lyric changed to Knoxville was.. “And down to Box Hill they did riiiiiide”