Hah...did you ever crunch aluminum cans with your heels, walk around with them for a while on your heels, then remove one and place it upside down on the top of the rear wheel where it passes through the frame?
It made a cool motor sound, especially if you had a knobby tire!
Heh, nowadays, they just give kids a motorcycle, they don’t need no stinkin’ sound generator...:)
Yep, we did the can thing. Back then cans were made of tin and were a lot heavier and thicker. I believe that’s why soft drinks today don’t have as much carbonation. The whimpy aluminum cans can’t take the pressure.