4. Mount a model powerboat propellor and motor into carb. bell mouth and wire up to headlight. (Rudimentary supercharger).
5. Fill tank with 50% petrol, 40% tolulene and 10% castor oil, for that bit of lubrication.
At traffic lights, flip saddle vertical, slide onto rear mudguard turn headlight on wind throttle back and hang on.
Didn't last long but what a way to blow a motor!
Was everybody that daft when they were 18.
Brilliant!
Only daft youngsters grow up to be interesting adults; boring kids simply get older..