Fifties bikes had unreliable engines but most now refurbished, though post ’63 T20’s have the strongest motors and reasonable chassis, though not without vibration and twitchiness at speed. Handling improved further when the motor was installed in the Bantam chassis in ’65, known as the Bantam Cub, which was followed by the Super Cub (which used Bantam tank and panels). Look for a quiet, smooth(ish), oil tight engine.
