| Year | 1954 |
| Date | 29-Jul |
| Volume | 111 |
| Issue | 2,775 |
| Page | 120 |
| Category | Petrol Engine Topics |
| Part | |
| Title | The 50 c.c. "Bumble Bee". A New Development of the "Busy Bee" Auxiliary Engine Intended Primarily for Stationary Work |
| Author | Edgar T.Westbury |
| Notes | Expansion chamber, end caps, outlet pipe and cap nut, magneto timing, finned rotor as used on "Bantamag" and "Migemag" magnetos, alternative ignition equipment |