| Year | 2012 |
| Date | 15-Jun |
| Volume | 208 |
| Issue | 4,432 |
| Page | 864 |
| Category | Internal Combustion |
| Part | 2 |
| Title | I/C Topics. The Firefly .46 Project |
| Author | Frank Payne |
| Notes | Describes how he built this practical 7.45cc aero glow engine for beginners. Original design by Alex Whittaker, article by Frank Payne, drawings by Glenn Royds, making a start, crankcase, square section, round bar, accuracy, milling the flats, cross bore |