| Year | 1955 |
| Date | 03-Mar |
| Volume | 112 |
| Issue | 2,806 |
| Page | 235 |
| Category | Nautical |
| Part | |
| Title | Model Power Boat News |
| Author | Meridian |
| Notes | Flash Steam - Engine Problems. Opposed twin poppet valve engine by A.Clay, design, materials, valve arrangement, A.Rayman's single-cylinder engine and double-acting engine, lubrication and clearances, non-racing engines |