| Year | 1955 |
| Date | 04-Aug |
| Volume | 113 |
| Issue | 2,828 |
| Page | 140 |
| Category | Notable Model I.C. Engines |
| Part | |
| Title | The Webra "Mach-1" |
| Author | P.G.F.Chinn |
| Notes | The air-cooled version, robust crankcase and ball-bearing housing, rotary disc-valve, conversion to water cooling |