| Year | 1937 |
| Date | 23-Dec |
| Volume | 77 |
| Issue | 1,911 |
| Page | 613 |
| Category | Petrol Engine Topics |
| Part | |
| Title | The "Kestrel" 5 c.c. Two-stroke Engine |
| Author | Edgar T.Westbury |
| Notes | Fitted with 12 in dia. by 9 in pitch airscrew, distinctive features of the "Kestrel" engine, simplified port design, rotary inlet-valve, general arrangement, built-in carburettor, contact-beaker, structural design, main bearing |