From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Comparison photograph of Special Ratio and Standard Ratio gear and bracket assemblies for the Kestrel engine.
| Identifier | ExFiles\Box 148\1\ scan0290 | |
| Date | 25th November 1940 guessed | |
| KESTREL SPECIAL RATIO E.{Mr Elliott - Chief Engineer} 40212 Bracket E.{Mr Elliott - Chief Engineer} 40215 Gear KESTREL STANDARD RATIO E.{Mr Elliott - Chief Engineer} 40142 Bracket E.{Mr Elliott - Chief Engineer} 40143 Gear | ||