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).
Note on fitting stiffer propeller drive shafts to Kestrel engines for the 1929 Schneider Trophy race.
| Identifier | ExFiles\Box 10\4\ 04-page58 | |
| Date | 9th January 1939 guessed | |
| KESTREL ENGINES. PROPELLOR DRIVE SHAFTS ON 1928 SCHNEIDER TROPHY ENGINES. OWING TO THE PROPELLOR VIBRATION, SHAFT WHIRLING, ETC., EXPERIENCED, IT WAS DECIDED TO FIT STIFF SHAFTS AFTER THE SCHNEIDER TROPHY RACE FOR 1929. | ||