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).
Material analysis and hardness test results for a failed Condor crankshaft.
| Identifier | ExFiles\Box 76\3\ scan0105 | |
| Date | 16th April 1919 guessed | |
| 12 Condor crankshaft brokey on test Analysis Carbon = .38% Manganese = .48% Nickel = 3.39% Chromium = .68% Phosphorous = .025% Sulphur = .036% Silicon = .33% Brunell = 302 x 100 | ||