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).
List of experimental parts fitted to the 'A' Engine, with a test result for the propeller shaft.
| Identifier | ExFiles\Box 37\4\ scan 146 | |
| Date | 14th May 1917 | |
| R.R. A 285 (400 T) (S C. 526. 10-5-16) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1546. X.3045 Mr. Clark 14.5.17. EXPERIMENTAL "A" ENGINE The above Engine has been fitted with the following experimental parts F- X.3045 Propeller Shaft (Low Stanton Figure) Test Piece broke at 400 Blows. X.3046 Planet Pinions recessed on Bolt Holes. X.3025 Propeller hub countersunk for Bolt G.5694. (Sgd) R.H.Coverley. | ||