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).
Graph illustrating the effect on engine weight of varying the bore and stroke dimensions.
| Identifier | ExFiles\Box 88\3\ scan0173 | |
| Date | 6th July 1935 | |
| V BORE 3.0 3.5 4.0 PER CENT HEAVIER 20 15 10 5 0 5 10 15 20 LIGHTER BORE STROKE STROKE 3.5 4.0 4.5 5.0 3.500 x 4.500 ENGINE EFFECT ON WEIGHT OF:- (a) VARYING STROKE, KEEPING BORE CONSTANT. (b) VARYING BORE, KEEPING STROKE CONSTANT 7.H. Smith 6-VII-35 Hs{Lord Ernest Hives - Chair} 2077 | ||