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).
Explaining the design choice of casting the 'Seagull' engine's cylinder block in two separate groups of three.
| Identifier | ExFiles\Box 72\1\ scan0164 | |
| Date | 27th January 1923 | |
| X9050 To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. to CJ. c. to Hs.{Lord Ernest Hives - Chair} E1/M27.1.23. "SEAGULL" CYLINDER BLOCK, CYLINDER HEAD GASKET, AND ALTERATION TO HEAD. X.9050. We send you herewith drawings Nos.LeC.1672 and 1673, shewing the above. You will notice that there are 2 cylinder blocks in groups of 3. This is done for the sake of convenience and simplicity in casting the cylinders as a complete block of 6 is rather a colossal job. The shape of the cylinder block has been skimmed down as much as possible, and this entails some alteration to the cylinder head, which is shown on the latter drawing. MADE AT CHORLEY E.{Mr Elliott - Chief Engineer} | ||