The Essex cylinder head gasket and its relation to the 'Swallow' engine design.
| Identifier | ExFiles\Box 180\M1\9\ img012 | |
| Date | 23th September 1921 | |
| To HS. {Lord Ernest Hives - Chair} from E. {Mr Elliott - Chief Engineer} Copy to CJ. WOR. {Arthur Wormald - General Works Manager} X4405 XA217 RE "SWALLOW(Experimental 3rd LINE MODEL 12/15hp 2-3 seater)". ORIGINAL RECEIVED 23 IX 21 RDSS. (11-20) 2M B.&Co. E1/G24/9/21. 2 I want the Essex cylinder head gasket to find the width of the combustion chamber. The Essex is such a beast for detonating when run on petrol only of No.1 quality that Mr. Royce thinks we may have to abandon the economical scheme that has been got out for the "Swallow(Experimental 3rd LINE MODEL 12/15hp 2-3 seater)", and put both the valves in the head. You will remember that the arrangement of the "Swallow(Experimental 3rd LINE MODEL 12/15hp 2-3 seater)" is not the same as the Essex, but the combustion chambers are of similar form. E. {Mr Elliott - Chief Engineer} (OE) | ||
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).