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).
Performance increase from a 110° camshaft on various engines, referencing a 40/50 indicator diagram.
| Identifier | Morton\M7\ img051 | |
| Date | 21th December 1923 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to RG.{Mr Rowledge} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to OY. Handwritten: X3056 Hsl/LG21.12.23. 40/50 INDICATOR DIAGRAM. Handwritten: X3423 (struck through) Handwritten: X3056 X4580 The tests given in the attached report were taken in connection with the 110° Camshaft which we have found to be an improvement on the EAC-1 and 20 HP. engines. On the 40/50 HP. we have not obtained the same percentage increase with this Camshaft as we have on the other engines although it does give approximately 5% increase. Further reports of tests will be sent in connection with this. Hs.{Lord Ernest Hives - Chair} | ||