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 comparing the power curves of two camshafts under identical conditions.
| Identifier | ExFiles\Box 180\M3\M3.4\ img032 | |
| Date | 16th September 1924 | |
| E.A.C. ENGINE POWER CURVES OF 2 CAMSHAFTS. TAKEN UNDER IDENTICAL CONDITIONS. E.A.C. CARB. C.Q. OPEN. MEAN DIFFERENCE BETWEEN CAMSHAFTS. 1.8% HIGH LIFT LOW LIFT REVS./MIN. | ||