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 efficiency curves of Girling cams and Bentley cams.
| Identifier | ExFiles\Box 120\3\ scan0128 | |
| Date | 3rd January 1935 guessed | |
| Y-axis: PERCENTAGE EFFICIENCY, 40, 50, 60, 70, 80, 90, 100 X-axis: LOAD - LBS, 0, 50, 100, 200, 300, 400, 500 Title: COMPARISON OF EFFICIENCY OF GIRLING CAMS. & BENTLEY CAMS. Curve 1: GIRLING EFFICIENCY CURVE Curve 2: BENTLEY EFFICIENCY CURVE Note: BOTH SETS OF READINGS TAKEN WITH IDENTICAL BRAKE DRUM IN POSITION. | ||