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 of valve lift and velocity against camshaft rotation for a standard Bentley camshaft.
| Identifier | ExFiles\Box 127\3\ scan0028 | |
| Date | 30th March 1935 guessed | |
| 1 DIVISION = 2° OF CAMSHAFT ROTATION. STD BENTLEY LEC 3292 VALVE LIFT INS. .020 .015 .010 .005 0 VELOCITY INS PER DIV. .0100 .0075 .0050 .0025 1 2 3 4 5 6 7 8 9 10 11 12 13 16 15 | ||