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 Bentley ignition advance curves at 2000 RPM, plotting brake lift against ignition advance for various loads.
| Identifier | ExFiles\Box 133\2\ scan0141 | |
| Date | 7th January 1935 | |
| BENTLEY IGNITION ADVANCE CURVES, 2000 R.P.M., BRAKE LIFT - LBS., IGNITION ADVANCE - DEGREES, FULL LOAD, MAX. POWER, HALF LOAD, 2% POWER DROP, QUARTER LOAD, 3% POWER DROP, F.{Mr Friese} L. S., 7. 1. 35 | ||