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).
Data table showing pendulum lever load, torque, wheel torque, and efficiency for forward and reverse drive.
| Identifier | ExFiles\Box 28\3\ Scan024 | |
| Date | 11th June 1934 guessed | |
| -2- Pendulum Lever Load - lbs. | Pendulum Lever Torque lbs/ins. | Wheel Torque lbs/ins. | Efficiency. ---|---|---|--- | | Forward Drive | Reverse Drive | Forward Drive | Reverse Drive 50 | 509 | 68.0 | 14.4 | 49.9 | 42.4 100 | 1018 | 119.8 | 34.7 | 57.0 | 51.1 200 | 2036 | 244.5 | 71.7 | 55.4 | 52.8 300 | 3054 | 406.0 | 88.4 | 50.2 | 43.4 400 | 4072 | 561.5 | 104.0 | 48.4 | 38.3 Hs{Lord Ernest Hives - Chair}/F.J.Hardy. | ||