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).
Table of measurements for drop arm load, wheel torque, and efficiency in forward and reverse drive.
Identifier | ExFiles\Box 2\2\ B002_X 115 150-page33 | |
Date | 23th May 1933 guessed | |
-2- Measurement of application of drop arm load = 7⅜" = 7.375" Radius of application of wheel load = 7.625" Load on Drop Arm lbs. | Drop Arm Torque lbs. ins. | Forward Drive Load on Wheel lbs. ozs. | Forward Drive Wheel torque lbs. ins. | Reverse Drive Load on Wheel lbs. ozs. | Reverse Drive Wheel torque lbs. ins. | Forward Eff'y % | Reverse Eff'y % 50 | 368 | 9. 6 | 71.5 | 1. 7 | 11.0 | 51.0 | 30.2 100 | 737 | 18. 11 | 142.4 | 3. 1 | 23.3 | 51.2 | 32.0 150 | 1106 | 26. 15 | 205.0 | 4. 12 | 36.2 | 53.3 | 33.1 200 | 1475 | 35. 8 | 270.8 | 6. 2 | 46.7 | 53.8 | 32.0 250 | 1843 | 45. 9 | 348 | 8. 5 | 63.3 | 52.3 | 34.7 300 | 2212 | 54. 13 | 418 | 11. 5 | 86.3 | 52.2 | 39.5 Ha/F.J.Hardy. | ||