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 chassis starter rolling condition figures for the 20 HP model, comparing Standard, Lucas, and C.A.V. motors.
Identifier | ExFiles\Box 35\4\ scan 155 | |
Date | 23th May 1927 | |
X 4584 CHASSIS STARTER ROLLING CONDITION FIGURES. 20 HP. MOTOR. Standard 20 HP. Design. | Actual. | Lucas. | C.A.V. ENGINE TORQUE. | 560 | 500 | 500 | 500 GEAR RATIO. | 8.4 | 8.4 | 8.4 | 8.4 MOTOR TORQUE. | 66 | 66 | 66 | 66 MOTOR SPEED. | 810 | 715 | 750 | 960 AMPERES. | 137 | 142 | 190 | 153 VOLTS. | 9.26 | 9.16 | 8.4 | 9.0 ENGINE SPEED. | 96.5 | 85 | 89 | 114 E.H.P. | 1.7 | 1.74 | 2.14 | 1.84 B.H.P. | .85 | .76 | .785 | 1.00 EFFICIENCY. | .50 | .435 | .367 | .545 23.5.27. EFC. | ||