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).
Performance characteristic chart for the X 4342 C.A.V. Motor Type S.C.
| Identifier | ExFiles\Box 51\5\ Scan176 | |
| Date | 21th October 1921 guessed | |
| STARTER MOTOR BRAKE EFFICIENCY X 4342 C.A.V. MOTOR TYPE S.C. EFFICIENCY VOLTAGE SPEED (R.P.M.) HORSE POWER TORQUE (POUND INCHES.) AMPERES B.H.P. TORQUE VOLTS SPEED | ||