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).
Test log sheet recording performance data for various motors, including torque, current, speed, and noise levels.
| Identifier | ExFiles\Box 70\4\ scan0159 | |
| Date | 11th July 1929 guessed | |
| -2- Date | Motor desig. | (8) Brake torque > 20 lb-inches. | Current 13 to 15 amperes. | (9) Brake torque 900 lb-ins | Speed | (10) Remarks | (11) Remarks | (12) Torque lb-ins 50-250 | (13) Remarks -- | -- | -- | -- | -- | -- | -- | -- | -- | -- 8.7.29 | AK | 22.5 | 13.5 | 941 | 896 | OK Fairly quiet. | - | 87.7 | OK 8.7.29 | AL | 40.5 | 13.75 | 1021 | 990 | OK Fairly quiet | - | 175 | OK 9.7.29 | AM | 27.0 | 13.5 | 930 | 912 | Jams. Noise moderate | - | 142.5 | OK 9.7.29 | AN | 33.75 | 13.0 | 995 | 928 | OK Fairly quiet. | - | 174 | OK 10.7.29 | AO | 21.75 | 13.75 | 1008 | 896 | OK Some noise. | - | 184.5 | OK 10.7.29 | AP | 27.0 | 13.0 | 1032 | 896 | OK Noise moderate | - | 132 | OK 11.7.29 | AR WJ.25 | 33.8 | 14.0 12.5 | 1032 | 896 | OK Noise moderate | - | 186 | OK 11.7.29 | AS | 45.0 | 13.0 | 1057 | 896 | OK Noisy | - | 162 | OK =4.9.29. contd. | ||