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 test log sheet for various motor designs, recording brake torque, current, speed, and remarks.
| Identifier | ExFiles\Box 70\4\ scan0157 | |
| Date | 6th July 1929 | |
| -2- Date | Motor design | (8) Brake torque >20 to 36 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) Remark 4.7.29 | AC. | 28.5 | 13.0 | 972 | 1080 | OK. | - | 252 | OK. 3.7.29 | AD. | 33.8 | 13.0 | 985 | 928 | OK. Gears noisy. | - | 179 | OK. 4.7.29 | AE | 36.0 | 13.0 | noise 960 moderate | 992 | OK. | - | 198 | OK. 5.7.29 | AF | 22.5 | 13.0 | noise 1008 fair. | 896 | OK. | - | 123 | OK. 4.7.29 | AG | 37.5 | 13.5 | Noise 1000 fair. | 960 | OK. | - | 154 | OK 4.7.29 | AH | 20 | 13.0 | 971 Noisy | 896 | OK | - | 132 | OK. 6.7.29 | AI | 27 | 13.5 | noise 984 moderate | 896 | OK | - | 156 | OK. 5.7.29 | AJ | 38.2 | 13.0 | 1008 Noisy | 896 | OK | - | 192 | OK. | ||