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).
Log sheet detailing test results for various motor designs, including torque, current, and speed measurements.
| Identifier | ExFiles\Box 70\4\ scan0169 | |
| Date | 13th August 1929 | |
| -2- Date | Motor design | (8) Brake torque 20 to 60 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 31-7-29 | PQ 15 | 33.8 | 13.3 | 979 | 980 | OK | OK | 186.5 | OK 31-7-29 | PQ 25 | 33.0 | 13.5 | 1010 | 960 | OK | OK | 122 | OK 31-7-29 | PQ 35 | 37.5 | 13.0 | 978 | 898 | OK | OK | 132 | OK 1-8-29 | PQ 45 | 38.3 | 13.5 | 1020 | 896 | OK | OK | 99 | OK 13-8-29 | CD 95 | 39.7 | 14.125 | 930 | 912 | OK | fair, noisy, variable | 123 | OK 2-8-29 | PQ 55 | 33.0 | 13.0 | 965 | 960 | OK | OK | 145.5 | OK 5-8-29 | PQ 65 | 40.5 | 13.7 | 924 | 930 | OK | OK | 130.7 | OK 7-8-29 | PQ 75 | 61.5 | 14.0 | 1038 | 928 | OK | OK | 120 | OK | ||