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 motor designs, including torque, current, and speed.
| Identifier | ExFiles\Box 70\4\ scan0173 | |
| Date | 16th August 1929 | |
| Top of page: -2- TABLE HEADERS: Column 1: Date Column 2: Motor design Column 3: (8) Brake torque 20 to 36 lb-inches Column 4: Current 13 to 15 amperes Column 5: (9) Brake torque ≥900 lb-ins Column 6: Speed Column 7: (10) Remarks Column 8: (11) Remarks Column 9: (12) Torque lb-ins 50-250 Column 10: (13) Remark TABLE DATA (row by row): Row 1: 16-8-29 | MT85 | 22.5 | 13.0 | 935 | 912 | OK | OK | 153 | OK Row 2: 17-8-29 | MT95 | 45.8 | 13.5 | 900 | 900 | OK | OK Noisy. | 150 | OK Row 3: 17-8-29 (Note: '6m Prod'n' written above) | MT45 | 24.0 | 13.5 | 1075 | 835 | OK | OK | 135 | Prod'n OK Row 4: 18-8-29 | LU15 | 43.5 | 13.5 | 900 | 960 | OK | OK | 117 | OK Row 5: 20-8-29 | LU25 | 39.8 | 14.0 | 960 | 960 | OK | OK | 102 | OK Row 6: 20-8-29 | LU65 | 46.5 | 13.25 | 1025 | 955 (Note: '15.66:1' written above) | OK | OK | 132 | OK Row 7: 24-8-29 | CD35 | 23.7 | 13.0 | 930 | 875 | OK | OK | 156 | OK Row 8: 28-8-29 | WJ65 | 33.8 | 13.75 | 972 | 890 | OK | OK | 163.5 | OK | ||