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).
Torque test report for a motor at given speeds.
| Identifier | ExFiles\Box 64\1\ scan0231 | |
| Date | 21th September 1925 | |
| MOTOR FORM 3. TORQUE TEST OF MOTOR. (at given speeds) Date :- No:- Motor under test :- EAC. G.2 armature Speed:- Crawling (Teazer) Epicyclic Reduction gear ratio :- 96 to 31 Dia. of brake wheel:- 24" Weight of pan and portion of rope:- 0 lbs. 2 ozs. | Load in pan (lbs) (W). | Spring balance reading (S) lbs. ozs. | Amperes. | Field volts. | Arm. volts. | Total volts. | Field ohms. | Arm. ohms. | Total ohms. | W-S (lbs) | T-t (lbs) | Brake Torque (lb-inches). | |---|---|---|---|---|---|---|---|---|---|---|---| | 1.0 | 0 | 8 | 15.0 | 6.60 | 0.15 | 6.75 | 0.440 | - | - | 0.50 | 0.625 | 7.5 | | 0.5 | 0 | 4 | 12.0 | 5.20 | 0.13 | 5.33 | 0.433 | - | - | 0.25 | 0.375 | 4.5 | | 0 | 0 | 0 | 7.5 | 3.20 | 0.08 | 3.28 | 0.427 | - | - | 0 | 0 | 0 | | ||