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 results form for starter motor open circuit E.M.F., flux, and static torque.
| Identifier | ExFiles\Box 64\1\ scan0280 | |
| Date | 21th April 1927 | |
| STARTER MOTOR TESTS. G 2 FORM 4. OPEN CIRCUIT E.M.F. AND FLUX TEST FOR Φe AND STATIC TORQUE TEST FOR Φs L and β as on Form 3. | C | ee | N | e/N | Φe | | C | Ts | Ts/C | Φs | ls | |---|---|---|---|---|---|---|---|---|---|---| | 20 | | | | | | 20 | 6.0 | .300 | 129.8 | | | 30 | | | | | | 30 | 10.7 | .3565 | 154.1 | 10.41 | | 40 | | | | | | 40 | 15.5 | .388 | 167.8 | | | 50 | | | | | | 50 | 20.5 | .410 | 177.2 | 9.94 | | 60 | | | | | | 60 | 26.0 | .433 | 187.3 | 8.41 | | 80 | | | | | | 80 | 37.0 | .4625 | 200.0 | 8.33 | | 100 | | | | | | 100 | 48.0 | .480 | 207.5 | 7.365 | | 120 | | | | | | 120 | 60.0 | .500 | 216.2 | 6.425 | | 140 | | | | | | 140 | 72.0 | .514 | 222.5 | 5.46 | | 160 | | | | | | 160 | 84.2 | .526 | 227.3 | 4.43 | | 180 | | | | | | 180 | 96.5 | .536 | 231.7 | 3.39 | | 200 | | | | | | 200 | 109.0 | .545 | 235.5 | 2.45 | | 220 | | | | | | 220 | 121.0 | .550 | 238.0 | | | 240 | | | | | | 240 | 133.5 | .556 | 240.2 | | 21.4.27. | ||