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 data sheet for starter motor open circuit E.M.F., flux, and static torque tests.
| Identifier | ExFiles\Box 64\1\ scan0306 | |
| Date | 21th April 1927 | |
| STARTER MOTOR TESTS. 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 | |-----|-----|---|-----|----| | 20 | | 30 | | 40 | |-----| | 50 | | 60 | | 80 | |-----| | 100 | | 120 | | 140 | |-----| | 160 | | 180 | | 200 | |-----| | 220 | | 240 | | C | Ts | Ts/C | Φs | es | |-----|-------|-------|-------|-------| | 20 | 3.5 | .175 | 69.0 | | | 30 | 6.4 | .213 | 83.9 | | | 40 | 10.6 | .265 | 104.3 | 9.67 | |-----|-------|-------|-------|-------| | 50 | 14.4 | .288 | 113.4 | 9.15 | | 60 | 19.2 | .320 | 126.0 | 8.74 | | 80 | 29.0 | .363 | 143.0 | 7.77 | |-----|-------|-------|-------|-------| | 100 | 39.0 | .390 | 153.7 | 6.75 | | 120 | 50.0 | .416 | 164.0 | 5.82 | | 140 | 61.8 | .441 | 173.9 | 4.89 | |-----|-------|-------|-------|-------| | 160 | 73.2 | .458 | 180.3 | 3.78 | | 180 | 85.0 | .472 | 186.0 | 2.825 | | 200 | 97.0 | .485 | 191.0 | 1.78 | |-----|-------|-------|-------|-------| | 220 | 108.5 | .493 | 194.1 | .64 | | 240 | - | - | - | | 21.4.27. | ||