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 for a starter motor, detailing open-circuit E.M.F. and flux calculations.
| Identifier | ExFiles\Box 34\3\ Scan175 | |
| 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 45a L and β as on Form 3. TABLE DATA: Left Section: Columns: C, eₑ, N, eₑ/N, Φₑ Row 1: C: 20, 30, 40 | eₑ: 11.65, 10.80 | N: 3150, 2530 | eₑ/N: .00370, .00427 | Φₑ: 123, 142 Row 2: C: 50, 60, 80 | eₑ: 9.96, 9.33, 8.12 | N: 2050, 1815, 1440 | eₑ/N: .00479, .00514, .00563 | Φₑ: 160, 171, 188 Row 3: C: 100, 120, 140 | eₑ: 6.82, 5.46 | N: 1140, 880 | eₑ/N: .00597, .00621 | Φₑ: 199, 207 Row 4: C: 160, 180, 200 Row 5: C: 220, 240 Right Section (data columns are empty): Columns: C, Tₛ, Tₛ/C, Φₛ C Values: 20, 30, 40; 50, 60, 80; 100, 120, 140; 160, 180, 200; 220, 240 Taken from curve in X.2642 and calculated proportionately. | ||