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).
Performance curve graph for a J Machine Dynamo, comparing different output armatures.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan152 | |
| Date | 31th August 1928 guessed | |
| 40/50 AMPERE OUTPUT OPERATING VOLTAGES 17 18.70 16 18.50 15 18.30 14 18.10 13 17.90 12 17.70 11 17.50 10 17.30 9 17.05 8 16.80 7 16.50 6 16.20 5 15.90 4 15.55 3 15.20 2 14.80 1 14.40 0 14.00 HIGHER - OUTPUT ARMATURE REPRESENTATIVE OUTPUT CURVE OF STANDARD PHANTOM N.B. DYNAMO AT 80°C (8° 121°) SPECIFIED CURVE OF OUTPUT REQUIREMENTS FOR 40/50 HP DYNAMO REPRESENTATIVE PERFORMANCE CURVE OF J MACHINE WITH HIGHER-OUTPUT ARMATURE No.1 B. 8.5" C 127.5° DYNAMO R.P.M. CHASSIS M.P.H. WITH 15/52 AXLE & 33.5" TYRE DIA. | ||