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).
Output speed performance curves for 20/25 Dynamos.
| Identifier | WestWitteringFiles\V\2January1931-April1931\ Scan080 | |
| Date | 25th March 1931 | |
| AMPERE OUTPUT AT CONSTANT OPERATING VOLTAGE OF 14.0 OUTPUT SPEED PERFORMANCE CURVES OF 20/25 DYNAMOS II 56 COIL STANDARD MACHINE (58 C° SETTING) 8° 123.5° I 48 COIL HIGH OUTPUT MACHINE (65 C° SETTING) 12° 123.5° A LUCAS MODEL C5-0 TYPE N-0 (MAKER'S SETTING) 5° 115° B LUCAS MODEL C5-0 TYPE N-0 (58 C° SETTING) 5° 117° DYNAMO R.P.M. CHASSIS M.P.H. 11/50 AXLE 31.4" DIA TYRES 20/25 2 F.J.A. 25-3-31 | ||