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 graph of a dynamo, plotting ampere output and operating voltage against dynamo RPM and chassis MPH.
| Identifier | ExFiles\Box 62\3\ scan0057 | |
| Date | 4th February 1932 | |
| AMPERE OUTPUT APPROX: OPERATING VOLTAGE. DYNAMO R.P.M. CHASSIS M.P.H. 11/50 AXLE. 31.4" DIA. TYRES. 20/25 FITTED TO CHASSIS [illegible] 4.2.32 WITH DYNAMO No. N177817 TESTED WITH REGULATOR & CUT-OUT | ||