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).
Extract from a 10,000-mile report on the performance of a higher output dynamo on vehicle 18-GIV.
| Identifier | ExFiles\Box 62\3\ scan0136 | |
| Date | 30th January 1931 | |
| X6005 Extract from report on 18-GIV at 10,000 miles dated 30.1.31. X.6005. HIGHER OUTPUT DYNAMO, SUITABLE FOR HALF CHARGE SCHEME. RESISTANCE TO SUIT HALF CHARGE SCHEME TO LCP. D.70843. The dynamo output has been sufficient for the conditions of driving i.e. approx 4 hours, with full lights on daily. There has been sufficient current for starting purposes. The dynamo cut in at 17 M.P.H. The chart gives the output curves under the various conditions. The bulbs used were headlamps 12-14 v.{VIENNA} 36 w. side lamp Osram 12 v.{VIENNA} 4 w. tail lamp 16-18 v.{VIENNA} 8 w. Facia lamp bulbs Osram 16-18v. 3 w. The dynamo brushes became noisy as the dynamo heated up and would be objected to. | ||