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).
Instructions for a road test of the dynamo controller on a P.G.II model.
| Identifier | ExFiles\Box 59\1\ Scan124 | |
| Date | 9th March 1927 | |
| To: EFC. Order No.: AC. 83. Customer's No.: X. Road Test of Dynamo Controller on P.G.II. Starting with the battery standing at 12.5 v, open-circuited, the car was run with dynamo charging at its maximum rate until the voltage (measured at the switchbox) reached a value of 16.0, the output being 10.0 amperes. At this point the controller operated reducing the figures at once to 14.8 v, 5.0 amps. After this the voltage rose to 15.1 in further running, but did not exceed this amount. Ignition current has to be added to all the above ampere readings. These operating figures were repeated consistently two or three times, the engine (Contd) | ||