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).
List of requirements and operating conditions for the starter motor and dynamo.
| Identifier | ExFiles\Box 154a\3\ scan0223 | |
| Date | 27th March 1936 guessed | |
| STARTER MOTOR & DYNAMO. (1) With the normal Summer oil as used in the car, the starter motor shouldbe able to start the engine at 20°F.{Mr Friese} (2) Noise. (3) Freedom from sticking. (4) Effect of stalled start or operation of the starter motor when engine running. (5) Dynamo. High speed running and traffic work to cope with requirements. (6) Absence of brush wear. Require proportions of Running in France one-third Running in London traffic two-thirds. | ||