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).
Efficiency curves and brake tests for a sequence starter motor.
| Identifier | ExFiles\Box 64\1\ scan0252 | |
| Date | 19th November 1926 | |
| x7620 To AJS. from EFC. EFCa/T19.11.26. -X 7625 SEQUENCE STARTER MOTOR. X 7620 As requested, we now send to you curves shewing the amperes for each torque and the efficiency for each torque, for the sequence starter motor, these curves being an average of three motors upon which we have made brake efficiency tests. You will notice that the efficiency is rather lower than we used to obtain on the 6" motor (present standard). We regret we are not yet ready with the further information you require. We are attempting, at the same time as recommending new windings, to find out the reason of the lower efficiency of the present sequence starter motor as compared with the 6" motor. EFC. | ||