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).
Summary of dynamo complaints, failures, noise, and low output over a six-month period.
| Identifier | ExFiles\Box 130\1\ scan0028 | |
| Date | 31th March 1933 guessed | |
| - 5 - TOTAL DYNAMO COMPLAINTS. 20 HP. 25 HP. PH.I PH.II TOTAL GRAND TOTAL. REMARKS. March quarter. C.C. - 17 3 3 23) W.P. - 1 - 1 2) 25 Three rate charge scheme is now standard on 20/25 HP. cars and Previous quarter. C.C. - 20 1 4 25) should reduce dynamo complaints. W.P. - 3 - - 3) 28 Six Months. - 41 4 8 53 53 DYNAMO FAILURES. March quarter. C.C. - 5 3 1 9) W.P. - - - - -) 9 Complete failure of dynamos is generally due to some external Previous quarter. C.C. - 7 1 2 10) fault in installation, such as W.P. - 1 - - 1) 11 open circuit. Six Months. - 13 4 3 20 20 DYNAMO NOISY. March quarter. C.C. - 1 - 2 3) W.P. - 1 - 1 2) 5 Minor adjustments to brush gear usually overcome these troubles. Previous quarter. C.C. - 5 - 2 7) W.P. - 2 - - 2) 9 Six Months. - 9 - 5 14 14 DYNAMO LOW OUTPUT. March quarter. C.C. - 11 - - 11) W.P. - - - - -) 11 Dynamos giving better performance at speed are now available for early Previous quarter. C.C. - 8 - - 8) cars. Lower field resistance W.P. - - - - -) 8 also available for later cars with half charge scheme. See Depot Sheet Six Months. - 19 - - 19 19 No. Hd.{Mr Hayward/Mr Huddy} 241. | ||