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 report detailing dynamo complaints, failures, noise, and low output across different vehicle models.
| Identifier | ExFiles\Box 47\3\ Scan524 | |
| Date | 31th December 1932 guessed | |
| - 5 - 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. TOTAL DYNAMO COMPLAINTS. December Quarter. C.C. - 20 1 4 25) 28 Half charge scheme is now standard and should reduce dynamo complaints. W.P. - 3 - - 3) Previous * C.C. - 6 - 8 14) 14 W.P. - - - - -) Six Months. - 29 1 12 42 42 DYNAMO FAILURES. December Quarter. C.C. - 7 1 2 10) 11 Complete failure of dynamos is generally due to some external fault in installation, such as open circuit. W.P. - 1 - - 1) Previous * C.C. - 2 - 2 4) 4 W.P. - - - - -) Six Months. - 10 1 4 15 15 DYNAMO NOISY. December Quarter. C.C. - 5 - 2 7) 9 Minor adjustments to brush gear usually overcome these troubles. W.P. - 2 - - 2) Previous * C.C. - 3 - 6 9) 9 W.P. - - - - -) Six Months. - 10 - 8 18 18 DYNAMO LOW OUTPUT. December Quarter. C.C. - 8 - - 8) 8 Dynamos giving better performance at speed are now available for early cars. Lower field resistance also available for latercars with half charge scheme. See Depot Sheet No. Hd.{Mr Hayward/Mr Huddy}241. W.P. - - - - -) Previous * C.C. - 1 - - 1) 1 W.P. - - - - -) Six months. - 9 - - 9 9 | ||