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 on engine faults including spring drives, timing gear rattles, valve springs, and water leaks from cylinders.
| Identifier | ExFiles\Box 130\1\ scan0059 | |
| Date | 30th June 1933 guessed | |
| -7- 20 HP. 25 HP. PH.I. PH.II. TOTAL. GRAND TOTAL. REMARKS. ENGINE - SPRING AND SLIPPER DRIVE. June Quarter. C.C. 2 6 2 11 21) V.P. - 2 - 4 6) 27 Previous Quarter. C.C. 1 13 2 10 26) V.P. - 2 1 3 6) 32 Six Months. 3 25 5 28 59 59 REMARKS: Early 20 HP. and PH.I. - These can be cured by fitting cotton duck washers in place of bakelite. PH.II. - Latest type low inertia drive with "window" type pressure plate cures this trouble. See Depot Sheets Hd.{Mr Hayward/Mr Huddy}190 and Hd.{Mr Hayward/Mr Huddy}227. ENGINE - RATTLE FROM TIMING GEARS. June Quarter. C.C. - 42 - - 42) V.P. - 2 - - 2) 44 Three months. - 44 - - 44 44 REMARKS: 20/25 HP. Synchromesh cars - Attention of Experimental Dept. urgently required to cure gear rattles. ENGINE - VALVE SPRINGS BROKEN OR WEAK. June Quarter. C.C. - 18 2 3 22) V.P. - - - 9 9) 31 Previous Quarter. C.C. - 1 - 2 2) V.P. - - 1 6 8) 10 Six Months. - 19 3 19 41 41 REMARKS: New type valve springs with semi-open ends and circular grinding are now being used and are a definite improvement. The 20/25 HP. failures are believed to be due to a batch of faulty material. WATER LEAKS FROM CYLINDER. June Quarter. C.C. - - 1 3 4) V.P. - - 11 71 82) 86 Previous Quarter. C.C. - 1 3 1 5) V.P. - - 5 53 58) 63 Six Months. - 1 20 128 149 149 REMARKS: PH.I and PH.II definitely cured by fitting nickel plated copper tubes in place of original aluminium tubes. Also bronze core hole plugs instead of aluminium. All cars being attended to. Depot Sheet Hd.{Mr Hayward/Mr Huddy}221. | ||