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).
Repeated exhaust valve failure, the dispatch of replacement parts, and recommended ignition settings.
| Identifier | ExFiles\Box 83\1\ scan0469 | |
| Date | 22th April 1937 | |
| 200° To Rm{William Robotham - Chief Engineer}/GWH{George W. Hancock - Head Chateauroux}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. to Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}15/AP.22.4.37 6.B.1V. CHASSIS In view of the repeated exhaust valve failure on this car, we are sending out a new std. cylinder head complete, also 3 pistons, by Air Mail. When you have fitted the new piston and cylinder head return the old cylinder head to us complete for investigation as soon as possible. It would be advisable to check over your ignition setting which should be 4° B.T.D.C. full advance on the hand control. Is there any indication of the mixture being weak at high speeds.? Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||