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).
List of failures experienced on car unit 3-B-60 No.4 up to a mileage of 50,524.
| Identifier | ExFiles\Box 124\2\ scan0381 | |
| Date | 18th February 1942 | |
| To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Chassis 1044 Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}11/OH.18.2.42. 3-B-60 Car Unit B.60 No.4. We herewith give you a list of all the failures experienced on the above car during its mileage to date of 50,524. Speedometer cable drive failed. 11652 miles Rear Spring interleaving failed 11824 miles Tapper cover cork washer failed causing oil leak 12352 miles Off side front shock damper failed due to loss of oil. 16538 miles Dynamo failed. This was due to gummy deposit oozing from the Micanite commutator segment insulators' this cheap form of insulater was introduced without experimental knowledge. Production have now reverted to the recommended Mica insulators 16921 miles Dynamo bracket failed 19251 miles Off side front shock damper failed due to loss of oil 22491 miles Water Pump bearing failed (Alum Pump) 24908 miles Ignition distributor driving springs failed. These were the early type which were fitted to Wraith cars and later modified, correct driving springs have run on 9-B-5 without further trouble for 31,000 miles. 24934 miles Air silencer bracket broken. 30895 miles Water pump bearing failed (Alum Pump) 32902 miles Water system thermostat failed 37106 miles Radiator matrix leaked (Std. Production) 44237 miles Rear Spring interleaving failed 46400 miles Exhaust tail pipe failed. 49764 miles -continued- | ||