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 page detailing various vehicle component failures and their average mileage statistics.
| Identifier | ExFiles\Box 107\2\ scan0241 | |
| Date | 11th March 1937 | |
| (2) Cont'd.{John DeLooze - Company Secretary} -2- 11.3.37 Pulling Uneven NS.{Norman Scott} 4¼ - 14 Average mileage 6,473 NS.{Norman Scott} 3½ - 23) " " 20,464 OS. - 15) Thumping of Brakes 4¼ - 16 " " 8,754 3½ - 39 " " 14,483 Juddering of Front 4¼ - 3 " " 14,237 3½ - 6 " " 20,487 Fierce rear 4¼ - 6 " " 6,287 3½ - 5) " front 3½ - 8) " " 20,851 Oil on Fabrics 3½ - 6 " " 22,273 (3) Clutches. 74 failures comprising:- Jaggers 4¼ - 16 Average Mileage 6,000 Worn Out 3½ - 33 10,000 to 30,000. Slipping 4¼ - 1 Average mileage 19,177 3½ - 18 Fierce 3½ - 2 Slow Stopping 4¼ - 2 3½ - 2 (4) 14 Failures of Dynamo drive comprising scrubbing of rubber blocks causing a rattle - 4¼ - average mileage 7,900 (5) 27 Front Axle controls, comprising:- Slack and end play in bottom bearings causing rattle and brake judders - 4¼ - average mileage 8,753 3½ - all cars are checked - 105 cases dealt with. (6) 44 Noisy Rev. Counter Drives 4¼ - average mileage 4,414 24 " " " 3½ - 21,320 (7) 23 Speedometer drive noisy - 4¼ - average mileage 4,876 | ||