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).
Schedule of endurance and performance tests for steering and engine components.
| Identifier | ExFiles\Box 155\2\ scan0276 | |
| Date | 22th November 1938 guessed | |
| -4- FJH.{Fred J. Hardy - Chief Dev. Engineer} Steering. 20,000 miles in France as at present. 10,000 miles in London traffic, including deliberate parking and manoeuvring in confined spaces to exercise steering gear. 20,000 miles general running in England. IMW.{Ivan M. Waller - Head of Chateauroux} During first 10,000 miles of English running car should be periodically washed on underside with high pressure hose and wheels removed. Object:- to get water into pivots etc. Analysis of steering geometry, and friction if excessive. Tests with worn tyres, and on exceptionally bad pot holes. Tests in steadiness under braking. Skid pan analysis. Swdl.{Len H. Swindell} Engine Unit. (a) Run as a unit on test bed 10 hours endurance, 7 hours full throttle, 2 hours ½ load, 1 hour ¼ load. The above at an oil inlet temperature of 100°C. (b) Carry out 50 cycles of cold starts whilst on bed, to reveal weakness in the head construction (if any). (c) 5,000 miles in traffic conditions. (Overoiling etc.) (d) 10,000 miles high speed running on French test. (e) 15,000 miles normal road testing as per experimental Garage. (f) Finally a maximum speed test on Brooklands of 50 miles. The latter will reveal any mechanical weakness partially developed in the previous running. FD.{Frank Dodd - Bodies} etc. 100 hours engine endurance to test bearings, pistons | ||