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).
Proposing a hill test to compare the performance of two different exhaust systems on a car.
| Identifier | ExFiles\Box 71\3\ scan0312 | |
| Date | 4th September 1925 | |
| X8950 TO Hs{Lord Ernest Hives - Chair} FROM BJ BJ3/DN4.9.25. 103-MC. With reference to Hs{Lord Ernest Hives - Chair}6/LG2.9.25, I attach copy of Cx{Major Len W. Cox - Advertising Manager}2/CM3.9.25. Perhaps under the circumstances you would like to make a test on some hills with the two exhaust systems alternately on the same car, to ascertain whether on hills of different grades, the speed is exactly the same whichever exhaust is used. B.J. | ||