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).
Comparative high and low compression tests conducted on the 1.EX car at Brooklands track.
| Identifier | ExFiles\Box 29\3\ Scan097 | |
| Date | 1st August 1922 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to EF. c. to PN.{Mr Northey} X788 Hs{Lord Ernest Hives - Chair}2/LG9. 8.22. X3763 X788 COMPRESSION TESTS ON BROOKLANDS WITH 1.EX CAR. Herewith the results of comparative tests taken on Brooklands Track with 1.EX Car fitted with high and low compression in each case with a 14-tooth axle. The tests on Brooklands show that a considerable difference can be obtained in the results according to the weather conditions. On one occasion with a strong wind blowing head-on of a straight 1/4 mile, it was impossible to get any reliable figures. The high compression tests, on that portion of the track, came out considerably worse than the low compression. When the high compression tests were taken for the attached report, there was a fair wind blowing against the car on the 1/4 mile straight. The car is going to Brooklands to repeat these tests, with a 15-tooth axle fitted, on Monday next. Hs.{Lord Ernest Hives - Chair} | ||