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).
Petrol consumption tests on an F engine with different compression ratios for a long-distance postal machine.
| Identifier | ExFiles\Box 36\2\ scan 175 | |
| Date | 20th August 1928 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to BJ. Wor.{Arthur Wormald - General Works Manager} c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} Fl. ORIGINAL X2934 Hs{Lord Ernest Hives - Chair}3/LG20.8.28. PETROL CONSUMPTION OF F.{Mr Friese} ENGINE 7/1 COMP:RATIO. X2431 X2934 Attached herewith is a curve shewing the minimum consumption we have been able to obtain on a 7/1 engine. We have been asked by the A.M. to repeat the test with 8/1 comp: pistons. We attach copy of anticipated powers and endurance required for long distance Postal Machine. Hs.{Lord Ernest Hives - Chair} | ||