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).
Car's fuel consumption performance and mixture control operation.
| Identifier | ExFiles\Box 66a\4\ scan0060 | |
| Date | 20th June 1921 | |
| X3430 CJ. from Hs.{Lord Ernest Hives - Chair} X3430 X3056 CONSUMPTION. Hs{Lord Ernest Hives - Chair}1/LG20.6.21. Referring to your CJ13/E15.6.21 and letter from Mr. A.{Mr Adams} E.{Mr Elliott - Chief Engineer} Claremont attached. We consider that 14 miles per gallon is a creditable performance for a complete car. The test referred to would be made with the mixture control lever in the normal position. Better economy would be obtained if the mixture control was intelligently operated. Hs.{Lord Ernest Hives - Chair} | ||