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).
Letter to Shell-Mex Ltd. requesting anti-knock values and Ricardo's figures for 'Racing Shell' petrol.
| Identifier | ExFiles\Box 20\4\ Scan054 | |
| Date | 1st March 1930 | |
| 8976. Expl. Dept. Hs.{Lord Ernest Hives - Chair}3/MJ. March 1st.1930. Messrs. Shell-Mex Ltd., Shell Corner, Kingsway, LONDON. W.C.2. Dear Sirs, You have kindly sent us a 50 gallon drum of "Racing Shell" petrol. This was arranged through our London office with your Mr. Callingham. We should be glad if you could let us know the anti-knock value of this fuel compared with Shell Aviation and Benzol. Do you, for instance, consider it has a better anti-knock value than standard Air Ministry fuel 80/20 mixture. If you could let us have any Ricardo's figures for the H.U.C.R. value we should be very grateful. Yours faithfully, For Rolls-Royce Ltd. | ||