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 discussing vehicle performance regarding fuel consumption, engine detonation, and tyre wear.
| Identifier | ExFiles\Box 89\1\ scan0271 | |
| Date | 3rd October 1939 | |
| TELEGRAMS: SUMMERS, CHESTER. TELEPHONE: 200 CONNAH'S QUAY (10 LINES). 261ss{S. Smith} c CODES USED: BENTLEY'S, BENTLEY'S 2ND PHRASE. A.B.C. 5TH (5 LETTER) EDITION. MARCONI INTERNATIONAL. WESTERN UNION. BIRCHWOOD'S. LIEBER'S. JOHN SUMMERS & SONS, LIMITED. ESTABLISHED 1851. MANUFACTURERS OF GALVANIZED CORRUGATED AND PLAIN STEEL SHEETS, BLACK SHEETS AND HIGH GRADE SHEETS FOR ALL PURPOSES LONDON OFFICE: 34, LIME STREET, E.C. GLOBE IRON WORKS, STALYBRIDGE. BIRMINGHAM OFFICE: EXCHANGE BUILDINGS. ALL QUOTATIONS UNLESS OTHERWISE STATED ARE SUBJECT TO REPLY BY RETURN OF POST YOUR REF. ....................... Our REF. ....................... Hawarden Bridge Steel Works, Shotton, Chester 3rd October, 1939. W.A. Robotham Esq., Rolls Royce Ltd., D E R B Y . Dear Bill, Thank you for your letter in which you tell me how to get more miles per gallon. I will try the modifications to the carburetter first, as I think on pool petrol there would be a good deal of detonation if I was to advance the ignition. Yesterday I did a run to Harrogate and back of about 200 miles without any alterations, and the consumption was 17 miles to the gallon. Geoffrey claims to be doing 23 on his, but I find it a little difficult to believe. I have not been very successful with the Avon tyres. The back were quite smooth after 2,500, and the front, although they still had quite a lot of tread left, were showing signs of heel and toe wear. I also found that there was more kicking on the steering with Avons than | ||