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 from H.M. Hobson Ltd. discussing the probable cause of an excessive over-night loss, attributing it to insufficient air pumping.
| Identifier | ExFiles\Box 44\3\ Scan015 | |
| Date | 24th September 1928 | |
| CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, AIR MINISTRY AND TO THE DOMINION & FOREIGN GOVERNMENTS. PLEASE ADDRESS ALL COMMUNICATIONS TO THE FIRM, NOT TO INDIVIDUALS. x4038 TELEPHONE: CHISWICK 4231. (4 LINES). TELEGRAMS: "ASSEMBLAGE, LONDON". H.M. HOBSON, LTD. MANUFACTURERS OF: Hobson K-S Petrol Telegage AND MOTOR ACCESSORIES. WORKS: LONDON AND WOLVERHAMPTON. 47-55, ACTON VALE, LONDON, W.3. 24th September, 1928. OUR REF. TPS/AML YOUR REF. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG. Messrs. Rolls-Royce Ltd., Derby. For attention of Mr. Robotham. Dear Sirs, We beg to thank you for your telegram of the 21st inst., giving us information with regard to the over-night loss, as arranged. As you will probably realise, this telegram was received after the writer had left the office on Friday; otherwise we would have replied by an earlier post. Our conclusion, up to the moment, is that the excessive over-night loss which you have been experiencing is probably due to the air pumping under certain conditions not being sufficiently vigorous, and under these conditions of running, with a not constantly fully corrected unit, excessive over-night losses have been experienced. These losses would probably not have amounted to more than two | ||