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 Ethyl Export Corporation regarding the examination of six 850 plugs suspected of causing misfiring.
| Identifier | ExFiles\Box 150\1\ scan0179 | |
| Date | 29th August 1936 | |
| CABLEGRAMS: ETHYLPORT, LONDON. TELEGRAMS: ETHYLPORT, SOWEST. ETHYL EXPORT CORPORATION Incorporated in the State of Delaware, U. S. A.{Mr Adams} with limited liability. THAMES HOUSE, MILLBANK LONDON, S.W.1 Telephone: VICTORIA 1441 Head Office: 135 EAST 42ND STREET NEW YORK, U.S.A 29th August, 1936. H.{Arthur M. Hanbury - Head Complaints} E.{Mr Elliott - Chief Engineer} West Esq., Experimental Department, Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. Dear West, I am sending you herewith a report on the examination of the six 850 plugs which you sent us with your letter of the 7th August. A comprehensive examination has been made, and I honestly do not think that the plugs themselves were in any way at fault, and I think it is certainly quite definite that the lead deposits could not have caused the misfiring. You will appreciate that we are rather handicapped by not having complete details of the operating conditions under which the plugs were run, so I think that you yourself should be in a better position to actually determine the source of trouble with consideration of the facts which have been found in the laboratory examination. I myself would be quite pleased to discuss this matter further with you if you are interested, but as I have to go away I will not be able to come up to Derby before the 10th September. I am returning the six used plugs to you under separate cover, that one which is tightly assembled being plug No.6 on the report. I am also returning the three new plugs, and that which is loosely assembled has been subjected to break down voltage, but as the failure occurred inside the mica I do not think that any damage has been done to it. Yours very truly, Hrossell HF{H. W. Frost - Coachwork Inspector}/BB | ||