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 Wellworthy Piston Rings regarding bearing failures, discussing oil types and further engine tests.
| Identifier | ExFiles\Box 115\4\ scan0022 | |
| Date | 30th August 1939 | |
| 1020a SERVICE DEPOTS LONDON 89 BLACKFRIARS R^D S.E.1 TELEPHONE: WATERLOO 5762-3 172 GT. PORTLAND ST.{Capt. P. R. Strong} W.1 TELEPHONE: MUSEUM 2433 119 LEYTONSTONE R^D STRATFORD E.15 TELEPHONE: MARYLAND 1666-7 BIRMINGHAM 143 SUFFOLK STREET TELEPHONE: MIDLAND 0638-9 MANCHESTER 232 DEANSGATE TELEPHONE: BLACKFRIARS 5914 NEWCASTLE MILLICAN'S BUILDINGS, MARKET ST TELEPHONE: 25575-6 ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY, INDIA OFFICE LISTS WELLWORTHY PISTON RINGS LIMITED PISTON & PISTON RING SPECIALISTS LYMINGTON HANTS WORKS & HEAD OFFICE: STANFORD RD SERVICE DEPOTS LIVERPOOL 75 PARADISE STREET TELEPHONE: ROYAL 5786 LEEDS 82 WOODHOUSE LANE TELEPHONE: 25774 CROYDON 246 HIGH STREET TELEPHONE: 6121-2 SOUTHAMPTON 17 PORTWOOD ROAD TELEPHONE: 74778 HULL 285 ANLABY ROAD TELEPHONE: 15312 CANTERBURY 21 & 22 ROSE LANE TELEPHONE: CANTERBURY 2456 DIRECTORS: G.{Mr Griffiths - Chief Accountant / Mr Gnapp} H.{Arthur M. Hanbury - Head Complaints} ALEXANDER J.{Mr Johnson W.M.} W. HOWLETT C. B. KAY P. WALDEN C. W. WATERS A.{Mr Adams} J.{Mr Johnson W.M.} WOOLCOTT OUR REF FB/CJR. Ext.26. TELEPHONE: LYMINGTON 520 (5 LINES) TELEGRAMS: WELLWORTHY CODE: MARCONI YOUR REF 30th August, 1939. W. A.{Mr Adams} Robotham Esq., Messrs. Rolls-Royce, Limited, Derby. Dear Mr. Robotham, In your letter on the subject of bearings which failed at Dennis Bros., you mentioned the point we had put forward that oil was exactly to Dennis' standard practice, but we should qualify this by stating that this only applies to the amount of oil circulated to the bearings and the pressure, that is the pump is a standard pump used with various types of bearings, and the amount of oil circulated compared with other bearings and clearances of bearings which were tried out. I now learn, however, that there was one material difference in that the aluminium bearings were run with Delvac 3 oil. The main feature regarding this oil is to get over rings sticking, and while it is the opinion both of Dennis and for that matter we ourselves confirm also that the oil does do what is claimed for it in this respect, it does appear to have given trouble on bearings, and Dennis are not using it on the engine on which they are carrying out further developments, a but which is fitted for the moment with lead bronze bearings. [Handwritten note: VACUUM] More AC.9 bearings are being fitted this weekend and the tests will be continued. We will keep you informed as to the result of the test, the only change in which will be the oil used. We shall be interested to know whether you have had any experience in the same direction, and whether in your opinion this oil is in any way responsible for the failure. Yours sincerely, FBlackith ROLLS-ROYCE A.{Mr Adams} C. 9. BEARINGS ALUMINIUM CASTINGS LABORATORY TESTING CYLINDER LINERS & LINER CASTINGS | ||