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 & B.P. Ltd. concerning issues with E.P. lubricants settling when stored.
| Identifier | ExFiles\Box 145\3\ scan0225 | |
| Date | 27th August 1934 | |
| Exptl. Dept. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}10/KW. 27th August, 1934. L.G. Callingham Esq., Messrs. Shell-Mex & B.P. Ltd., Shell Mex House, Victoria Embankment, LONDON, W.C.2. Dear Mr. Callingham, Thank you for your letter of the 31st July. In America I got the impression that the main trouble with these E.P. Lubricants was that they did not retain their characteristics when stored. The point appears to be that the heavy constituents settle down. The trouble did not occur on the Gleason and Timken tests because the lubricants were always stirred thoroughly before insertion in the axle on test. We should like to know whether your latest product suffers from this disadvantage. I am letting you have the maximum tooth pressures of our axles as soon as I can get these together. Yours sincerely, FOR ROLLS-ROYCE LIMITED. | ||