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 the Vacuum Oil Company regarding the type of grease used for propeller shaft sliding joints.
| Identifier | ExFiles\Box 145\1\ scan0187 | |
| Date | 23th March 1937 | |
| 1229. Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}5/R.{Sir Henry Royce} 23rd March, 1937. O.T. Jones, Esq., Vacuum Oil Company Limited, Caxton House, Westminster, S.W.1. Dear Mr. Jones, Thank you for your letter of the 22nd. There is no provision on our cars whereby the customer can lubricate the propeller shaft sliding joint. It is filled with grease at the Works, and will run at least 20,000 miles without attention. About a year ago, for some time we used Mobil Grease No.2 in this joint, but found it to be too fluid for the purpose as it escaped rather easily. We are now using a heavier grease, and are not having any trouble. Yours sincerely, | ||