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).
Methods to protect and lubricate car springs to reduce noise and friction.
| Identifier | ExFiles\Box 154a\4\ scan0175 | |
| Date | 9th September 1920 | |
| S.E. 132(a) 100 T: (S.H. 159, 11-8-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 Contd. -2- R5/G3.9.20. of grease-proof tape, and over this fit the leather stocking lately suggested, or bind the spring neatly with cord, securely fixing the beginning and finishing ends. I shall be glad if you will do this on some of the cars you are running at the works, and if you find it practical, send the materials and a man, so that I can have it on 1.EX I was rather pleased to find that the noise is not caused by horizontal movement or pressure, but it is entirely due to vertical loading, friction, and movement. The solid clip seems to have the disadvnatage that the plates cannot be opened to grease, whereas with the older clip the bolt could ne removed and the spring blades opened. R. {Sir Henry Royce} writing P.S. Since writing the above, I have thought that it would seem possible to house the rear spring in a metal cell so that it could be almost entirely protected from water, and couldl be wrapped with fabric saturated in oil, which would lubricate it almost forever. Could you try this, there is already an inner valance, it should only need an outer one. R. {Sir Henry Royce} | ||