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).
Testing methods for leaf type springs, comparing greasing versus interleaving material.
| Identifier | ExFiles\Box 80\2\ scan0325 | |
| Date | 7th September 1920 | |
| Contd. -2- Hsl/LG/7.9.20. 1. When greased as they come from the Makers. 2. After having run on a car 1000 miles and are squeaking. 3. When fitted with interleaving material. These tests will be carried out on the sheared end and pre-war thin leaf type springs. We feel even yet with 1.EX Car that we could do with more friction in the rear shock absorbers. We consider that we should continue with our tests with some material similar to Ferodo because it should give us a constant friction in the springs. One of our chief difficulties at present is that some customers are continually greasing their springs, to others never touch them. The interleaving of the springs seems more effective than greasing; most probably due to the fact that the grease is practically immediately squeezed out from the spots where the leaves bed. Hs.{Lord Ernest Hives - Chair} | ||