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).
Bump testing Lemoines springs and a recommendation for their use.
| Identifier | ExFiles\Box 41\1\ Scan044 | |
| Date | 6th December 1923 | |
| +3803 BY.{R.W. Bailey - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} Hs{Lord Ernest Hives - Chair}5/LG6.12.23. LEMOINES SPRINGS. We have tested on the Bump Test - 2 front springs supplied by Messrs. Lemoines, France. The O.S. spring broke after 18 hrs. 21 mins. The N.S. after 18 hrs. 53 mins. The average life of a Firths or Woodhead spring is approximately 15 hrs. RHC.{R. H. Coverley - Production Engineer} reports that the alignment of the springs was very good. The brinnel figures are :- N.S. 341 O.S. 388 We would recommend, from the results of these tests, that our Paris Depot be allowed to order replacements springs from Lemoines, Paris. Hs.{Lord Ernest Hives - Chair} | ||