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).
Front bumper spring test report detailing Brinell hardness and run time.
Identifier | ExFiles\Box 119\2\ scan0128 | |
Date | 4th October 1920 | |
OCT 4 RECEIVED 9.FC. X.1331/ BUMPER TEST - FRONT. X.2628 spring F.4629 - 900 lbs. 10 leaves with nibs anf slots Tie clips, tapered ends. (standard springs) Fitted to N.S. bump chassis 30.8.20 No. of leaves. | Brinell. | Remarks. | Time run. 1 | 461 | Broken 6" from front end. | 20 hrs. 50 mins. 2 | 388 | O.K. 3 | 388 | O.K. 4 | 415 | O.K. 5 | 415 | O.K. 6 | 444 | O.K. 7 | 444 | O.K. 8 | 401 | O.K. 9 | 444 | O.K. 10 | 444 | O.K. Spring Taken off 22.9.20 E.R. 235A 100 T(S).H. 189 1-8-20 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2500 | ||