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).
Test report for a spring, detailing results from a Brinell hardness test on individual leaves.
Identifier | ExFiles\Box 119\2\ scan0118 | |
Date | 7th August 1920 guessed | |
-2- Contd:- Bumper Test. Spring F.4666 - 2324 lbs. BRINELL TEST. Leaves. | Brinell. | Remarks. 1 | 444 | O.K. 2 | 444 | O.K. 3 | 429 | O.K. 4 | 415 | O.K. 5 | 444 | broken centre. 6 | 401 & 415 | " 7 | 444 & 444 | " 8 | 444 & 444 | " " 1/8 9 | 388 | O.K. 10 | 444 | O.K. 11 | 401 | O.K. Run 29 hrs. 5 mins. (1) | ||