Rolls-Royce Archives
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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)
  
  


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