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).
Bumper test report for an 11-leaf spring, showing Brinell hardness and failure results.

Identifier  ExFiles\Box 119\2\  scan0138
Date  23th December 1920
  
RFE
X.1331
Filed 23 12 20 file

X.1331 - BUMPER TEST.

F.4630 - Spring consiting of 11 leaves, with tapered ends, nibs, slots and tie clips. Lbs. 950. Fitted to N.S. Bump chassis 5.11.20.

No. of leaves. | Brinell. | Remarks. | Time run.
---|---|---|---
1 | 415 | O.K. |
2 | 444 | O.K. |
3 | 415 | O.K. |
4 | 477 | Broken in centre. |
5 | 444 | O.K. |
6 | 161 | O.K. | 13 hrs. 35 mins.
7 | 444 | O.K. |
8 | 415 | O.K. |
9 | 429 | O.K. |
10 | 477 | Broken in centre. |
11 | 388 | " " " |

E F O
DEC 16
RECEIVED
  
  


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