Rolls-Royce Archives
         « Prev  Box Series  Next »        

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, failures observed over time, and subsequent Brinell hardness tests on a broken spring.

Identifier  ExFiles\Box 119\2\  scan0116
Date  24th June 1920
  
EFc
X.1331 BUMPER TEST. X. 3981
File
Spring with 12 leaves O.S. F.4666 - 2000 lbs.
N.S. F.4665 - 2226 lbs.

Date. | Total hrs. | Remarks.
--------------------------------------------------------------------------------------------------
24.6.20 | |
25.6.20. | 7 hrs.45 mins. | Bolt and cap K.419 broken O.S. centre main bearing bracket.
26.6.20 | |
28.6.20. | |
29.6.20 | |
30.6.20. | |
1.7.20 | 35 hrs.40 mins. | Bolt broken centre main bearing bracket O.S. K.419.
1.7.20 | 36 " 45 " | leaf [handwritten annotation] Bottom leaf O.S1 broken 5" from rolled eye. Front diagonal stay broken close to cross member.

BRINELL TESTS OF BROKEN SPRING.

1st. | 415 | O.K.
2 | 444 | "
3 | 495 | "
4 | 495 | "
5 | 444 | "
6 | 461 | "
7 | 461 | "
8 | 415 | "
9 | 444 | "
10 | 444 | "
11 | 415 | "
12 | 444 & 388 where broken.

[Stamp]
E C
JUL 19
RECEIVED.
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙