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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).
Log of steering arm failures recorded during a bump test.

Identifier  ExFiles\Box 119\2\  scan0199
Date  28th April 1924
  
BUMP TEST. (N.Sch. 1706)
X1331S (crossed out)
28-4-24.
STEERING ARM FAILURES.

TOTAL RUNNING TIME OF TEST.
HRS. MINS.
80 - 49
139 - 0
139 - 0
177 - 0

RUNNING TIME
HRS. MINS.
80 - 49
139 - 0
139 - 0
177 - 0
96 - 11

FAILURES. DESCRIPTION.
Both bolts sheared, which attach near-side cross-steering arm to pivot.
Ball joint loose on near-side cross-steering arm.
Ball joint loose on off-side cross-steering arm.
Near-side cross-steering arm fractured at front bolt hole, also annular dowel sheared.
Rear bolt (G7001A) sheared on near-side cross-steering arm.
WHH
  
  


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