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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).
Recommendation to increase clearance in the stud holes for the 20 HP exhaust manifold following breakage due to restricted movement.

Identifier  ExFiles\Box 6\7\  07-page052
Date  17th June 1929
  
Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer}
C. to Sg.{Arthur F. Sidgreaves - MD}
By.{R.W. Bailey - Chief Engineer}

X5220.

E2/17.6.29.

Re 20 HP. EXHAUST MANIFOLD.

We conclude from GWH{George W. Hancock - Head Chateauroux}/13.6.29 that the exhaust pipe broke from restricted movement rather than the load due to sliding, and recommend still more clearance in the stud holes.

E.{Mr Elliott - Chief Engineer}
  
  


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