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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).
The examination of Goshawk 11, detailing a cracked induction pipe and performance after its replacement.

Identifier  ExFiles\Box 50\3\  Scan192
Date  12th September 1921
  
Y4305

To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}
c. to CJ.
c. to E.{Mr Elliott - Chief Engineer}
c. to Da.{Bernard Day - Chassis Design}
c. to EY.
c. to Wor.{Arthur Wormald - General Works Manager}
c. to RF.

COPY.

HSB/LG12.9.21.

X.4219 - GOSHAWK 11. Y4305

On examining Goshawk 11. after the run to Chichester and back, we found that the induction pipe was cracked. It was a semi-circular crack in the radius where the hot spot joins the induction pipe. It appears as though we have got to allow for expansion at this point. In fitting up the other pipe we are allowing considerably more clearance in the holes. We have tried the engine since replacing the pipe, and find that the slowrunning is very much better and more regular than it was when the car was at W.W.

The consumption on the run back was 21 M.P.G. The average speed for 190 miles was 33 M.P.H. We covered 40 miles from Oxford to Daventry in one hour. The average speed of this journey is the same as we do on the 40/50 chassis on this run.

Hs.{Lord Ernest Hives - Chair}

[Faint reversed stamp: MADE AT CHORLEY]
[Footer text, upside down]: R.R. 222A 100 T(S. H.{Arthur M. Hanbury - Head Complaints}) 738. 10-12-20. (c) 1947
  
  


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