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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).
Connecting rod failure during a 10,000-mile test on a 'V' series car in France.

Identifier  ExFiles\Box 71\4\  scan0197
Date  11th May 1925
  
R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D.

X8940

EXPERIMENTAL REPORT.

Expl. No.

REF Hs{Lord Ernest Hives - Chair}1/LG11.5.25.

To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair}
c. to CJ. BJ.
c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer}
c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer}
c. to Wor.{Arthur Wormald - General Works Manager}

10,000 MILES TEST ON 'V' SERIES CAR IN FRANCE.

Attached is a further report on 93-NK car which is running in France.

As regards the failure of a further connecting rod; we have sent another set of rods and pistons to be fitted to that car. The pistons were tested on a car here and the oil consumption was 900 m.p.g. approximately.

We think it is difficult to judge the connecting rod bearing failure until we have reasonable oil consumption. The rod which has failed is one which has been on the engine the whole time. It is not one of those which was fitted when the previous failure occurred after 5,000 miles running.

Hs.{Lord Ernest Hives - Chair}
  
  


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