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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).
10,000-mile test of a 'V' series car in France, detailing a connecting rod failure.

Identifier  Morton\M3.5\  img042
Date  11th May 1925
  
R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D.

EXPERIMENTAL REPORT.

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} EY.
c. to WOP.

REF. Hs{Lord Ernest Hives - Chair}1/L.G11.5.25.

Expl. No.

10,000 MILES TEST ON 'V' SERIES X 8940
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 200 m.p.g. approximately.

We think it is difficult to judge the connecting rod fork 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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