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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).
Improvements for a sports car, including strengthening the crankchamber, simplifying the engine, and a new carburetter design.

Identifier  ExFiles\Box 65a\1\  scan0154
Date  17th October 1927
  
Hs.{Lord Ernest Hives - Chair}
BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce}
c. to BJ. Wor.{Arthur Wormald - General Works Manager} SG.{Arthur F. Sidgreaves - MD}

X7770

R1/M17.10.27.

X.8774
X.8940b
X.8000

SPORTS CAR AND NEXT 10,000 MILES IN FRANCE.

It is agreed to make present chassis with all improvements except those dependent on the new crankchamber, so as to get the first few sports cars moving. To do this wants a new piston 3/8" longer - (LeC.drg. to follow.)

The crankchamber should be strengthened at once at the point where it cracked (see LeC.drg. to follow.)

All the modifications possible to lighten and simplify the engine, clutch, and chassis should be incorporated at once.

It is thought possible that the improved crankchamber etc. will be ready before any number (i.e. more than 10) of the sports cars are due for delivery, so that the above is only a very temporary measure to get a specimen sports car at the Riviera this season.

It is understood that Derby have cast iron cyl. block suitable for the existing original alum. head. If not started I should go on with the dry liner block.

We are short of the autovac feed for continuous running at full throttle: we are looking into what can be done for this.

We are trying to design an expanding straight through carburetter.

R.{Sir Henry Royce}
  
  


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