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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).
Modifications to the Phantom's aluminium engine for lighter weight and increased horsepower.

Identifier  ExFiles\Box 67\4\  scan0044
Date  11th April 1926
  
To EH Hs.{Lord Ernest Hives - Chair} } FROM R.{Sir Henry Royce}
BY.{R.W. Bailey - Chief Engineer} AJS. } LE CANADELHenry Royce's French residence.

c. to BJ. Wor.{Arthur Wormald - General Works Manager}
c. to RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design}

X8430

R1/M11.4.26.

PHANTOM - ALUMINIUM ENGINE. LIGHTER. X.8070 X.8300
INCREASED HP. ETC. X.8430 X.8840

This seems quite ready to be put in hand to Mr.
Elliott's LeC.2229, and to his other lightening suggestions
in E2/M1.4.26. Don't however do anything that looks as
if it might prove troublesome in quantity production.

What do we hope from this increased cost -

(1) Better riding and steering.

(2) Greater speed of acceleration and hill climbing,
or permitting slightly higher gear (avoid 14-tooth
axle.)

(3) Less detonations, permitting higher compression
which will take place by better filling.

Can we not have a better induction system, profiting
by some recent knowledge?

Has Mr. Stent got his still further lightening of
the clutch and flywheel ready: we want at least 25%.

I do not think we ought to worry with LeC.2230 -
at present rather ultra.


R.{Sir Henry Royce}
  
  


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