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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).
Potential economies and improvements for the 25 HP model by adopting Bentley-style components.

Identifier  ExFiles\Box 142\2\  scan0224
Date  19th June 1933
  
H554

To Wor.{Arthur Wormald - General Works Manager} From Hs.{Lord Ernest Hives - Chair}
c. to E.{Mr Elliott - Chief Engineer}
c. to By.{R.W. Bailey - Chief Engineer}

Hs.{Lord Ernest Hives - Chair}1/MJ.19.6.33.

25 HP. MATERIAL.

On the 200 sets of 25 HP. material which have just been ordered we think we might take advantage of one or to economies :-

(1) Marston Type of radiator matrix. This has run 15,000 miles on 18-G4 car in France.

(2) Modifications to crankcase making it similar to the Bentley which does away with the long studs.

(3) Adopt the Bentley size of crankshaft. This will mean that the crankshafts will be interchangeable.

An improvement which we wish to adopt is the spring drive in the clutch. We know on the present 25's there is a general complaint of rattles in the transmission which this will overcome. As this same scheme has been standardised for the Bentley it would appear that we should bring it in on the 25 HP. This arrangement has run 15,000 miles on 18-G4. in France.

Hs.{Lord Ernest Hives - Chair}
  
  


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