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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).
Road spring specifications for the 25-EX American chassis.

Identifier  ExFiles\Box 43\2\  Scan271
Date  24th January 1931
  
To BY.{R.W. Bailey - Chief Engineer} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} 83900 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}1/MJ. 24.1.31.

ROAD SPRINGS FOR AMERICAN CHASSIS.

We consider that the road springs fitted to 25-EX. at the present time are a very reasonable compromise. They are as follows :-
Rear. Initial camber 10.25" Loaded camber flat.
Poundage 1320.
Front. Initial camber 4¼". Loaded camber flat.
Poundage 1100.
The weight of 25-EX. is 1 ton 1 cwt. 2 qrs. 14 lbs. at the front and 1 ton 7 cwt. 0qrs. 14 lbs. at the rear.

Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}
  
  


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