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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).
Questioning the use of 1% Chromium Steel for front axle yokes due to inferior mechanical properties and safety concerns.

Identifier  ExFiles\Box 114\1\  scan0313
Date  10th May 1940
  
To Rm.{William Robotham - Chief Engineer} from HPS.{Horace Percy Smith - Experimental Factory Mgr}

[Handwritten: +208 1018 FLH]

HPS.{Horace Percy Smith - Experimental Factory Mgr}2/VS.{J. Vickers}10.5.40.

Re: 1% CHROMIUM STEEL.

We are not quite clear as to the reason for using this material in the case of front axle yokes, as it is understood that the mechanical properties are somewhat inferior to those of the present material, S/NCR.

If, therefore, it is a matter of economy, we take it that the question of safety has received due consideration.


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HPS.{Horace Percy Smith - Experimental Factory Mgr} [Signature]
  
  


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