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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).
Material for Wraith Rear Axle Half Shafts, recommending a higher quality material to prevent failures.

Identifier  ExFiles\Box 7\3\  X 602 Axle Rear-page30
Date  1st December 1936
  
To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}
c. to E.{Mr Elliott - Chief Engineer}
c. to Eu.

L04A
602

Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}6/AP.1.12.36.

Wraith Rear Axle Half Shafts

The present detail drawings of these parts call for S/NCR. material. The half shafts on our existing axles are made of S/2NCR and in one or two cases on the Bentley have failed. We consider that the Wraith half shafts should also be made in this better material, as we think that shafts in S/NCR, although cheaper, are likely to fail in customers' hands.

Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}
  
  


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