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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).
Cost implications of standardizing the solid key type bottom tappet.

Identifier  ExFiles\Box 171\1\  img055
Date  5th October 1923
  
To Hs{Lord Ernest Hives - Chair} from Hy{Tom Haldenby - Plant Engineer}/Rb.{R. Bowen}

Hy{Tom Haldenby - Plant Engineer}/Rb.{R. Bowen}13/N/139A/BJ.5.10.23.

Standardisation of Chassis Parts
Sheet X.No.8030/7030.

Solid Key Type Bottom Tappet.

Returned herewith above standardisation sheet.
You will note we estimate no difference in cost because the extra cost of the new Tappets counterbalance the saving in dismantling cost necessary to quieten the old tappets.

OH

Hy{Tom Haldenby - Plant Engineer}/Rb.{R. Bowen}
  
  


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