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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 specification and cost change for 20 HP Brake Drum Pressings.

Identifier  ExFiles\Box 5\3\  03-page081
Date  10th August 1923
  
BY.{R.W. Bailey - Chief Engineer} from ROY.{Sir Henry Royce}
c. to Hor.
c. to HS.{Lord Ernest Hives - Chair}

X4257

ROY{Sir Henry Royce}9/1010.8.23

4257

As discussed just before the Holiday, Messrs. Braime are proceeding with the manufacture of 20 HP. Brake Drum Pressings for Chassis 751 and onwards in .6 Carbon Steel, at a cost of some 6/- extra per Chassis, but point out they are expecting difficulties in the pressing of such Drums, and want us to agree they may use material 1/32" thicker than previously, and so avoid the possibility of the Drums being under our finished requirements at any point, and also allow a proper pressing margin in view of the difficulties they expect with the harder material. Is there any objection?

ROY.{Sir Henry Royce}
  
  


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