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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).
On the method for treating B.60 cast iron crankcases to prevent iron particles entering the bearings.

Identifier  ExFiles\Box 123\5\  scan0096
Date  23th September 1938
  
1044

To HPS.{Horace Percy Smith - Experimental Factory Mgr}

Rm{William Robotham - Chief Engineer}/Cwdl.15/JH.23.9.38.

B.60 Crankcase.

We have been informed that the most satisfactory method to avoid trouble due to iron particles getting into the bearings etc. for which cast iron is noted, is to spray with the "Cellonite" grey filler paint after pickling and shot blasting, before any machining is carried out and not after.

Rm{William Robotham - Chief Engineer}/Cwdl.
  
  


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