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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).
Removal, modification, and trial of B.60 cylinder heads.

Identifier  ExFiles\Box 124\1\  scan0194
Date  7th July 1939
  
1044

To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}
c. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}

Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby}7.7.39.

B.60 CYLINDER HEADS.

In order to keep your records up to date the Ex.1383/4 cylinder head has been removed from the test bed unit (No.3) and fitted to J.B.50 for confirmation of the results obtained on the bed.

The sloping valve head (EB.4706) has been removed from J.B.50 and is now in the shop.

Will you please carry out the following modification on this cylinder head, after which it should be fitted to B.60 No.3 unit on the bed for further trial.

The modification required is to EXS.1804. Originally we instructed the modification EXS.1769 to this same head, but owing to requiring a special tool this was not carried out, we wish, however, to try out EXS.1804 modification first.

Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}
  
  


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