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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).
Requesting the manufacture of six All Helical B.50 gearboxes, specifying ratio configurations and a potential material change for the forks.

Identifier  ExFiles\Box 112\2\  scan0089
Date  17th March 1939
  
828
To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}
Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}9/MH.{M. Huckerby}17.3.39.

ALL HELICAL B.50 GEARBOX.

Rm.{William Robotham - Chief Engineer} has asked you to make six of these boxes and we should like three to have overdrive ratios and three to have standard ratios.

The only departure which we are likely to ask for from the L.O.P. is the use of aluminium bronze forks with cast steel inserts, provided Wheeler says they will make a satisfactory job.

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


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