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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).
Trial of K.L.G. F.50.X sparking plugs on a Phantom III unit due to pre-ignition issues.

Identifier  ExFiles\Box 162\5\  img045
Date  24th August 1937
  
To Rm.{William Robotham - Chief Engineer}
c. to Rm{William Robotham - Chief Engineer}/JE.

6001

Rm{William Robotham - Chief Engineer}/RC.{R. Childs}9/JH.24.8.37.

M

re K.L.G. F.50.X. Sparking Plugs.

We have handed to Rm{William Robotham - Chief Engineer}/JE. one dozen K.L.G. sparking plugs for trial in the exhaust side of Phantom III unit No.6. This plug has a shorter reach and also a higher heat factor than the standard FF.30X. We understand that the existing standard plugs in the exhaust side were giving trouble due to pre-ignition.

Rm{William Robotham - Chief Engineer}/RC.{R. Childs}
  
  


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