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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).
Failure of Champion LB.9 spark plugs after 719 miles and reverting to K.L.G. plugs.

Identifier  ExFiles\Box 162\3\  img067
Date  1st March 1937
  
6000

Lillie Hall to W.

Rm{William Robotham - Chief Engineer}/Wst.

RC{R. Childs}1/L/1.3.37.

Champion Plugs - LB.9.
- - - - - - - - - - -

I am returning herewith the 6 Champion LB.9 plugs which you sent us.

The above plugs were fitted to B 2 GA and they have covered 719 miles. There was a bad miss and we found that the plug in No 6 cylinder was dead. We are now back on K.L.G. plugs. Straight petrol has been used during this mileage.

RC.{R. Childs}
  
  


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