Rolls-Royce Archives
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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).
Sparking plug tests concluding that a misfiring issue was due to the magnetos.

Identifier  ExFiles\Box 162\6\  img153
Date  28th May 1932
  
To Hs.{Lord Ernest Hives - Chair} from Hs{Lord Ernest Hives - Chair}/G.H.Whyman.
a.{Mr Adams} to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Md.

84425.
28.5.32.

REPORT ON SPARKING PLUG TESTS.

Our next test was to remove the earth point from magneto No. 126900, thus cutting out the safety spark gap, and over a run of 65 miles, no misfires of any description occurred.

This proves that our misfiring trouble is definitely due to magnetos, and Mr. West has been informed accordingly.

Hs{Lord Ernest Hives - Chair}/G.H.Whyman.
  
  


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