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).
Standardization of spark plugs for Phantom cars.

Identifier  ExFiles\Box 162\6\  img092
Date  1st November 1925
  
To BJ. from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}
c. to EF.
c. to HY.{Tom Haldenby - Plant Engineer}
+4428
Hs.{Lord Ernest Hives - Chair} absent.
Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LGG.11.25.

SPARKING PLUGS. +8970

With reference to BJ1/H4.11.25 and EF4/H3.11.25.
We understand that at the moment all Phantom cars are being delivered with detachable Lodge plugs. We have been unable to detect any difference between these and the non-detachable type as regards pre-ignition and durability.
We are completing a series of tests on other types of detachable plug with a view to determining the best make for standardisation.

Hs{Lord Ernest Hives - Chair}/W.A.Robotham.
  
  


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