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).
Requesting a newly standardised ballast resistance be fitted to chassis 22-EX for a 10,000-mile ignition system test.

Identifier  ExFiles\Box 168a\5\  img043
Date  19th February 1929
  
To RHC.{R. H. Coverley - Production Engineer} from EFC.
c. to Hs{Lord Ernest Hives - Chair}/AJL.
X 7720
EFC5/LG19.2.29.
We hand you herewith a ballast resistance of the type just standardised, being 1½ value as compared with present standard double value ballast.
Will you please have this fitted to 22-EX to bring the ignition system up to date for the 10,000 miles test.
Kindly return to us the ballast which will be removed from that chassis.
EFC.
  
  


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