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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).
Technical report discussing issues with filament resistance, horn securing screws, and damage to H.T. wires.

Identifier  ExFiles\Box 168a\4\  img084
Date  19th May 1938
  
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of series to avoid the varying resistance of each filament. This, we think, will require a very large resistance and individual resistances may be more economical.

Horns.
Messrs. Lucas are to be told definitely that we cannot tolerate the constant failure of the securing screws. The countersunk head is apparently insufficient or inaccurate, and continues to come loose.

H.T. Wires.
The damage to the outer covering is largely due to oil from the rocker cover, and a modification to cure this has been instructed.
It is not the Johnson and Phillips Neoprene which is instructed for production.

BY/FB
  
  


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