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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).
Instruction regarding the specifications and performance of magnetos with tungsten points.

Identifier  ExFiles\Box 65\3\  scan0218
Date  8th December 1924
  
RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975

ROLLS-ROYCE LTD.
INSTRUCTIONS.

To 3

Order No.
Customer's No.

19

points but with careful arrangement of magnet size and armature winding & not forgetting the condenser, a suitable ratio of I/K can be arrived at which will suit the tungsten contacts.
Lucas magnetos with tungsten points just manage to pass our specification and will probably be still more improved upon.
We are always willing to give them any technical advice, which in our opinion they sorely need, to help them to give us the best magneto both for noise and electrical performance.

Signed H E.W.

This Sheet must be filed on completion of the work.
  
  


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