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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).
Proposal for a temporary change to a double head battery ignition system, citing reduced maintenance and noise.

Identifier  ExFiles\Box 53\3\  Scan128
Date  15th September 1927
  
Oy18-E-91327
-2-
September 15, 1927

We propose this change as a temporary step. Undoubtedly the only satisfactory method of tackling the ignition is to produce it ourselves, as done at Derby.

To do this we propose to build a double head battery ignition with oil relay advance, using Phantom parts as far as possible.

We do not propose to adopt the magneto, because our experience here has shown a great reduction in Maintenance cost and trouble on electrical ignition since the magneto was discontinued. Further, the magneto is responsible for a great deal of noise which is avoided by the use of battery ignition.

We suggest, however, that if Mr. Royce considers that a standby ignition is essential we should sent the details necessary to carry out the scheme, as on the 20 HP, so that the magneto is only running when required.

In any case we propose to submit prints of the experimental scheme for the Rolls-Royce double ignition as soon as we have completed them.

[STAMP] COPY

Yours very truly,

MO/E
  
  


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