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).
Test report on a magneto, concluding the unit is OK and suspecting faulty timing as the cause of a customer-reported failure.

Identifier  ExFiles\Box 47\4\  Scan097
Date  29th June 1920
  
ROLLS-ROYCE LTD.
INSTRUCTIONS.

SS{S. Smith} 218 (150 BKS.) (H57.29-6-20.) MP 224355

To

19

Order No. WA{Mr Wallis} 102 (2)
Customer's No.

discharging at 4.5 mm gap.
Throughout the whole of this run the H.T. spark-ing was regular and the magneto exhibited no suspicion of failure.
No further test has been carried out the magneto being considered OK.
We cannot understand why the magneto should fail so abruptly as reported by the customer, it is probably another case of faulty timing.

Signed

This Sheet must be filed on completion of the work.
  
  


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