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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 sheet detailing the test schedule and results for a Watford E06d magneto.

Identifier  ExFiles\Box 48\2\  Scan293
Date  6th July 1925
  
RR 238 (150 BKS.) (BH57. 29-6-20.) MP 324355
X E796
ROLLS-ROYCE LTD.
INSTRUCTIONS.
To: E.F.B.
Date: 6-7-1925
Order No.: WB {Mr Brazier / Mr Bell} 28
Customer's No.: X4181d
Watford E06d magneto NO 82558 with increased air gap between the pole shoes and the sleeves.
This magneto has now been tested to the following schedule:-
1. Inspection and production test
2. Performance on standard annular gap with shunted leak.
3. Open circuit volt and closed circuit ampere speed characteristics.
4. Observations regarding noise and general performance.
This magneto passed the production Test, with the exception of item 7, the minimum regular sparking speeds on 5.5mm gaps
Signed: contd
This Sheet must be filed on completion of the work.
  
  


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