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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).
Instructions for bench tests on Scintilla magnetos type AM6A.

Identifier  ExFiles\Box 48\2\  Scan140
Date  16th July 1924
  
ROLLS-ROYCE LTD.
INSTRUCTIONS.
X.8795
To E.Y.B.
Date 16-7-1924
Order No. W.A.64
Customer's No. X.4187
Bench tests on Scintilla magnetos
type AM6A (negative rotation)
NOS 28531 and 28533.
Tests, partly to our new specification and to the general test, have been carried out on the above magnetos and the results are tabulated as follows:-
NO. 28531.
I. Safety-gap 11.1mm.
II. Primary-gap .012"
III. Endurance test (7 hrs at 2000 rpm)
During this test the magneto functioned quite OK and upon examination afterwards everything appeared to be working satisfactory. H.T. carbon brushes seem rather soft.
Signed
contd...
This Sheet must be filed on completion of the work.
RR 238(150 BKS)SHST.29-6-20.) MP 324356
  
  


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