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 results for engine coil temperatures under different ignition conditions.

Identifier  ExFiles\Box 69\1\  scan0163
Date  1st December 1924
  
ROLLS-ROYCE LTD.
INSTRUCTIONS.
(4)
To_____________________19__
Order No. WD{Mr Wood/Mr Whitehead}15 (cont'd)
Customer's No.
Coil temperature after running the engine 30 mins on magneto
Primary winding - 64°C.
Secondary winding - 68°C.
Coil temperature after running engine on battery ignition for 1 hour.
Primary winding - 130°C.
Secondary winding - 106°C.
Test 2. 20 H.P. chassis 1063 with standard coil, car running on road.
Coil temperature after running engine 30 mins on magneto.
Primary winding 49°C.
Secondary winding 52°C.
Signed (contd)
This Sheet must be filed on completion of the work.
RR 238 (150 BKS.) (OB 461-8 12.24) MP 306975
  
  


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