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 | ||