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).
Graph showing the temperature of various ignition coils over time, taken on a 24 G.VI chassis.
| Identifier | ExFiles\Box 164\5\ img399 | |
| Date | 9th August 1939 | |
| TEMPERATURE OF IGNITION COILS TAKEN ON 24 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} VI Y-AXIS: TEMPERATURE IN C X-AXIS: TIME IN HOURS. LEGEND: (1) 19.A. DELCO REMY FITTED ON STD. BRACKET WITHOUT HEAT RESISTING WASHERS. (2) (AS 1) BUT WITH HEAT RESISTING WASHERS. (3) 2.A. DELCO REMY FITTED AS (1). (4) 19.A. DELCO REMY FITTED WITHOUT HEAT RESISTING WASHERS. BRACKET MOUNTED ON FRAME. 5. LUCAS SPORTS COIL FITTED AS (1). 6. LUCAS SPORTS COIL FITTED AS (2). (7) RR. INJ IN METAL CASE FITTED AS (1). (8) RR. WRAITH TO D 76573 NO. M18 FITTED ON STD. BRACKET & USING GLOWRAY BALLAST RESISTANCE. (9) RR. STD. PH. III TO D 75260 FITTED TO STD. BRACKET & USING NICKEL BALLAST RESISTANCE. (10) (AS 9) BUT USING GLOWRAY BALLAST RESISTANCE. (11) RUNBAKEN OIL FILLED COIL FITTED AS (1). NOTES: DELCO REMY DISTRIBUTOR USED .75 MAKE RATIO MAXIMUM BATTERY VOLTS 15.1 * MISFIRED AT PEAK TEMPERATURES. | ||