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).
Road test report on Delco-Remy high-put coils, measuring resistance and temperature under different conditions.
| Identifier | ExFiles\Box 164\5\ img379 | |
| Date | 13th August 1938 | |
| -2- DELCO REMY & HYATT LTD. Rm{William Robotham - Chief Engineer}/RC.{R. Childs}9/JH.13.8.38. ROAD TEST ON 24.G.VI. DELCO-REMY HIGH-PUT COIL No.19.A. Test taken without the use of heat resistance washers. Working voltage during test 15. TIME. | RESISTANCE OF PRIMARY. | TEMPERATURE OF PRIMARY. 0 - 30 | 4.5 | 151°C. 1 - 0 | 4.75 | 171°C. 1 - 15 | 4.85 | 179°C. 1 - 30 | 4.85 | 179°C. Test repeated using the heat resisting washers. TIME. | RESISTANCE OF PRIMARY | TEMPERATURE OF WINDING. 0 - 30 | 4.74 | 170.5°C. 1 - 0 | 4.82 | 177°C. 1 - 15 | 4.91 | 184°C. 1 - 30 | 4.91 | 184°C. Test repeated on another make of coil. TIME. | RESISTANCE OF WINDING. | TEMPERATURE OF WINDINGS. 0 - 30 | | 84°C. 1 - 0 | | 106°C. 1 - 15 | | 106.5°C. 1 - 25 | | 106°C. Crank-case temperature during test attained a maximum in 1 hr. 15 min., & at which time it was 79°C. Bm/RC.{R. Childs} | ||