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).
Chemical leak utility tests for magneto and battery ignition systems.
| Identifier | ExFiles\Box 4\5\ 05-page265 | |
| Date | 5th May 1924 | |
| Y430 EFC. WA.{Mr Wallis}28. 5.5.24. CHEMICAL LEAK FOR UTILITY TESTS ON MAGNETO AND BATTERY IGNITION. After considerable experimental work the ska conductance of the stove has been fixed at a suitable figure. This is (see PB.85) 4 micromhos at a temperature of 200C. As the conductance varies considerably with small changes of temperature, observations were made of the increase in resistance per degree centigrade with a view to arriving at a suitable average figure, for temperature correction. The observations were as follows :- 16°C 3.1 micromhos. 17 3.4 18 3.6 19 3.8 20 4.0 21 4.35 22 4.7 23 5.1 This gives an average variation of conductance per degree Centigrade of .28 micromhos. EFC/HEW. | ||