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).
Comparison of magneto versus battery ignition systems, noting performance differences under various conditions.
| Identifier | ExFiles\Box 34\2\ Scan107 | |
| Date | 15th May 1918 | |
| Contd. -6- EH1/LG15.5.18. best of the charge, we believe there is a greater heat value given out to charge in the "Bosch" type magneto spark than there is in the "snappy" battery ignition spark. Under favourably conditions on the test bench, we get equal power and consumption with either magneto or battery ignition but we feel that under unfavourable conditions in mixture, temperature or sparking plugs, the magneto shews up best. We shall endeavour by tests to prove this. EH. | ||