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).
List of six advantages of a dual battery ignition system over a magneto.
| Identifier | ExFiles\Box 61b\4\ scan0186 | |
| Date | 9th June 1932 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wst.2/KT.9.6.32. For reference we state below the six leading advantages of a dual battery ignition system over the magneto. (a) Deletion of the complicated and expensive interconnected oil relay system of advance and retard which is necessary to synchronise the magneto timing with the battery ignition. (b) Better scope for advance and retard, the battery spark not varying in intensity with any position of the lever. (c) No possibility of back firing on starting up due to ignition. (d) Better synchronisation of the two ignitions. (e) Misfires on the pick up can more easily be eliminated without reducing the plug gap and spoiling the idling performance. (f) Considerable saving in cost. We should be glad if the matter could be given still further consideration in view of the present trouble with magneto, on production chassis. Hs{Lord Ernest Hives - Chair}/Wst. | ||