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).
Advantages of a synchronized battery and magneto ignition system over a trembler ignition.
| Identifier | ExFiles\Box 181\M11\ img064 | |
| Date | 1st July 1917 | |
| To Mr. Ellis & EH. from R.{Sir Henry Royce} 3. R2/B10:7:17. present using. Not only would there be a considerable saving in cost, but there should be no troublesome trembler, and the battery and magneto ignitions can be so [handwritten: exactly] beautifully synchronized, which is not the case with any trembler ignition. R.{Sir Henry Royce} | ||