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).
The cost and performance benefits of synchronised battery and magneto ignitions over trembler ignitions.
| Identifier | ExFiles\Box 34\1\ Scan009 | |
| Date | 10th July 1917 | |
| Contd. -3- R2/B10.7.17. at present using. Not only would there be a considerable saving in cost, but there would be no troublesome trembler, and the battery and magneto ignitions can be exactly synchronised, which is not the case with any trembler ignition. R.{Sir Henry Royce} | ||