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).
Report page on a vehicle breakdown, comparing magneto and battery ignition systems and concluding with a recommendation.
| Identifier | ExFiles\Box 21\4\ Scan105 | |
| Date | 1st July 1922 guessed | |
| (2) of magneto armature was hopelessly broken down - I put the car in a farm shed and came home on a Ford, a lesson to be burnt from a master. (1) If this is a specimen of Delage effort to cut out RR. it is not a bit like a RR. (2) Double spark magnetos which naturally requires double the difference of KBP are not reliable and need a higher speed for starting. (3) I should prefer battery ignition for investigation to magnetos if only one ignition is fitted. (4) The advantage of 2 separate ignitions (one being battery, for starting,) is in investigation in case of fault - because if the engine fails one can tell at once if it is faulty ignition or carburation. When the engine stopped I felt hopelessly lost for a few minutes as to how to find the cause (through absence of battery ignition, and bad starter motor) and I had not had a hopeless stop since about 1906. REPAIR AND SELL THE ROTTER. R.{Sir Henry Royce} [Handwritten notes in left margin:] X.9199 X.7-29 87c. | ||