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 testing and issues found with the Goshawk II magneto ignition system.
| Identifier | WestWitteringFiles\I\October1922\ Scan41 | |
| Date | 4th October 1922 | |
| ORIGINAL He5/T4.10.22. ------------- To R.{Sir Henry Royce} from Ms. c. to C.J. c. to E.{Mr Elliott - Chief Engineer} c. to De. c. to By.{R.W. Bailey - Chief Engineer} RE GOSHAWK II- MAGNETO IGNITION. We have been running one of these cars fitted with the Watford magneto. Tests on the dynamometer show the M.P. to be the same on magneto as on battery ignition. In order to obtain satisfactory results from the magneto, it is, however, necessary to be continually adjusting the ignition lever to obtain maximum power and to avoid detonation. On the road the car is less convenient to drive with the magneto than with the battery ignition. We find, however, that the slow running with the E.C.6 Watford magneto is very good, and it is difficult to tell any difference under that condition between magneto and battery. When the magneto is fitted it is necessary to take it off its bracket in order to adjust the tappets on the three rear cylinders. This we consider is a serious disadvantage, especially as when the magneto is removed care must be taken to see that the timing is put back correctly. We strongly recommend that the serrated joint on the magneto should have one odd serration, so that it can only be erected in one position. The Vernier adjustment for the magneto could be obtained between the serrated joints each end of the dynamo. This would enable the magneto to be | ||