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).
Oscillograph work for the Wraith ignition system.
| Identifier | ExFiles\Box 168\3\ img148 | |
| Date | 19th April 1939 | |
| R.R. 30M. ST.{Capt. P. R. Strong} 74907/4/11/38 C.E. 6119 EXPERIMENTAL DEPARTMENT REPORT. REFERENCE:- Lr{Mr Ellor}/HWS/SQL.7/WJ.19.4.39. Subject of Report:- OSCILLOGRAPH WORK ON WRAITH IGNITION. General Conclusion:- Oscillograph records have been taken in order to make a comparison between the Rolls-Royce and Delco-Remy distributors, and an experimental distributor with a commutator type contact breaker. There is little difference in the secondary current and voltage for the Rolls-Royce and Delco distributors. There is a sign of a slightly irregular break on one of the records with the R.R. distributor at 650 RPM. This may be the cause of occasional misfiring, as it would produce a loss of spark energy. The commutator distributor gave a very poor break, which would result in a low spark energy. ------------------ Lr{Mr Ellor}/HWS/SQL. Copies of Report Circulated to:- Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}/Ro.{C. C. Rose - Export Manager} By.{R.W. Bailey - Chief Engineer} Report to be noted for further action by:- Test carried out on:- Electrical Laboratory. By:- Lr{Mr Ellor}/HWS/SQL. Test No. Date:- | ||