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).
Comparison of primary ignition voltage curves for a Wraith model, comparing the company's own distributor with a Delco-Remy distributor at different RPMs.
| Identifier | ExFiles\Box 164\5\ img423 | |
| Date | 5th April 1939 | |
| WRAITH IGNITION PRIMARY VOLTAGE CURVES ROLLS ROYCE DISTRIBUTOR 400 R.P.M. ROLLS ROYCE DISTRIBUTOR 650 R.P.M. DELCO - REMY DISTRIBUTOR 400 R.P.M. DELCO - REMY DISTRIBUTOR 650 R.P.M. 100 0 -100 V.C.H.6 S.G.L. 5 4 39 | ||