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).
Goshawk engine battery and magneto ignition diagram graph.
| Identifier | ExFiles\Box 54\5\ Scan251 | |
| Date | 1st November 1933 | |
| X3485 Battery Ignition advance (Fully advanced automatically) Advance allowed by rotor blade (Full automatic retard) Magneto Advance Battery Ignition advance (Fully retarded automatically) Retard Advance Ignition Lever Travel GOSHAWK BATTERY & MAGNETO IGNITION DIAGRAM B P ADF 40 30 20 10 0 10 20 30 40 E.7.C Nov. 1933 | ||