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).
Performance graph showing Dynamo output in Amperes and Volts against Dynamo revolutions per minute.
| Identifier | ExFiles\Box 3\5\ 05-page011 | |
| Date | 1st October 1911 guessed | |
| FIG. IV. DYNAMO - REVS. PER MINUTE 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 AMPERES & VOLTS 2. 4. 6. 8. 10. 12. 14. LAMP LOAD DYNAMO OUTPUT VOLTS AT BATTERY TERMINALS | ||