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 Ampere Output and Operating Voltages versus vehicle speed for the 40/50 HP Phantom II chassis.
| Identifier | ExFiles\Box 165\6\ img245 | |
| Date | 14th December 1929 guessed | |
| AMPERE OUTPUT OPERATING VOLTAGES 18.70 18.50 18.30 18.10 17.90 17.70 17.50 17.30 17.05 16.80 16.50 16.30 15.90 15.55 15.20 14.80 14.40 14.00 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 0 200 400 600 800 1000 1200 1400 0 5 10 15 20 25 40/50 H.P. 1. REPRESENTATIVE 2. REPRESENTATIVE 3. MAXIMUM PE 4. REPRESENTATIVE PHANTOM II CHASSIS M.P.H. | ||