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 comparison between a Ford V-8, a 3.5' bore Bentley, and a Phantom III.
| Identifier | ExFiles\Box 82\4\ scan0220 | |
| Date | 7th January 1936 | |
| -3- Hs{Lord Ernest Hives - Chair}/PD.4/KM.7.1.36. Comparison with V-8 Ford, 30 HP: 3.5" bore Bentley, and Ph.III. Complete Car Weight, full of petrol, spares, tools etc. Ford V-8 30 HP. | Bentley 3.5 bore, 29 HP. | Ph.III, 51 HP. cwts. qrs. lbs. | cwts. qrs. lbs. | cwts. qrs. lbs. 28 0 14 | 33 0 0 | 49 1 14 Ticknall Hill. Ford V-8 | Bentley 3.5 bore | Ph.III. 36.5 secs. | 48 secs. | 48.2 secs. Accelerations - Top Gear. 10-30 8.0 secs | 5.6 secs | 6.16 secs. 10-40 12.1 " | 9.4 " | 8.96 " 10-50 17.5 " | 13.6 " | 12.43 " 10-60 23.3 " | 17.6 " | 17.96 " 10-70 32.0 " | 23.4 " | 23.66 " Gear Ratios. Top 4.11 : 1 | Top 4.1 : 1 | Top 4.25 : 1 2nd 6.58 : 1 | 3rd 5.11: 1 | 3rd 5.59 : 1 1st 11.59 : 1 | 2nd 7.1 : 1 | 2nd 8.15 : 1 Rev. 13.89 : 1 | 1st 11.15: 1 | 1st 12.74 : 1 | Rev. 11.16: 1 | Rev. 12.92 : 1 Hs{Lord Ernest Hives - Chair}/P.Dodd. | ||