Table comparing principal chassis dimensions across various car models.
| Identifier | ExFiles\Box 18\1\ Scan070 | |
| Date | 3rd October 1934 guessed | |
| PRINCIPAL CHASSIS DIMENSIONS. Dimension. 40/50 Long. 20/25. Bentley. Vulture(Experimental 6 CYL OHV LONG STROKE / Aero Engine). J.3. Spectre(Codename for Phantom III). Wraith. Long type Wraith. Daimler 25 HP. -------------------------------------------------------------------------------------------------------------------------------------------------- Wheelbase. 12'6" 11'0 10' 6" 11' 1" 11'0" 11'10" 11' 11'3" 11'10" Rear track. 60" 56.325" 56.000" 58.000" 58.000" 61.000" 58.000" 57" 57" Frame Height(Front) 21.325" 19.800" 15.675" 19.550" 19.750" 19.625" 18.625" 18.625" - Frame Height(Rear) 20.000" 19.625" 14.675" 19.175" 19.250" 18.625" 17.625" 17.625" 18.940" Wheels. 19"X7" 19"X 6" 18" X 5.5" 18X 6.5" 18"X 6" 17"X 7.5" 17"X 7" 17" X 7" 18"X 7" Rolling Radius. 15.500" 15.000" 14.100" 14.800" 14.500" 14.750" 14.500" 14.500" 15.000" Rear Floor height. 21.000" 20.500" 20.000" 19.625" 18.625" 18.625" 19.750" Dash to rear axle. 100.000" 93.000" 88.000" 89.500" 93.000" 101.000" 93" 96" 98.500" Centre line of chassis to steering column. 10.125" 9.750" 9.250" 10.125" 9.750" 10.125" 9.750" 9.750" 10.400" Centre line of chassis to clutch pedal. 7.500" 6.750" 7.375" 8.250" 7.125" 7.250" 7.300" Centre line of chassis to brake pedal. 12.750" 11.000" 11.000" 12.500" 11.750" 13.000" 12.400" Centre line of chassis to accel: pedal. 16.500" 14.650" 14.750" 16.000" 15.250" 16.750" 17.000" Steering wheel to back axle. 69.250" 62.000" 53.000" 56.500" 63.000" 68.500" 63.000" 66.000" 64.000" | ||
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).