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 calculations for the Paulin car, detailing gear ratios and speeds in mph at 4000 rpm.
| Identifier | ExFiles\Box 160\3\ scan0135 | |
| Date | 30th January 1939 | |
| 1379 Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}1/MH.{M. Huckerby}30.1.39. PAULIN CAR. Axle 12/41. = 3.41 Overdrive .846 2nd. 1.5 Tyres 6 1/2 x 19. 650 revs mile. On overdrive 4000 r.p.m. = 127 1/2 m.p.h. On direct 4000 r.p.m. = 108 " 2nd. " " = 72 " 1st. " " = 45 1/2 " | ||