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).
Petrol consumption test comparing a Chevrolet GAE-20 with a 30 HP RR model.
| Identifier | ExFiles\Box 126\4\ scan0168 | |
| Date | 24th October 1936 | |
| To Rm.{William Robotham - Chief Engineer} 24.10.36. Chevrolet Petrol Consumption test using GAE-20 as a check car. Condition of test. Chevrolet weighted down to equal the R.R. 30 H.P. Driving as hard as possible, the Rolls keeping distance in the rear using necessary throttle opening. Petrol consumption Chevrolet - 17,4 M.P.G. " " 30 H.P. RR. 16.0 M.P.G. Average speeds . . . . . . . . . . 42 M.P.H. Car weighted to . . . . . . . . . . 38 cwts. 1 q. 21 lbs. Rm{William Robotham - Chief Engineer}/F.Dodd. | ||