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).
Test report comparing the performance of a weighted Chevrolet against a 30 HP Rolls-Royce.
| Identifier | ExFiles\Box 147\5\ scan0117 | |
| Date | 26th November 1936 | |
| -2- Further tests were taken with the Chevrolet weighted to equal the 30 H.P. Rolls, viz., to 38 cwts. 1 qr. 21 lbs. The test consisted of the Chevrolet being driven as hard as possible, using the additional suction advance, the Rolls keeping distance in the rear using the necessary throttle opening. The results showed the Chevrolet to be 1.4 m.p.g. better off at an average speed of 42 m.p.h. CONCLUSIONS. It would appear from these final tests of equal weights, that the distribution and efficiency of the Chevrolet engine is better than the 30 H.P. Rolls. Rm{William Robotham - Chief Engineer}/F.{Mr Friese} Dodd. | ||