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).
Road tests comparing car performance with and without Truffault Shock Absorbers.
| Identifier | ExFiles\Box 19\2\ Scan085 | |
| Date | 29th May 1919 | |
| Contd. -2- EHL/LG29.5.19. We also happened to have at the works for repair Col. Briggs' old car which you will remember we fitted with Truffault Shock Absorbers. We tried this car over the same piece of road with and without shock absorbers fitted, there was quite a marked improvement with the shock absorbers connected. They did not, however, prevent the axle from leaving the road over the worst bumps but the axle appeared very much better controlled. Without shock absorbers, if one drove fast over the bumpy road, the car felt out of control; with the shock absorbers, the car would be easily kept straight at any reasonable speed. We intend to make some further tests comparing the R.R. with the Packard and the Lanchester over the same road. As far as possible the springs wbll be loaded in a similar way. The point we wish to emphasize at the moment is that only the minimum number of cars should be made without shock absorbers. EH. R.R. 235A (500 T) (S.D. 40S. 29-4-17.) Bm. 2156/15. | ||