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 test report on 20 HP suspension modifications, noting a tendency to pitch at high speeds.
| Identifier | ExFiles\Box 106\1\ scan0113 | |
| Date | 21th November 1927 | |
| X5410 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG21.11.27. 20 HP. SUSPENSION. X5410 5770 We carried out road tests with the 20 HP. fitted with 900 lbs. 25% stiffer rear springs and dampers 55 lbs. up and 60 lbs. down. The results in riding were not bad at low speeds and from the driving point of view the behaviour of the car was excellent under all conditions. There was rather an unpleasant tendency to pitch however at the higher speeds. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer} | ||