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).
Four-point rigid suspension system's effects on steering and engine vibration.
| Identifier | ExFiles\Box 25\3\ Scan275 | |
| Date | 28th October 1927 | |
| X654 ~~X235~~ X8410 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG28.10.27. FOUR-POINT SUSPENSION -> RIGID AT THE FRONT AND REAR. STEERING. We noticed a slight improvement in steering joggles with this suspension when the hydraulics were set at 40 lbs. and the hartfords tightened up to 70 lbs. The riding at the front of the car was, of course, harsh. ENGINE VIBRATIONS. The engine vibrations and torque reaction appeared to be definitely improved at low speeds. At high speeds we would not say that there was any merit in the 4-point suspension. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||