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).
Analysis of rear suspension components and a proposal for a new method of testing ride comfort.
| Identifier | ExFiles\Box 16\7\ Scan321 | |
| Date | 14th November 1930 guessed | |
| -4- (4) Low rating rear springs reduce "throwing" and uncomfortable rear riding in combination with (1) (2) (3) and (5) Lowered rear hydraulic damping. (6) Drilled rear damper valves increase tendency to hit the buffers, e.g. lower loading with plain valves is preferable to high loading with drilled valves. (7) Friction damping (with this combination of springs) at the rear is no advantage. The rear springs on this car are weaker than we should recommend for general use (big loads and occasional Continental trips) but we think will prove sufficient for the conditions under which it is normally used. The effects of small alterations to damper loads etc, made during the investigations, were registered by personal impressions, no form of measurement of riding comfort was utilised. We are proposing to duplicate this springing on one of our own experimental cars, and attempt to measure the effect of damper load variation etc, by means of a water spilling test, this method of testing has previously given results more in accord with personal impressions of comfort than any other means of comfort measurement we have previously tried. HS{Lord Ernest Hives - Chair}/AJL. | ||