Continued analysis of damper action, focusing on fluid resistance, rebound, and bump deflection.
| Identifier | ExFiles\Box 67a\1\ scan0187 | |
| Date | 29th April 1926 guessed | |
| contd :- -6- mean load position, the effect of which would be the comparative rapid return of the road wheel from a 'bump' excursion to its mean riding position with vigorous fluid resistance given to rebound passed this point. The presence of these different diameter bores and their relative positions seem an important feature and one which is likely to influence the efficiency of the damper. By disconnecting the plunger rod from its anchorage at the top and drawing upwards by hand the increased resistance on entering the smaller bore is very evident - in fact the plunger cannot be raised into this position except very slowly. Unfortunately at present we are unable to give any reliable reliable figures for the relative resistance offered by the damper in the different bores because with it operating partly upon the principle of oil leakage the resistance encountered is dependent upon the speed of operation. We have however evolved a scheme whereby we hope to be able to state precisely the resistances afforded at various parts of the stroke in each direction and how these vary with the rate of operation. SUMMARY OF ACTION OF DAMPER. The damping resistance offered is greater in the rebound direction than in the bump deflection direction. The resistance to rebound becomes considerably greater when the road wheels rebound past their normal - or static - deflection point. The resistance would be greater, the greater the speed of operation. Hs {Lord Ernest Hives - Chair} /A.C.Lovesey. | ||
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).