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).
Diagram with a description of a Lancia-type suspension system.
| Identifier | ExFiles\Box 178\1\ img193 | |
| Date | 28th August 1926 guessed | |
| 20 A LANCIA SUSPENSION DIAGRAM. SPRUNG WT. MOVING WITH CHASSIS. UNSPRUNG " " " WHEEL. A.{Mr Adams} MAIN SPRING. LOW RATING, LARGE INITIAL DEFLECTION, SMOOTH RIDING OVER SMALL BUMPS. B. AUXILIARY SPRING. HIGH RATING COMING INTO OPERATION AS THE WHEEL APPROACHES MAXIMUM BUMP AFTER HITTING A CONSIDERABLE OBSTRUCTION. C. HIGH RATING REBOUND SPRING. TO CHECK THE MOVEMENT OF THE WHEEL AWAY FROM THE FRAME. D.{John DeLooze - Company Secretary} HYDRAULIC DAMPER PISTON. ON THE RE-BOUND THE OIL HAS TO PASS BETWEEN THE PISTON AND THE CYLINDER. THE CLEARANCE BETWEEN THE PISTON AND CYLINDER VARIES AT DIFFERENT PORTIONS OF THE BORE, GIVING GRADUATED DAMPING. A SPRING LOADED VALVE LIMITS THE MAXIMUM DAMPING ON REBOUND. ON COMPRESSION THERE IS ONLY ABOUT 1/8TH OF THE REBOUND DAMPING LOAD, A SPRING LOADED NON RETURN VALVE REMOVING THE NECESSITY FOR THE OIL TO PASS BY THE PISTON. E.{Mr Elliott - Chief Engineer} CYLINDER CARRYING WHEEL. WORKING IN THE TWO GUIDES F.F, BOTH RIGIDLY ATTACHED TO THE CHASSIS FRAME. | ||