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).
Graph showing the effect of adjustable leak on Delco Lovejoy shock dampers on rear axle movement at various speeds.
| Identifier | Morton\M19\ img156 | |
| Date | 20th April 1931 guessed | |
| DELCO LOVEJOY SHOCK DAMPERS EFFECT OF ADJUSTABLE LEAK ON REAR AXLE MOVEMENT BURTON ROAD LEVEL CROSSING. 25 EX CAR LOW RATING ROAD SPRINGS ROAD SPEED (M.P.H) 30, 35, 40, 45, 50 MAXIMUM REAR AXLE MOVEMENT COMPRESSION 6, 4, 2 REBOUND 2, 4, 6 NORMAL AXLE POSITION NORMAL BUFFER CLEARANCE MAXIMUM LEAK MINIMUM LEAK | ||