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 from springing tests on Ticknall Hill showing the effect of weight distribution on rear seat riding comfort.
| Identifier | ExFiles\Box 16\7\ Scan337 | |
| Date | 26th November 1930 | |
| SPRINGING TESTS 20 HP TICKNALL HILL STANDARD SUSPENSION THE EFFECT OF WEIGHT DISTRIBUTION ON REAR SEAT RIDING COMFORT. LEGEND: STANDARD 1CWT. ON LUGGAGE GRID. 1CWT. ON DUMB IRONS. Y-AXIS: RIDING COMFORT. (MEASURED BY WATER LOSS C.C.S.) X-AXIS: ROAD SPEED. (M.P.H.) ONE SPARE WHEEL AT REAR SHOCK DAMPER LOADS FRONT 80/70 REAR 85/80 BUFFER CLEARANCES NO LOAD FRONT N.S 1.75" O.S 1.7" REAR N.S. 4.8" O.S 4.7" SPRINGS. FRONT 1000 LBS. (3.1" INITIAL CAMBER) STANDARD SPRINGS REAR 1288 LBS. 1294 LBS. STANDARD SPRINGS CAR WEIGHT. FRONT 21 CWT 3 QRS 7 LBS REAR 28 " 1 " 21 " TOTAL 50 " 1 " 0 " TYRE PRESSURES 40 LBS/SQ" ALL ROUND. FIG II STAMP: 26 NOV 1930 | ||