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 shock damping on rear seat riding comfort during springing tests on Ticknall Hill.
| Identifier | ExFiles\Box 16\7\ Scan336 | |
| Date | 26th November 1930 | |
| SPRINGING TESTS. 20 H.P. TICKNALL HILL. STANDARD SUSPENSION. THE EFFECT OF SHOCK DAMPING ON REAR SEAT RIDING COMFORT LEGEND: STANDARD. ————— NO FRONT DAMPERS ------ NO REAR DAMPERS – – – – NO DAMPERS. . . . . . Y-AXIS: RIDING COMFORT. (MEASURED BY WATER LOSS C.C.'S) X-AXIS: ROAD SPEED (M.P.H.) FIG. I 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/□" ALL ROUND 26 NOV 1930 | ||