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).
Series of graphs comparing riding comfort in front seats under various conditions at 23 M.P.H.
| Identifier | ExFiles\Box 55\3\ Scan225 | |
| Date | 16th July 1926 | |
| RIDING COMFORT TESTS IN THE FRONT SEATS OF R.R. CARS ROAD SPEED IN ALL TESTS 23 M.P.H. GRAPH I EFFECT OF SHOCK DAMPERS ON CAR RIDING AT FRONT 98 N.K. OPEN TOURING. TYRE PRESS. 40 & 45. HYDRAULIC DAMPERS 35 & 75 - No Dampers. 78 C.C. - FRICTION DAMPERS 27 LBS. 100 C.C. - STANDARD HYD. 35 & 75 LBS. 118 C.C. - FRICTION 55 LBS. 125 C.C. - FRICTION 90 LBS. 155 C.C. GRAPH II EFFECT OF FRONT SHACKLE ANGLE BOTH SHACKLES AT THE FRONT END OF THE SPRINGS NO DIFFERENCE COULD BE DETECTED BETWEEN THE 21° STANDARD & VERTICAL SHACKLE. GRAPH III EFFECT OF SHACKLE POSITION 44 P.K. LIMOUSINE. TYRE PRESS 40 & 45. HYDRAULIC DAMPERS 35 LBS & 75 LBS. - VERTICAL SHACKLE REAR. 110 C.C. - STANDARD SHACKLE FRONT. 117 C.C. GRAPH IV EFFECT OF TYRE PRESSURE 98 N.K. TOURING CAR. HYDRAULIC DAMPERS - TYRE PRESSURE 25 LBS. 90 C.C. - TYRE PRESS 40 LBS. 118 C.C. GRAPH V COMPARATIVE RIDING COMFORT ON R.R. CARS TYRE PRESSURE 40 & 45 - E.A.C.T. CABRIOLET FRICTION DAMPERS 27 LBS. SEMI-ELIPTIC REAR SPRINGS NO DAMPERS AT REAR. 70 C.C. - 44 P.K. LIMOUSINE 27 LBS FRICTION DAMPERS. 100 C.C. - 98 N.K. TOURING CAR 27 LBS FRICTION DAMPERS. 104 C.C. - 20 H.P. LANDAULETTE 5 STANDARD FRICTION DAMPERS. 93 C.C. RIGHT GRAPH: WATER LOSS IN TERMS OF MEASURABLE RIDING COMFORT ANYTHING ABOVE THIS LINE IS LIKELY TO CAUSE COMPLAINT. 20 H.P. REAR X-AXIS: VERY GOOD RIDING, GOOD RIDING, FAIR RIDING, MODERATE RIDING | ||