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 at Ticknall Hill comparing riding comfort at different speeds based on rear seat position.
| Identifier | ExFiles\Box 16\7\ Scan338 | |
| Date | 26th November 1930 | |
| SPRINGING TESTS 20 EX. TICKNALL HILL. STANDARD SPRINGING SHOWING THE INCREASED COMFORT IN A BODY WHERE THE REAR SEATS ARE FORWARD OF THE REAR AXLE (E.G) LIKE 18 EX, 24 EX, 26 EX) Graph Legend: REAR SEATING POSITION IMMEDIATELY OVER REAR AXLE CENTRE LINE: ------ " " " 12" FORWARD OF " " LINE: . . . . " " " 12" REAR " " LINE: - - - - & TWO SPARE WHEELS, & 1 CWT. LUGGAGE AT REAR:- Y-Axis: RIDING COMFORT (MEASURED BY WATER LOSS C.C.S.) X-Axis: ROAD SPEED (M.P.H) ALL OTHER CONDITIONS AS PREVIOUS TESTS. THE REAR BUFFER CLEARANCES IN THIS CASE WERE REDUCED TO N.S 4.35" O.S. 4.1". FIG. III Stamp: 26 NOV 1930 | ||