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).
Blueprint graph showing the results of rear axle motion experiments on a Phantom 98 N.K.
| Identifier | ExFiles\Box 67a\2\ scan0211 | |
| Date | 29th October 1928 | |
| REAR AXLE MOTION EXPERIMENTS SHEET I PHANTOM 98 N.K. M.P.H. SURFACE:- AVERAGE MAIN ROAD SHARDLOW STRAIGHT. NO SHOCK ABSORBERS x 5.34 AXLE HEAVILY DAMPED x 2.68 SURFACE:- BAD POT-HOLES. BOLTON LANE. NO SHOCK ABSORBERS x 5.34 HEAVY DAMPING x 5.34 HORIZONTAL SCALE IS TIME, & EQUALS APPROX .7 SECS. PER INCH. VERTICAL SCALE IS AXLE MOVEMENTS, & SHOULD BE MULTIPLIED BY THE RATIOS SHOWN (E.G. x 5.34) TO GET ACTUAL MOVEMENT OF AXLE IN INCHES, A DOWNWARD MOTION OF THE PEN, MEANS DOWNWARD MOVEMENT OF THE AXLE. THE SMALL FIGURES BENEATH THE GRAPHS GIVE THE AXLE VELOCITY IN FT/SEC AS OBTAINED FROM THE SLOPE. | ||