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).
Request to design softer front springs for models W.80 and B.80 with supporting weight and load data.
| Identifier | ExFiles\Box 109\4\ scan0092 | |
| Date | 10th June 1939 | |
| 666 + 1044 v 1306 To Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} c. By/HEB.{H. Biraben} RM{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}1/MH.{M. Huckerby}10.6.39. SOFTER FRONT SPRINGS - W.80 & B.80. Will you please design springs of 8 1/2" effective deflection for W.80 and B.80, when laden. 30.G.VII (W.80) has the following weights etc:- N.S.F. O.S.F. Weight on front wheel light 1064 lbs. 1149 lbs. " " " " laden 1149 " 1215 " Loads on springs (at wheel) light 934 " 1019 " " " " " " laden 1019 " 1085 " Rate per inch, lbs. 132 140 Static Deflection, light 7.07" 7.28" " " , laden 7.72 7.75 Bounce Frequency, light 70.5 v/mm. Equivalent static deflection 7.1" 11.B.V. (B.80) has the following weights etc:- N.S.F. O.S.F. Weight on front wheels, light 972 1106 " " " " laden 1042 1138 Loads on springs (at wheel), light 842 976 " " " " " laden 912 1008 | ||