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 W.80 and B.80 models, including weight and load specifications.
| Identifier | ExFiles\Box 124\1\ scan0160 | |
| Date | 16th June 1939 | |
| 10/HH 66 / 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}16.6.39. 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 | ||