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).
Results of changing the front road springs on car 2.B.50.
| Identifier | ExFiles\Box 112\1\ scan0116 | |
| Date | 2nd March 1939 | |
| 846 To Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork} from Rm{William Robotham - Chief Engineer}/FWK. c. to Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions} Rm{William Robotham - Chief Engineer}/FWK.3/JH.2.3.39. 2.B.50. The above car has had the front road springs changed as follows - On the O.S. is fitted FB.3947 a B.50 spring, poundage 900. On the N.S. is fitted FB.3826 a B.V. spring poundage 800. The static deflection obtained from these springs are as follows - O.S.F. 135 lb/in. = 6.7" U.L., 7.0"L. N.S.F. 121 lb/in. = 6.65" U.L., 7.0"L. This indicates that we still have not got the static deflection we desire inspite of the fact that the spring loads are considerably in excess of the supposed spring poundages. Rm{William Robotham - Chief Engineer}/FWK. | ||