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).
Two schemes for a spring-controlled rear shackle for front springs, stating a preference and raising an objection.
| Identifier | ExFiles\Box 106\1\ scan0328 | |
| Date | 20th April 1932 | |
| X5410. LID{A. J. Lidsey} See me HS{Lord Ernest Hives - Chair} X5410 X433 Bf. from E.{Mr Elliott - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} c. Hs.{Lord Ernest Hives - Chair} c. Da.{Bernard Day - Chassis Design} E.7/HP.20.4.32. J.III Spring Controlled Rear Shackle for Front Springs. Of the two schemes, Nos.3453 and 3454 with which we have been supplied for the above I prefer the former as it is more like N.Sch.3452 in which the shackle springs tend to carry the weight of the car, and is more straightforward in conception. The fact that there are four springs instead of two should not matter very much. There is one point however seems to me to constitute an objection, and that is that the spring end is not placed vertically underneath the shackle pivot which means that there will be a turning moment exerted all the time on the shackle springs. We should like to know from Da{Bernard Day - Chassis Design} if there is any reason why this should not be modified. Herewith original drawings N.Sch.3453/4. E.{Mr Elliott - Chief Engineer} | ||