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).
Revised list of new features for the W.80 Bump Chassis.
| Identifier | ExFiles\Box 119\3\ scan0212 | |
| Date | 22th August 1939 | |
| 22.8.39. Revised list of new features for W.80 Bump Chassis. New front bump buffers to EXS.1828. Lower triangle levers lightened to EXS.1756 and modified as in SCD.1472 for simplified lower bearing. Lower bearing simplified to SCD.1472. 1% chromium steel yokes. N.S. yoke should be modified to take Harris bushes in top bearing. Harris bushes replacing silentbloc bushes in N.S. yoke bearing. New double valve shock dampers incorporating modifications as on drawing of casing EXS.1919. Vandervell bushes in dampers. Damper covers in pressed steel to EXS.1798, 1799,1800, latest pressed steel levers on O.S. damper. .4% Carbon steel roll rod FB.4745 modified for Harris bushes in connecting links. Harris bushes in roll rod connecting links. Super flexit pipes to EXS.1917 for chassis lubrication on yokes. 1% chromium pivots as requested in Rm{William Robotham - Chief Engineer}/HFP.3/JH.18.7.39. Torque arms. N.S. in R.R.50. O.S. in Cast Iron. Simplified spherical bearing for torque arm. Harris bushes for rear springs if scheme can be prepared in time. Rm{William Robotham - Chief Engineer}/HFP. | ||