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).
Numbered list of vehicle component modifications and experimental updates.
| Identifier | ExFiles\Box 83\1\ scan0116 | |
| Date | 22th May 1936 | |
| -2- Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}5/KW.22.5.36. (4) Aluminium brake drums with lever arrangement to avoid jaggors. (5) Modified and simplified exhaust system. (6) Better rear axle pinion mounting. (7) Lightened road springs. (8) Experimental front roll rod. 3 1/2" Defln front springs (9) Thin plate battery. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||