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).
List of design modifications and their completion status for the 25-30 HP and Phantom III chassis.
| Identifier | ExFiles\Box 161a\4\ scan0014 | |
| Date | 11th February 1936 guessed | |
| (sheet 2) ITEM. DESIGN POSITION. 25-30 HP. CHASSIS. - CONTINUED. Modified radiator - unbalanced shutters, etc. Completed 31.1.36. Improved position of carburetter filter. " 23.1.36. Clutch operating mechanism linkage - diagrams. Completed. Modification to induction pipes. Completed 24.1.36. Hand throttle lever on countershaft. Completed 27.1.36. Revised Induction and exhaust manifolds to improve hot spot drainage. Completed 21.1.36. Carburetter overflow drain pipes. Completed 3.2.36. Non return valve - hot spot drain. Completed 3.2.36. Dip stick oil level indicator. In hand. Mod. to rocker shaft lubrication. Completed 6.2.36. Mods. to clutch casing and operating lever for 11" Borg and Beck clutch. Completed 5.2.36. Mod. to isolated gear change lever - experimental. Completed. PHANTOM III Chassis. Mod. to road wheel locking device to facilitate entry of splines. In hand. Position of fuse in regulator unit. In hand. 8" longer wheelbase chassis - Frame - pipes and wiring conduits. Completed 1.2.36. | ||