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 status for the Phantom III model.
| Identifier | ExFiles\Box 161a\4\ scan0129 | |
| Date | 15th September 1936 | |
| ITEM. (3) DESIGN POSITION. Phantom III - Continued. Earthing spring for front hubs - wireless equipped cars. In hand. Mod. to front brake bell crank lever to clear pivot bearing nuts. Completed 15.9.36. Mod. to main spindle I.F.W.S. for cheaper production. In hand. Schemes to increase flexibility of engine coupling. In hand. Cheapened method of bolting rear axle to road springs. In hand. Mods. to Phantom III bottom half crankcase to reduce cost. In hand. Camshaft bearings for small camshaft. In hand. Tangent flank Cam form with .950" base circle and 1.375" tappet radius. In hand. Modified main lever to switch box. In hand. Modified switch box flexible conduit. In hand. Foot switch to suit English and Continental requirements. In hand. Mod. to bell crank lever on yoke piece to give increased movement. In hand. Modified leverage to front and rear brakes. In hand. Cheapened side spare wheel carrier. In hand. Hardy Spicer type propellor shaft - to reduce cost. In hand. Further strengthening of universal ring for 2nd speed coupling. In hand. | ||