The Spectre Rear Axle, detailing its specifications and similarity to the J.3. (or Vulture) model.
| Identifier | ExFiles\Box 92\5\ scan0002 | |
| Date | 18th April 1934 | |
| X4644 302 To Dr. from Da. {Bernard Day - Chassis Design} c. Mr. E. {Mr Elliott - Chief Engineer} Hs. {Lord Ernest Hives - Chair} AHG. Hdy. {William Hardy} Da. {Bernard Day - Chassis Design} 2/HP.18.4.34. Spectre(Codename for Phantom III) Rear Axle. Herewith we send N. Sch.4028 showing the rear axle tubes and driving shafts. The axle tube is similar to J.3. (or Vulture(Experimental 6 CYL OHV LONG STROKE / Aero Engine)) except as to length, and is intended to be manufactured in the same way. The dimensions of the axle shaft are also those of J.3. Da. {Bernard Day - Chassis Design} | ||
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).