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).
Specifications for a B.III rear axle.
| Identifier | ExFiles\Box 98\1\ scan0101 | |
| Date | 7th July 1937 guessed | |
| B.III. REAR AXLE. 402 1 5/8 hypoid Wraith N.Sch. 4954 with tubes to give correct track half shafts 1 1/8 dia. Steel pinion brg. housing of this section largest brg. possible preloaded. Oil thread instead of oil seal 4.1/1 ratio. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 7 | ||