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).
Instruction from Mr. Royce to change the bevel gear ratio for the Vulture rear axle to 4.75 to 1.
| Identifier | ExFiles\Box 74\4\ scan0042 | |
| Date | 2nd February 1920 | |
| X3548 1S To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} Copy to CJ. " " Bn.{W.O. Bentley / Mr Barrington} " " Hs.{Lord Ernest Hives - Chair} " " Ck.{Mr Clark} E1/G12.2.20. X.3873. RE VULTURE REAR AXLE.S I am desired by Mr. Royce to inform you that the ratio of the bevel gears for the Vulture rear axle should be 4.75 to 1, and to ask you to alter the bevels in your N. scheme 49 to this ratio, and kindly send a fresh print from the altered scheme. E.{Mr Elliott - Chief Engineer} | ||