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).
Cost comparison from various firms for the supply of Semi-Floating Rear Axle Shafts.
| Identifier | ExFiles\Box 148\5\ scan0382 | |
| Date | 20th July 1938 | |
| -3- 5. Quantity 6. Quality 1. Selection of Firm. The following figures show the importance of finding the correct firm for Taper Rear Axle Shafts. The Scottish Stampings are just purchasing a special machine for rolling the shafts taper. This reduces the machining required and also the weight of material in the forging. B.III SEMI-FLOATING REAR AXLE SHAFT GB. 3604 | Firms | 500 | 1000 | Material | Remarks | |---|---|---|---|---| | Firth Derihon | 27s. 7d | 27s. 7d | S.65 | This is the cheaper of the two alternative materials shown on the drawing | | | 16s. 0d | 16s. 0d | SAE.4140 | This material is used by Rovers and the majority of U.S.A. cars. | | Omes Ltd. | | 25s. 0d | S.65 | | | | | 18s. 0d | SAE.4140 | | | Smith Clayton | 17s. 0d | 17s. 0d | S.65 | | | | 12s. 0d | 12s. 0d | SAE.4140 | | | Hughes-Johnson | 18s. 0d | 17s. 9d | S.65 | | | | 14s. 6d | 14s. 3d | SAE.4140 | | | Scottish Stampings | 13s. 11d | 13s. 6d | S.65 | In this case the quotation includes taper rolling which will save 2.6d labour if the taper is left black as done on over 66% of U.S.A. Cars. | | | 10s. 3d | 10s. 0d | SAE.4140 | | (Contd:- | ||