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).
From Rm to the Laboratory regarding the composition and sourcing of an American alloy (14.B) for Bentley bearing shells.
| Identifier | ExFiles\Box 115\1\ scan0162 | |
| Date | 4th December 1936 | |
| 1020 To H.L.(Laboratory) from Rm.{William Robotham - Chief Engineer} Rm.{William Robotham - Chief Engineer}7/AP.4.12.36. We want to obtain some bearings in the American alloy which is known as 14.B. Its' composition it - 5% tin. 15% antimony. 80% lead. Will you please let us know where we can obtain sufficient quantity to line one set of Bentley steel bearing shells and also whether a 70 lead 30 tin solder will give good adhesion. Rm.{William Robotham - Chief Engineer} | ||