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).
Increased mechanical strength of Thermoid and its use in facings for 25/30 and Bentley models.
| Identifier | ExFiles\Box 93\3\ scan0372 | |
| Date | 31th May 1937 | |
| 2. The greatly increased mechanical strength is a great advantage in every way, as the liability of Thermoid to crack on drilling has always been a matter of some anxiety. Some 11" and 10" facings for the 25/30 and Bentley are also in hand. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||