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).
Endurance testing and standardization of a chain drive.
| Identifier | ExFiles\Box 124\1\ scan0274 | |
| Date | 29th November 1939 | |
| 1044 To Ev.{Ivan Evernden - coachwork} c. to Jnr.{Charles L. Jenner} Rm.{William Robotham - Chief Engineer}12/JH.29.11.39. CHAIN DRIVE. Until a chain will last our normal bearing endurance run of 30 hours we cannot think of standardising. We shall have to repeat the run (when we have a unit). In the meantime we are running a chain drive unit on the road to see if it remains silent. Rm.{William Robotham - Chief Engineer} | ||