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).
Test log detailing component run times and a noted failure of a ball and stud.
| Identifier | ExFiles\Box 2\B002_X168\ 00000001-page202 | |
| Date | 12th December 1913 guessed | |
| -2- hrs. mins. Offside 0446. 1 - 22. * * 2 - 30. * * 4 - 10. * * 26 - 25. * * 36 - 8. * * 19 - 40. * * 52. One ball and stud was broken in 12 hrs. 42 mins. but this had been in use on previous tests. | ||