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 report detailing rear spring failures during a bump test.
| Identifier | ExFiles\Box 119\2\ scan0095 | |
| Date | 16th March 1920 | |
| 16.3.20. X.2628. X.1331. REAR SPRING FAILURES ON BUMP TEST 2" BUMPS 180° - 105 R.P.M. Description of Part. | Number of hours. run. N.S. Split Leaf broken. | 8 hrs. 30 mins. N.S. " " cracked. | 7 " 0 " O.S. " " " | 15 " 30 " N.S. " " " | 6 " 55 " O.S. " " " | 14 " 30 " N.S. " " " | 10 " 55 " O.S. " " " | 17 " 30 " N.S. " " broken. | 16 " 55 " O.S. 3rd. leaf broken. | 17 " 15 " O.S. 4th. " " | 18 " 5 " O.S. 5th. " " | 20 " 0 " N.S. 6th. " " | 35 " 0 " N.S. 2nd. " " | 14 " 15 " O.S. 2nd. " " | 31 " 0 " N.S. 2nd. " " | 18 " 35 " | ||