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 logging component failures on a 40/50 front bumper chassis over a 94-hour period.
| Identifier | ExFiles\Box 119\2\ scan0164 | |
| Date | 10th December 1920 | |
| 40/50 CHASSIS. BUMPER CHASSIS - FRONT. Special fittings fitted. Radiator - Monel metal plates and copper tubes. Rocker shaft on Steering F.8956 - D.{John DeLooze - Company Secretary} type. (X.3920) Support bracket E.20246 (X.4373) New Frame with fittings off previous frame. Total hrs. run. | Remarks. 5 hrs. 30 mins. | Bottom leaf O.S. spring broken. 6 hrs. 40 mins. | 2nd. leaf from bottom O.S. broken. 7 hrs. 0 mins. | 3rd. and 4th. leaves from bottom O.S. broken. 15 hrs. 35 mins. | 5, 6 and 8 leaves N.S. spring broken. 22 hrs. 45 mins. | Top leaf N.S. spring broken - 4th. leaf broken. 33 hrs. 15 mins. | 1, 3, 4, 5, 6, 7 N.S. leaves broken. 56 hrs. 35 mins. | Top leaf N.S. spring broken centre. 59 hrs. 15 mins. | 2nd. and 3rd. leaves N.S. spring broken. 63 hrs. 35 mins. | 7, 8 and 9 leaves N.S. spring broken. 70 hrs. 10 mins. | Centre bolt broken N.S. spring. 81 hrs. 21 mins. | Centre bolt broken N.S. spring. 89 hrs. 56 mins. | Top leaf O.S. spring broken (U.S.A.) 91 hrs. 11 mins. | 6, 7 and 8 leaves broken - 9th. cracked O.S. spring. Frame cracked at N.S. front cross member bolt holes. 94 hrs. 36 mins. | 2, 12 and 13 leaves broken O.S. spring. Test finished Radiator brackets O.K. Radiator fouls brackets where cleared away at bottom for brackets. R.R. 335A (100) TY (S.H.) 79S. 10-12-20 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2847 | ||