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 on the failure of a die-cast unannealed aluminium steering wheel under load.
| Identifier | ExFiles\Box 3\1\ 01-page014 | |
| Date | 31th January 1913 guessed | |
| -3- Die cast Steering wheel, aluminium, unannealed. | Load at rim of Steering wheel | Deflection measured at circumference of rims. | |-------------------------------|-----------------------------------------------| | 250 lbs. | .05" | | 500 " | .13" | | 750 " | .31" | | 1000 " | fracture. | The boss of the wheel fractured immediately before the whole of the thousand lbs load was applied. The fracture occured in exactly the same place as in the previous test but appeared to be rather more christaline and rather less short. The bolts were badly distorted and the boss deflected from the circular. There was but little distortion in any other part of the wheel. (contd) | ||