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).
Stress analysis of old and new type cross steering levers, noting a 36% reduction in the new design.
| Identifier | ExFiles\Box 80\1\ scan0139 | |
| Date | 14th July 1914 | |
| R.R. 235a (150 H) (W.W. 438. 17-6-14) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0626. 4701 RE R5/P6714 - CROSS STEERING LEVERS. J.{Mr Johnson W.M.} for R.{Sir Henry Royce} 14.7.14. Da{Bernard Day - Chassis Design}3/G14714. In reply to your note re the above, we have taken time to analyse the stresses in these levers, and though the U section in torsion is rather complicated, we think the accompanying diagrams very closely represent the relative stresses in the old and new type. It will be seen that the stress reaches a peak, in the old type where the fracture occurs. The increased section in the new type gives a reduction of stress of 36% and moves the weak point further along the lever. We have removed the leather packings from the springs. Da.{Bernard Day - Chassis Design} DICKINSON MADE AT CROXLEY | ||