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).
Instruction to change the material for metal covers on rear brake operating shafts from aluminium to mild steel.
| Identifier | ExFiles\Box 66\5\ scan0060 | |
| Date | 13th April 1926 | |
| Y8360 BY {R.W. Bailey - Chief Engineer} /T.M.D. c. Hs. {Lord Ernest Hives - Chair} c. PHS. BY5/H. 13.4.26. RE METAL COVERS ON REAR BRAKE OPERATING SHAFTS. I wish to confirm my verbal instructions that covers G.73657 and G.75662 should be produced in mild steel in future, in place of aluminium. It is evident from the state of the aluminium shields that they will not stand up to the continuous high speed driving on bad roads, which constitute our French test. We should issue new piece numbers for the new parts and bring them in after using up the aluminium parts which are at present on order, as I do not consider that any measurable percentage of our chassis will run under conditions likely to reproduce what occurred on the French test. At the same time, it is important that we should have an adequate protection, even under the worst conditions. BY. {R.W. Bailey - Chief Engineer} | ||