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).
Progress report on the 15,000-mile car (35-EX), covering tests and solutions for steering, clutch, hydraulic tappets, and oiling issues.
| Identifier | ExFiles\Box 101\3\ scan0048 | |
| Date | 7th December 1936 | |
| 500 Hs.{Lord Ernest Hives - Chair} from Rm.{William Robotham - Chief Engineer} Sg.{Arthur F. Sidgreaves - MD} Hy.{Tom Haldenby - Plant Engineer} E.{Mr Elliott - Chief Engineer} By.{R.W. Bailey - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} Rm.{William Robotham - Chief Engineer}16/AP.7.12.36. GENERAL CAR POSITION PH.III. 15,000 MILES CAR 35-EX. is now being prepared for tests in France. We expect it to be ready immediately after Christmas. Steering We have not heard of a case of low speed wobble which cannot be cured by the parts which have been recently standardised. 35-EX. will go to France with the new wish-bone geometry to improve steering shocks at high speed. These parts are at present holding the car up as continuous difficulty has been experienced in getting the necessary forgings. These are at last on the machines. Clutch Jaggers. A new material and altered centre plate which has now run several thousand miles on 35-EX. in London seems to be a step forward. A plate of this type is available for trying on a trials car. Hydraulic Tappet Mechn. The use of thin oil from our experience seems to be the solution to tappet sticking in cold weather. Wear - better hardening and improved lubrication is running on 35-EX. Work is proceeding on the test bed to enable us to get rid of these self adjusting tappets. 35-EX. will run in France without them. Design have produced new camshaft. Oiled up Sparking plugs Cutting off of the oil feed from the inlet valve stem eliminates top over oiling. We have the 'L' section piston rings on test which will be available in case complaints occur of over oiling due to lubricant passing pistons. continued | ||