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).
The failure of the 20 HP steering tubular support and proposed improvements.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan230 | |
| Date | 12th June 1925 | |
| R.R. 493A (50 H) (D.D. 31, 12-6-25) J.H.D. EXPERIMENTAL REPORT. ORIGINAL Expl. No. REF He1/LGil.9.25. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} 20 HP. STEERING. Y 5430 X 5840 It will be noticed in the reports of 9-G-111 car running in France, that the tubular support for the steering failed after approximately 18,000 miles. The failure occurred close to the bracket which is brazed on to the end of the tube and bolted to the frame. On the bumping tests in connection with the 20 HP. cars, we frequently have this tube fail in the same place. The tube at present is made of mild steel. The failure occurs where the tube is reduced in diameter. We suggest that an immediate improvement would be to improve the material and if possible increase the diameter of the tube at the point where it fails. It is possible that when the diameter of the worm is increased on the 20 HP. and a new steering box made, it may be arranged that the steering is supported in a similar manner as it is on the Phantom! Hs.{Lord Ernest Hives - Chair} | ||