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 calculations, failing load, and modifications for the Bent Side Steering Tube of a Phantom III.
| Identifier | ExFiles\Box 95\1\ scan0525 | |
| Date | 25th April 1939 | |
| 350. To Da.{Bernard Day - Chassis Design} from Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions} c. By.{R.W. Bailey - Chief Engineer} c. Rm.{William Robotham - Chief Engineer} c. Da{Bernard Day - Chassis Design}/JD.{J. Draper - Frames} c. Ev.{Ivan Evernden - coachwork} -------------- Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions}7/N.25.4.39. -------------- Bent Side Steering Tube - Phantom III. ----------------------------------- PD.426, attached to Da{Bernard Day - Chassis Design}'s copy, shows the bent side steering tube for Phantom III. With the size of tube shown, the maximum stress in the tube due to torque on the steering wheel of 42 lbs.ft. ignoring steering box efficiency is approximately 6.9 tons/in.sq. from the calculations of BY/Mr.Bower. The ultimate failing load in compression should be less than that of the rocker shaft of PD.422. A test to destruction of a tube to this scheme, in compression, would be very interesting. The modifications required to the side steering tube springs to bring the overall steering flexibility back to the required figure can best be found experimentally. Da{Bernard Day - Chassis Design}/DB.{Donald Bastow - Suspensions} DB{Donald Bastow - Suspensions} | ||