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).
Steering heaviness, particularly when reversing, detailing four tests conducted on steering gear components.
Identifier | ExFiles\Box 180\M3\M3.5\ img007 | |
Date | 1st April 1925 | |
R.R. 493A (50m) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -3- Expl. No. REF: HBL/LCC.4.25. Another point is that the EAC. 'Y' series is also heavy if the car is driven backwards. If the stiffness was due to excess castoring, driving the car backwards will soon shew it up because the steering becomes unstable. The following tests have been made in connection with the steering gear. (1) Roller and ball bearings on rocker shaft in place of plain bearings. This undoubtedly makes the steering lighter, but it still has the characteristic of being heavy on full lock. A steering of this type was tried by Sales and complained of. (2) Whitemetal nut. We have not been able to appreciate that this made any difference to the freeness of the steering but we have noticed on steerings which have been run with the whitemetal nut, the bedding of the worm is much more even and we consider it would be a good scheme to test thoroughly with a view to adopting it. The Hispano steering with whitemetal nut has no slack whatever. (3) Bolted levers on the rocking shaft. In some cases these have made a definite improvement but it does not overcome the fault of the heavy steering on full lock. (4) Steering box supported from both sides to DA{Bernard Day - Chassis Design}'s instructions. We have not been able to appreciate that this made any difference. contd :- | ||