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).
Tests for steering 'taking charge' with different tyre, spring, and tube configurations on car 8-EX.
| Identifier | ExFiles\Box 67\4\ scan0231 | |
| Date | 25th November 1926 | |
| X8430 To Hs.{Lord Ernest Hives - Chair} from GWH.{George W. Hancock - Head Chateauroux} Hs{Lord Ernest Hives - Chair}/BWH/LG25.11.26. TESTS FOR STEERING 'TAKING CHARGE' WITH THE FOLLOWING CONDITIONS. X8420 Car 8-EX. Steering with 720 worm. New type light axle. Std. cross steering tube ( no friction ) Friction load at periphery of steering wheel 21bs.{A J. Barnes - Assistant Manager} (1) 6.75" balloon tyres - pressure 35 lbs. (2) 33 X 5 straight-sided tyres - pressure 45 lbs. (3) Std. side steering tube. (4) Side steering tube with increased length of springs (equal rating 1500 lbs.) Mark 2258. Lean of pivots 1° backwards. If we take the worst condition for taking charge as 100%, the following results are in order :- (2) and (3) 100% (1) and (3) 95% (2) and (4) 90% (1) and (4) 85% With conditions (2) and (3) the steering is light, more joggles are felt on the steering wheel and there is a feeling if the steering being unstable. It easily takes charge when the brakes are applied sharply with front wheels [strikethrough] turned, right or left lock. The affect was more pronounced on the right lock, this brake being more effective. With (1) and (3), the steering is not quite so light and there are less joggles on the wheel. There is hardly any difference in the contd :- | ||