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 to improve high-speed steering control, reduce wobbles, and enhance ride comfort through load balancing and tyre selection.
| Identifier | ExFiles\Box 17\3\ Scan045 | |
| Date | 20th August 1926 guessed | |
| contd :- -4- high speed wobbles, we know that any loading above 100 lbs. is likely to effect low speed riding. Therefore we cannot go very far on this side. We have not yet been able to test an increased low pressure loading, we feel that there are possibilities in this direction. Spare wheel on the back. We made a test of high speed steering control by fitting a spare wheel on the luggage grid. The selectiveness of the steering of this car was quite perceptibly improved by this addition. This was undoubtedly due to the fact that the rear of the car held the road much better. The object of the test was to demonstrate that with a spare wheel on the back it might be possible to fit weaker side steering tube springs to counteract road shocks. Side steering tube. While friction does slight reduce road shocks of greater magnitude, it is apparent that the most hopeful avenue of effecting an improvement in this direction is the side steering tube. Attached is a report of some tests that we have already carried out. Tyres. The 6.75" tyres on 12-EX. increase the riding comfort of the car very considerably over bad roads. Taken all round, the steering with these tyres is better than with standard high pressure tyres. We have done sufficient tests to say that on very bad roads the 6.75" tyres at 35 lbs/sq.in. are slightly better than the standard tyre for road shocks. contd :- | ||