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).
Tyre pressures, road holding, steering issues, and shock dampers, signed by F.H. Royce.
| Identifier | ExFiles\Box 67a\1\ scan0140 | |
| Date | 16th April 1926 guessed | |
| -2- finds them pumped so hard (as instructed by Dunlops) that the cars are dangerous, uncomfortable and noisy, much of this is at once avoided by the medium pressure tyres. I believe there is little or no difference between the medium pressure and high at the same pumped pressure, say 40 lbs., but the medium pressure tyres will insure that the pressure is what we so desire. An aspect of the situation is that there are several different road conditions, some of which are much more frequently met than formerly. If you were in France you would crave for larger and lower pressure tyres, because pot holes, etc. make one pity the passengers, the body (car) and the chassis. With these also the car (1) holds the road much better, ) These 3 represent (2) the brakes are better, ) far more important (3) the steering has less shocks. )dangers than steering wobbles. Steering wobbles I understand are on all cars under the same conditions of tyre pressure etc. They have been reduced to much less importance by shock dampers. We know of no one better than others. We have given the most practical solutions we know, i.e. a lighter front axle (very slow to appear) and the most effective shock dampers known. Yours ever, (sgd.) F.H. Royce. I await the report on springing experiments from Da.{Bernard Day - Chassis Design}, but am sending a few notes of recent thoughts. R.{Sir Henry Royce} | ||