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).
Conclusions on chassis design, shock dampers, and tyre pressures for 20.HP and 40.HP models.
| Identifier | WestWitteringFiles\I\October1922\ Scan67 | |
| Date | 13th October 1930 | |
| (2) From our experience we find these conclusions are founded on fact but this is a matter more of degree. Naturally this is what we might have expected, though we did not fore-see that the degree would be at all prohibitive. In fact we were trying to reduce the friction in conjunction with the tyres then available, and using the single way type or progressive shock dampers. In conclusion it seems that we are changeable on this * subject, and though there may be reasons, I cannot help thinking that the best policy would be to scrap thick leaf springs, - to have no more controversy about it, as we have before concluded that the money involved is not sufficiently great for us to alter our policy of making our chassis as good as we can * under the circumstances in which we are situated. At the moment the most important of all for satisfactory riding is to keep the tyre pressures low (about 40 lbs.) which is reported to give even better mileage than the higher pressures. This is Mr. Hives most careful conclusion for both 20.HP. and 40.HP. Rn{Mr Robinson}, with straight sided cord tyres. R.{Sir Henry Royce} | ||