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).
List of advantages for a resilient spring wheel.
| Identifier | ExFiles\Box 143\3\ scan0065 | |
| Date | 9th January 1940 guessed | |
| 1204. - RESILIENT SPRING WHEEL ADVANTAGES - Greater resiliency, simplicity, strength and durability. Rifle bullet proof. The wheel rims run central, load is equally distributed under all conditions. On account of the large proportion of spring weight, consisting of both flanges and the outer rim portion, an increased mileage per gallon (approximately 20%) is obtained. All the springs are shock absorbent, facilitating easy steering. The springs are not exposed to any stress reversals and cannot develop fatigue. No inflation or testing of air pressure required. Tyre bursts are impossible. Less road friction. Lower replacement costs. Spare Wheel not necessary. Designed on mass production lines. | ||