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).
Standard test procedure for measuring rear riding comfort using water spillage from a container.
| Identifier | ExFiles\Box 55\3\ Scan265 | |
| Date | 25th June 1926 guessed | |
| REAR RIDING COMFORT - STANDARD TEST. Ordinary good main road with a slightly wavy surface. Test stretch 3/4 mile long. Road speed 23 m.p.h. [Diagram annotations:] Final level 20 HP. .270" Initial water level. .12 Final level 40/50. .570" Dimensions of container 2.0" dia. 2.60" high. Initial quantity of water added - 275 c.c. Quantity of water lost 20 HP. .56 cu.ins. " " " New PhantomCodename for PHANTOM I .4 cu.ins. Three containers are used fixed in a tray to the seat boards at the back. The mean of all the containers for two or three runs is taken. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||