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).
Propeller shaft spindle test, comparing a Phantom III R.R. shaft with a Bentley Hardy Spicer shaft.
| Identifier | ExFiles\Box 94\4\ scan0124 | |
| Date | 7th July 1936 | |
| 4337 To Hs{Lord Ernest Hives - Chair}/Gry{Shadwell Grylls}: He/WB.{Mr Brazier/Mr Bell}16/KW.7.7.36. Propellor Shaft Spindle Test. Comparison between Phantom III R.R. (G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 82089) and Bentley Hardy Spicer Shaft. With the shaft suspended by its rear axle coupling, a load was applied to the sliding-gearbox-coupling, to which a torque arm was also attached. The frictional torque in relation to the thrust load of one of each of the above types of shaft - both shafts were new - was ascertained. From the results, shown on the attached chart, the R.R. shaft proved to be better than the Hardy Spicer shaft. Incidentally, a rough check was taken of the Hardy Spicer shaft off B-56-BN{W.O. Bentley / Mr Barrington}, before refitting to the chassis, the torque of 38 lbs/ft. at 120 lbs. thrust load being the same as for the new shaft. Hs{Lord Ernest Hives - Chair}/W.Bell! | ||