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).
The torsional flexibility measurement of a Buick transmission system and comparison with a Spectre rear axle.
| Identifier | ExFiles\Box 124\3\ scan0372 | |
| Date | 25th November 1935 | |
| X1049 To Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Smth.27/KW.25.11.35. Buick - Flexibility of Transmission. We have made a direct measurement of the torsional flexibility of the Buick transmission system. The system includes the rear axles, propellor shaft, gearbox and clutch spring centre. We find that for a torque of 1000 lbs.ft., applied to one of the rear hubs, the total wind-up is 24° measured at the wheel. This is with the car in 2nd gear. By calculation the rear axle of the SpectreCodename for Phantom III winds up 7° under the same torque. This is by far the most flexible item in the transmission. Hs{Lord Ernest Hives - Chair}/Smth. | ||