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 mechanical efficiency of the La Salle steering box under static conditions.
| Identifier | ExFiles\Box 17\4\ Scan071 | |
| Date | 11th June 1934 | |
| 11.6.34. Mechanical Efficiency of La{L. A. Archer} Salle Steering Box. The table below shows the efficiency of the La{L. A. Archer} Salle steering box measured in forward and reverse drive under static conditions. The ratio of angular movement of the steering wheel to that of the pendulum lever is 19.7 at the centre of the travel. The efficiencies below are measured at mid-travel. Load on Pendulum Lever - lbs. Pendulum Lever Torque. lbs. ins. Efficiency of Transmission Forward Reverse. 100 550 63.5 63.7 150 975 67.3 69.3 200 1300 70.7 72.0 250 1625 70.0 71.7 300 1950 70.7 72.6 350 2275 69.9 72.3 400 2600 70.7 72.8 | ||