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).
Testing the parallel control for 4-wheel brakes on a front axle.
| Identifier | ExFiles\Box 73\2\ scan0070 | |
| Date | 12th July 1923 | |
| R.R. 493A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} X9940 EXPERIMENTAL REPORT. Expl. No. 9940 REF: Hs{Lord Ernest Hives - Chair}/LGS.11.23. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to Rg.{Mr Rowledge} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} S E C R E T. 4-WHEEL BRAKES. On the chassis fitted with 4-wheel brakes we have tested the parallel control for the front axle. The car was run with the Brake Actuating Mechanism arranged in the original manner. We found the action of the brakes smooth and effective - both forward and retard. The results were equivalent to those we obtained with the torque arm which was suggested by Rg.{Mr Rowledge} We are arranging now to remove the top rod of the parallel control and to use the lower rod as a radius rod - the operating mechanism will be arranged to suit. Hs.{Lord Ernest Hives - Chair} | ||