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).
Continued discussion on direct braking, servo torque multiplication, and brake distribution.
| Identifier | ExFiles\Box 16\3\ Scan035 | |
| Date | 2nd January 1929 guessed | |
| contd :- -2- The actual direct braking we are using is only 6% lower than on 14-EX. We think that to use more direct braking than on 14-EX gives the foot pedal an unnecessary feeling of sponginess. We think that the servo on which these tests were carried out is a very good sample as particular care was taken with it; it is probably above the average. We should like some permanent scheme to get the correct distribution with the measured torque multiplication of the servo. 'SS{S. Smith}' BRAKE DISTRIBUTION - ACCORDING TO N.SCH.2539 - ASSUMED SERVO TORQUE MULTIPLICATION 2.5. Direct 28.5 Servo to front 20.7 X 2.5 51.8 Servo to rear 24.8 X 2.5 62.0 % to front 43 1/2 % TO N.SCH.2539 - MEASURED SERVO TORQUE MULTIPLICATION 1.43 Direct 28.5 Servo to front 20.7 X 1.43 29.6 Servo to rear 24.8 X 1.43 35.5 % to front 38% 'SS{S. Smith}' CARS WITH EXPL: MODIFICATION. Direct 22.5 Servo to rear. 44.3 Servo to front. 53.3 % to front 44% HS{Lord Ernest Hives - Chair}/An. | ||