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 braking effects, comparing an equalised system with the Hispano braking system.
| Identifier | ExFiles\Box 69\2\ scan0073 | |
| Date | 20th May 1924 guessed | |
| contd:- -2- Again, if the co-efficient of friction of the road surface varies on any of the four wheels, when the brakes are applied hard, this will spoil the equalised braking effect. It also can vary with speed. If the car is travelling fast and the brakes are applied, a proportion of weight is flung on to the front wheels and relieved from the rear wheels. So that even though the braking effort is equalised, the rear wheels will skid much more easily than the front. The Hispano differs from us considerably. On the Hispano, only the two front brakes are applied equalised. There is no equalising between the front and rear or between the two rear brakes. The proportion of front and rear braking can be varied by the adjustment on the Hispano. It is possible by adjusting the wing nuts either to get - all front, all rear or any proportion. When you have tired the Hispano, it has been after we have carefully adjusted the brakes to obtain the best braking effect. Hs.{Lord Ernest Hives - Chair} | ||