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).
Various brake complaints on Bentley motor cars.
| Identifier | ExFiles\Box 84\2\ scan0205 | |
| Date | 10th December 1934 | |
| x206 To Hd.{Mr Hayward/Mr Huddy} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KW.10.12.34. Brake Complaints - Bentley. We are getting a number of brake complaints to deal with on the Bentley, and it would be of material assistance to us if information on this subject could be classified. The complaints we know of at present are :- (1) Tramping when the brakes are applied at high speeds. (2) A brake judder at about 40 m.p.h. when the brakes are flicked on. This complaint we know is an unusual one, and in fact we have never experienced it ourselves if the brakes are correctly bedded and the rest of the system is in order. We know of one case however where it took place on a car before the brakes had bedded themselves in, but disappeared with continued running. (3) Juddering when the brakes are wet. This of course is an axle vibration which occurs just as the car is coming to rest. We again believe that the degree of trouble experienced is influenced by the bedding of the brakes. We know it can happen on most Bentleys, but on the other hand unless somebody makes a point of braking hard to bring the car to rest immediately after the brakes have been washed, it should not take place. (4) Servo thumps. We should like to know whether the swinging arm adjustment provided continues to eliminate thumps after the car has been in service for some little time, and whether there are any thumps which cannot be cured by this adjustment. (5) Brakes inefficient when wet. We are interested in discovering how many customers actually complain about this feature. The great majority of cars to-day are fitted with M.R. lining, and as far as we know they are likely to suffer just as badly as we do. | ||