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).
Tests conducted to resolve radiator movement issues by modifying the frame and mounting.
Identifier | ExFiles\Box 19\5\ Scan052 | |
Date | 11th April 1930 guessed | |
-2- We have carried out a considerable amount of work. Rn.{Mr Robinson} has completed a whole series of tests. The first point of interest was that we found we could reproduce the condition by driving the front wheels on the dynamometer drums with small cams fitted to the drums. We could also, by means of the Chronograph, get the speed and amplitude of the movement. When I come out I will bring you a whole picture of these charts which I think you will find interesting. With the help of E.{Mr Elliott - Chief Engineer} and Da.{Bernard Day - Chassis Design} we made extensive alterations to the frame to try to overcome the radiator movement. We put in real big tubes and crosses and the result as regards the movement of the radiator, was disappointing. The tests shewed that the big feature in connection with this job was the type of body and the attachment of the body. This is not surprising when we realise that all chassis are consistently free from any signs of this trouble. It is not until we put the body on that it is ever noticed. The best cure we have found for avoiding the radiator movement is to mount the radiator on the single centre sphere and control it by rubbers on each side. With this arrangement the radiator remains absolutely steady and we believe that the frame movement is also less because we have broken up the system. Our tests so far have shewn that with the stiffer frame we get improved steering and also if we can get the | ||