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).
Outlining experiments and investigations into front end movement and shake on a vehicle.
| Identifier | ExFiles\Box 100\1\ scan0251 | |
| Date | 29th June 1939 | |
| 446 Rm{William Robotham - Chief Engineer}/APM. Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm{William Robotham - Chief Engineer}4/R.29.6.39. FRONT END MOVEMENT - B.V. It was agreed that the experiments on the front end shake should be used on the dynamometer drums with ¾" cams, and the measurements should be taken with the Chronograph. It was agreed that 2.B.50 should be allotted for this purpose fitted with an aluminium engine. It was decided that the car should be tested in standard condition, and a complete frequency amplitude curve taken of the car for vertical frame deflection and also for torsional deflection. A similar curve should then be taken for the car with one variable altered at a time. It was suggested that the following might be considered to be useful variables:- (1) Type of Tyre and Tyre pressure (2) Shock Damper load. (3) Radiator and wing mounting. (4) Engine mounting. (5) Body mounting and fixing of dashboard to body. (6) Frame stiffness. (7) Bumper Bars. (8) Steering variations. While investigation of the front end shake is going on, we should also like figures to be taken for the movement of the steering column and movement of the windscreen, and an effort made to improve rigidity at these points. It might also be possible to test out the rubber steering box mounting, and ascertain if this reduces the level of the noise coming through the column. Rm.{William Robotham - Chief Engineer} | ||