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).
Design for a shortened lower triangle link for the Spectre front suspension.
Identifier | ExFiles\Box 95\3\ scan0035 | |
Date | 11th October 1934 | |
X460T 346 GRT We should follow this up To MMS: from Da.{Bernard Day - Chassis Design} Da.{Bernard Day - Chassis Design}3/HP.11.10.34. c.c. Mr Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} SpectreCodename for Phantom III Front Suspension. Herewith is a print of N.Sch.4223, shortened lower triangle link on the front suspension. The design is of course quite unfinished but is sent to you with the idea of your making up a lower link of the length and in the position shewn, to test the principle. The steering geometry will be upset with this length of link, and it will be necessary to send you a further scheme shewing a revised steering linkage to correct the geometry. In the meanwhile we suggest that it would be of interest to test the shortened link with the existing steering so that the importance of the geometry will be indicated. The distance pieces between the triangle bearing and the crossmember are provided so that they can be varied in thickness to alter the position of the lower triangle in relation to the upper one so varying the wheel deflection and tyre scrub. As shewn the lower link is parallel to the upper one and it is intended to be tried in this position first. We suggest that the modification to the upper triangle and also the upper rubber buffer, shewing- shewn, should not be made at this moment, as the experiment can be carried out with the existing triangle and rubber. These two modifications will have to be incorporated in the modified suspension which will presumably be designed as a result of this and the improved shock damper experiment. The lower rubber buffer fitting on to the existing spring cylinder should no doubt be made now. Da.{Bernard Day - Chassis Design} | ||