BillyShope
Automotive
The following is for a RWD with beam axle:
As I was preparing a new 3link spreadsheet for my site (Page 40), I realized that it could also be used with triangulated 4link and torque arm suspensions. While neither of these are normally considered 3links, if you think of the triangulated pair in a triangulated 4link as a single centrally located link and if you think of a torque arm as being the extended mount for a link having zero length, you end up with...as far as the spreadsheet is concerned...a 3link.
The spreadsheet then yields the angles of the remaining links so that the driveshaft torque is dynamically cancelled. For a conventional 3link, 2 links are chosen for the asymmetric angles.
The spreadsheet essentially aims link lines at a line parallel to the SAE Y axis from 3 input points. The target line is set at a height corresponding to the antisquat input. The line is then rotated about a midpoint and the rotation angle iterated until the necessary moment and force balances are achieved.
As I was preparing a new 3link spreadsheet for my site (Page 40), I realized that it could also be used with triangulated 4link and torque arm suspensions. While neither of these are normally considered 3links, if you think of the triangulated pair in a triangulated 4link as a single centrally located link and if you think of a torque arm as being the extended mount for a link having zero length, you end up with...as far as the spreadsheet is concerned...a 3link.
The spreadsheet then yields the angles of the remaining links so that the driveshaft torque is dynamically cancelled. For a conventional 3link, 2 links are chosen for the asymmetric angles.
The spreadsheet essentially aims link lines at a line parallel to the SAE Y axis from 3 input points. The target line is set at a height corresponding to the antisquat input. The line is then rotated about a midpoint and the rotation angle iterated until the necessary moment and force balances are achieved.
