4 Bar Linkage Calculator v3.0 - Suspension Anti-Squat & Roll Center Spreadsheet

This document is a screenshot of a spreadsheet tool titled "4 Bar Linkage Calculator v3.0," used for designing and analyzing a 4-link suspension geometry. It shows side-by-side "Static Geometry" and "Bump Geometry" panels listing upper and lower link frame-end and axle-end coordinates (x, y, z in inches), link vectors, lengths (upper 57.697 in, lower 54.019 in), unit vectors, intercepts, roll points, slopes, and link force (2473 lb). A "Geometry Summary" reports Anti-Squat of 103.958%, Roll Axis Slope -0.0326 (Roll Understeer), Roll Center Height 30.862 in, Roll Axis Angle -1.867 degrees, and Instant Center X/Z axis positions of 67.013 in and 21.623 in. A graphical plot displays the linkage in side view with Bump and Droop buttons. Below are data tables: a Side View table of front and rear tire x/z coordinates through 0-360 degrees in 15-degree increments, plus coordinate pairs defining IC Trace Upper, IC Trace Lower, Anti-Squat Line, Anti-Squat CG, 100% AS Line, and Roll Axis, and a Top View section listing upper link, lower link, and IC trace coordinates with an 80.00 offset. The document contains no vehicle-specific year, make, or model information; it is a generic suspension design calculation, presumably being applied to the uploader's project.