Explains suspension characteristics and suspension geometry coefficients, providing a unique and in-depth understanding of suspension design not found elsewhere. Suspension calculations; Simulate Your Car's Suspension. Suspension geometry characteristics of a live axle are as follows:. Suspension calculations include coil and leaf springs, anti-roll bars, animated suspension geometry analysis with roll center and instant center (for dual A-arm and strut suspensions). Basic suspension geometry - get going with the evaluation version: Basic suspension geometry - using the example from Herb Adam's "Chassis Engineering" Converting 3D Coordinate Measuring Machine data to SusProg3D upright coordinates: Converting 3D Coordinate Measuring Machine data to SusProg3D strut dimensions: Recirculating steering calculations The illustrations above show how the location of the instantaneous center can vary significantly with suspension geometry. Wheel camber is zero irrespective if the vehicle is stationary or moving round a bend in the road. If one wheel moves over a hump or dip in the road then the axle will tilt causing both wheels to become cambered. This is where we specify the controlling dimensions. Your front suspension geometry is defined by the following six variables which are defined as: Offset-- Centerline of top of steering neck to centerline of top of fork tubes. Here though, our interest is the interaction of slip angle with dynamic toe. The basics of suspension geometry, as well as a diagonally identical wheelbase, spring rates, and wheel offset, must be adhered to if you want your car to handle well. Calculate the instant center on your drag car suspension geometry. 2"| Page" Figure"2:Less caster,lesscaster"lead " " Figure2b:Greatercaster,greatercasterlead % When%cornering,% Z Á ] P Z v } v ] v P P [ } u ] v } Z } v ] v P ( } X d Z } v ] v P Figure 2 When the car is cornering at racing speeds, steering Ackerman geometry is modified dramatically by the tyre slip angles, as per Figure 2. 1. Rake-- The angle in degrees of the steering neck from the vertical. 2. This allows us to specify the swing axle and roll centre dimensions, which will then "back calculate" the wishbone chassis mounting heights. This places the instantaneous center on the suspension side of the wheel. Select the Geometry tab, then each of the items in turn. Unequal Length Double Wishbone. The top illustration shows the upper control arm slopping in, toward the center of the car. Config. You enter heights above the ground and distance ahead of the front axle for up to 6 holes for all 4 brackets for your car, or any number of cars. Working through suspension geometry will tell you a lot about your rig and help you determine if there are certain configurations that could cause interferences or issues. suspension geometry. The 4-Link Calculator lets you input, view, save, analyze and compare your 4-Link rear suspension geometry. As its name aptly describes, the unequal length double wishbone suspension, shown in diagram UEL1 below, consists of two wishbones of different lengths (The top is shorter) connected to the chassis inboard and the upright/knuckle outboard. With racing tyres at maximum lateral G, we might be looking at 5,6,7or 8 For Inquiries Email: Kevin Slaby tech@baselinesuspensions.com Shipping Note: Kits are usually shipped the day AFTER the order is received. Specify the instant centre location as "Swing axle lengths and roll/pitch centre heights". The suspension travel analysis allows you to see what happens to the suspension during travel.