![]() In theory what i have come to realize is, if your tire is connected to the road with as much grip as you want you could have a suspension system made of pillows. But really the most important part is the tire and how well it is interacting with the road. I am beginning to realise that it is a system of give and take. You may want to to concentrate on one side of the vehicle or view/edit the travel in more detail. I really just wanted the program so as to help me understand specific inputs and outputs.Īfter reading carroll Smiths chapter on suspension geometry and a couple other books. You can use this as a gauge to work out the extents of the suspension travel. Basically i don't have a project and im not trying to do anything at the moment except learn as much as possible about suspension kinematics and design. You can't calculate the suspension geometry from this info - the loads will determine the area / thickness / cross section of the suspension arms necessary to carry the loads BUT suspenion geometry will always be chosen by the designer as the best compromise between tyre movement (path of the tyre centre, camber change, bump steer (if present)) and the necessary packaging to make it fit with the rest of the car. After zooming in and out and panning the drawing you may want to quickly return to a full view of the model. In answer to your question about friction / contact patches:įriction and the contact patch will determine the size of the loads going into the the tyre and hence the suspension. The remaining variables fall into line with the addition of the dynamic components arms, links, knuckles, and other bolt-on parts. Head Tube Angle Beta: Here defined as the angle between the floor behind the front wheel and the steering axis (see image above). Scroll further down and untick attached to shocks. ![]() Scroll down to Springs and click to enable. Click the pencil icon (2nd from left) Click the form icon (below the pencil) Click dimensions from vehicle. What sort of vehicle/ racing formula? Off-road (loads of suspension travel) or track (open wheel or closed wheel) After all the mounting positions are determined in a chassis about half of the geometry has been established. I am testing a single arm suspension controlled by the shock. What type of suspension are you working with ? Machpherson struts, double wish bone (A-arms) ?Ģ. Please be more specific about your goals / desired outputs and what you have to work with:ġ. If you want to include chassis roll effects, things become a little more complicated. The dynamic scrub radius is displayed below the camber read out. Download the 4-link calculator directly from Busted Knuckle Offroad This calculator is the same calculator used in the Busted Knuckle Rock Rods and Tech. ![]() If you are assuming rigid suspension links, the trig to model a double wishbone suspension is not hard - I've seen second year students cobble together an Excel spreadsheet for this in less than 2 hours. Open the Macpherson Geometry Calculator or the Suspension Geometry Calculator Click so it becomes if it isn’t already. ![]()
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