![]() ![]() The current state is stored in the browser. 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. No measurements are shown for the shadow bike, but you can swap it to the front any time by pressing Swap Bikes. 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. The proportion of weight transfer the front and rear tyres experienced was assumed to vary depending on the static weight split of the car. 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. Rake- The angle in degrees of the steering neck from the vertical. These increasing motion ratios average at 1.20 and 1.01 for front and rear suspension set-ups, respectively. 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. 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. 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. 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. Calculation: -Adams uses hypotentous as its swing arm while we the horizotal distance,inorder to convert between the two we will use the front view angle: Triangle ABC: Fvsa length (horizontal) (AB)fvsl hypotenous (Ac)cos (fvsa angle)2914cos (5. What sort of vehicle/ racing formula? Off-road (loads of suspension travel) or track (open wheel or closed wheel) ![]() 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. The remaining variables fall into line with the addition of the dynamic components arms, links, knuckles, and other bolt-on parts. If you want to include chassis roll effects, things become a little more complicated. After all the mounting positions are determined in a chassis about half of the geometry has been established. 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. ![]()
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