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Showing results for tags 'suspension'.
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Hello! I am making a racing game and now I am interested in few parameters of a specific car - BMW Z4 M Coupe. I am using it for testing my physics wrapper and now I need to get few parameters. 1. I need the normal weight distribution of that car between rear and front. This value is needed in %. 2. I need stock suspension parameters of this car: spring force and damper force. My suspension model doesn't take in any other values assuming that it is not damaged;) If anybody can get those parameters for me, I'd be really happy:)
If you feel the car leans to one side, don’t doubt yourself, it’s possible, the car is indeed not balanced. Here I need to introduce a new concept -- EHC. The task of the self-leveling suspension(EHC) is to bring the vehicle ride height at the rear axle back to the target level if the load changes. The height sensors provide ECU with information on the heights of the left-hand and right hand sides of the vehicle. If the heights are outside the specified tolerances, the system intervenes using the air supply unit to set the nominal ride-level height. After replacing the sensors or when you feel car is leaning, we need to do readjust EHC. Notes: If the car is M/T, need to step on and release clutch pedal. Car stay still. Must use EPB For M/T, set it at N For A/T, set it at P It’s a E66 chassis in my case, and the tool name is in the comment. Steps: 1. Choose the correct model: BMW-7 series - 7`_E65/E66/E68 - chassis - EHC - Live data 2. Only choose 4 options to read live data: battery voltage(RR), battery voltage(LR), Deviation(RR), Deviation(LR). So that we could confirm that if the leaning is there and which side. 3. Go back to choose Service Functions - EHC - Adjust EHC, and then input tire size. (Tire size found on the tire, e.g. 185/65/R14, 14 is what we input) 4. Measure and input the height of both rear tire(from the button of tire to the button of wheel arch. 5. When it says adjust succeed, the car still need some time to change the height while driving, it would not change to the preset height immediately.
Angled cornering in a car
Teddy123 posted a topic in General Car DiscussionHello, To start this off I am NOT a car expert but I do find them very interesting. here is the situation: A sports car is driving around a right turn on a track going pretty fast, would it be beneficial if the suspension on the right side of the car got lowered (either by hydraulics or suspension) so that it could make the corner at a higher speed and prevent oversteer (drifting around the corner)? wouldn't the now angled car have more traction around the turn? could this also reduce the momentum from the hypothetical straight that the car was driving on previous the turn? I am happy to learn so please if you can correct/help me please do!
Hello! I am making a car simulation and currently use Range Rover Sport S 2013 as the simulated car. However, there is a slight issue - I don't know what suspension does the car use. I have heard that in the front it has double wishbone suspension, but on the rear - live axle. However, I haven't confirmed this information. What I hope is that some of you could confirm or correct this info so that I could set up my simulation correctly. Also, if possible, I'd like to find out what are the default spring settings of the given car: stiffness (in N/m) damping (in N/(m/s)) rest length (in m) caster (in degrees) All of those numbers I need for front and rear seperately. Thank you!
Few questions about Koenigsegg CCX
adriansnetlis posted a topic in European ManufacturersI am working on custom vehicle physics wrapper for games. As a test subject I've taken Koenigsegg CCX. I am comparing my wrapper's results to real-life ones. I've run at 2 problems. One of them is suspension forces and second one is height of CG. I am using Bullet physics for my game, but I have created custom gravity setup to simulate downforce and weight transfer. For suspension I use basic PID(proportional-integral-derative) controller. So my questions are: What is spring rate and damper strength of stock suspension of Koenigsegg CCX? Best would be answer in kN. How high is CCX's centre of gravity from it's wheelbase? Best would be answer in cm or m. Thank you for your advices!
Ford focus rattles over bumps
Patto22 posted a topic in Repairs & MaintenanceI have a 1999 ford focus which rattles when going over bumps but is fine on smooth roads. Have taken it to get checked out and the garage gave me a few things I need to get sorted. The two main things they said were urgent were both front suspension links have gone and the near side coil spring. Do any of you know if that would be the cause? Don't want to spend the money getting it fixed if its not actually the reason! Before anyone says, I didn't ask the mechanic as he was very pushy and made me feel uncomfortable! Would like an impartial opinion before taking it elsewhere! Thanks!