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Recent content by V4641

  1. V4641

    Help with spring rate.

    It looks like it does matter. Changing the height of the strut changes the suspension geometry. Intuitively, there must be a proper height for the strut, and the ride height set with spring preload.
  2. V4641

    Help with spring rate.

    I don't lower the car for competition, but since we're on that subject, with a strut like the RideTech, where you can adjust ride height independent of pre-load, what is the correct way to set the ride height? Do you set the pre-loads the same and adjust the height of the strut? Or do you set...
  3. V4641

    Help with spring rate.

    Brian, thank you.
  4. V4641

    Help with spring rate.

    Brian, I'm not an engineer, so I have no idea how to draw a free-body diagram. :) I do see that there is no spring rate variable in the equation, but it's hard for me to understand how the springs have no affect. That is, if I replaced the springs with a solid rod, would the car stop in the...
  5. V4641

    Help with spring rate.

    It feels like I'm hitting the stops, and I'm not convinced I'm not getting into them, but now I'm wondering if I could just be overloading the front tires without getting into the stops. I see spring rate isn't taken into account for calculating the weight transfer. Help me understand why a...
  6. V4641

    Help with spring rate.

    Brian - Thanks for the quick reply. The CG height was a typo. The CG height I estimate to be 20 inches. The unsprung weights are per corner. My front corner weights are: LF: 1095, RF: 1048 Tim, the spring rate is 325 lb/in. with ~ 0.5" of preload. My calculations were as follows for the...
  7. V4641

    Help with spring rate.

    Hello, I'm having a little trouble with a car I'm trying to setup for autocross. The issue is, I'm getting into the bump stops under braking which is hurting my braking performance. I think I've even hit the stops on hard cornering as well. Vehicle Specs: Total weight 3970 pounds (all fluids &...
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