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  1. ttx40

    Active suspension and skyhook damping

    Ugh, how embarassing...thank you for the explanation gt6r2.
  2. ttx40

    Active suspension and skyhook damping

    I assume the quadrants being referred to are those on a damper f vs. v diagram? I'm not following the energy input and energy dissipated reference: I thought the area contained in the trace is work done or energy dissipated by the damper....
  3. ttx40

    Active suspension and skyhook damping

    Thanks for the info everyone...Gt6racer2 I'm curious about your definition of an active system in particular. I'll have to think about that further to understand fully, but thank you for posting that. It seems the heart of the whole thing is the control laws that are used; I know the Lotus...
  4. ttx40

    Active suspension and skyhook damping

    I've become really interested in fully active suspension systems lately; it seems like a good corollary to learning about conventional passive suspension. Now, I don't have a background in control systems or anything like that, so my current understanding is almost nil. One concept I keep...
  5. ttx40

    Tire forces about CG

    RigTest, that was a huge help. So in a rough summary of sorts; The tire forces are a function of the loads supported by that corner of the car at any given instant. The force causes the tire carcass to distort, resulting in a slip angle. The slip angle at the tires gives rise to a body...
  6. ttx40

    Tire forces about CG

    Interesting stuff. To be honest, I'm one of those who would have thought that tires on an axle would have somewhat different slip angles while cornering due to LLT. The fact that, at the limit the tire no longer 'listens' to slip or steer is not surprising I suppose. The fact that it does...
  7. ttx40

    Tire forces about CG

    GSpeedR, I owe you a huge apology, I clearly failed to put your post into proper context. Hope you can forgive that, 'cuz your posts are always great, and written in a way that makes the topic easy to understand (which shows you really know what you're talking about). I take full responsibility.
  8. ttx40

    Tire forces about CG

    Cibachrome, Thanks a ton!! Great of you to write that up. Next time I ask a question, it will be better, promise.
  9. ttx40

    Tire forces about CG

    Ahhhh I think I got it. Really simple: I'm visualizing the longitudinal component of the left and right front wheels negotiating a right-hand turn and their relation to the CG. I can see now where the outside wheel long. component would have an anti-clockwise moment about the CG, while the...
  10. ttx40

    Tire forces about CG

    The post I read is this: "The yaw moment contribution from steer can be quite significant in situations where the turn radius is of a similar order to the vehicle track-width and wheelbase (think autocross car). There are two distinct geometric effects (ignore the tire data for a moment): 1.)...
  11. ttx40

    Tire forces about CG

    Hello all, I need help with front/rear and inside/outside tire forces about the CG in a steady state turn. If anyone can refer me to a plan-view drawing, that would be great. I(think I) know that the front wheels provide a destabilizing moment about the CG, while the rear tires give a...
  12. ttx40

    Help with damper curves

    Hello all, please pardon the very basic nature of this post. I'm looking for a good resource for reading the different types of damper dyno graphs (and it seems the number of these graphs is increasing in type). I've been told that the standard force vs. velocity chart is fairly useless, as it...

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