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  1. yawpower

    Force-based roll centres vs geometrical roll centres

    I think the circle track article is referring to aligning the roll axis of the front and rear suspension, with the idea that if they are not aligned, something will have to flex for the body to roll. What actually happens is roll steer, not flex of the body/mounting points. The end result of...
  2. yawpower

    Roll Center...Again

    Hi Everybody, I am currently working with a production based road race car with SLA suspension front and rear. Class rules do not allow the suspension pickup points to be moved, and so the geometry is a mess. The rear is fine, with the roll center at about 2.25" and very little movement...
  3. yawpower

    Yet more questions on 4-bar design...

    Hey there autocol, Is this a race only vehicle with rod ends? If so, adding a 5th link (4 link plus panahrd) will make for one ill handling car. What's the application? PY
  4. yawpower

    Synthetic Transmission and Differential Fluids

    Manufacturers of synthetic fluids all claim that friction is reduced to the degree that drivetrain losses are reduced, and a power increase can be realized at the wheels. Is this simply marketing BS? Have any of the auto manufacturers done testing to validate this? PY
  5. yawpower

    Racing Damper Optimization

    I have no experience with FWD, or rally cars, still I assume that the same principles apply. To me, turn in under braking implies diagonal weight transfer. The outside front shock will be compressing, while the inside rear shock will be extending. If this were a road race car, I would want to...
  6. yawpower

    Racing Damper Optimization

    Oops! I forget something. All the above assumes that the weight transfer due to springs, bars, roll centers, sprung mass results in a neutral car. (On paper at least!) Paul Yaw
  7. yawpower

    Racing Damper Optimization

    Anyone here like to discuss their approach to damper setup for non/low downforce racing cars? This is something no-one ever wants to talk about because they either haven't a clue, or they feel they have an advantage, and do not want to give it away. I propose that discussion amongst race...

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