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Ride Harmony Goes Racing! 3 Elements to Consider: Sway bars, Bump stops, and Alignment
#RideHarmony #FCMElite #RaceTuning
In a previous video I covered the 3 Keys to Achieving Ride Harmony, my term for a smooth, 'coherent' (thanks Andrew!), fluid, and FAST approach to optimizing a suspension that can handle the road's bump and dips (and more than one of them at a time!).
In that video, a commenter asked a great question along the lines of 'wouldn't Flat Ride make a vehicle more oversteer oriented?' (to paraphrase). Meaning, wouldn't it tend to want to spin out or have the rear end come out more than you could control?
The answer is yes it could BUT:
1) You can balance a car's handling by using a reasonably-sized front sway bar and fairly small rear sway bar. Many high-performance cars from the factory already do this AND incorporate the benefits of Flat Ride! Witness BMW M3, Porsche 911, Corvette Z06, etc. But they aren't necessarily telling you how they're incorporating Flat Ride and sway bars or other aspects of the suspension to get a neutral or predictable handling.
2) You can utilize elements like bump stops (using a longer, firmer, progressive rate front bump stop with a softer rear bump stop. Again, the factory has done this for years if you watch my various videos on bump stops and also analysis videos for various suspensions including aftermarket (any of my H&R Street Performance coil-over based videos). Also remember that packers are very simple and quick tuning aids to allow more or less bump stop engagement which lets you make small changes to the spring rate front or rear. VERY useful! Same with spring rubbers or 'bump stop donuts,' made from the same material but placed inside a spring coil instead of on the shock or strut shaft.
3) You can also choose alignment setting, such as more rear negative camber than front, along with adding rear toe-in to keep a car from having too much oversteer.
Often a factory engineer will choose these factors, plus more sophisticated aspects of the suspension like the roll centers, scrub radi..
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