Ride Height: Difference between race cars and road cars?

  • Thread starter Thread starter rams1de
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rams1de

rams1de

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If I go nose up on Z4 GT3 I get better straight line speed than going nose down and when using level settings, low RH gives better straight line speed than high.

But, when I run a test on BRZ I find the opposite, nose down is quicker. Add a flat floor and nose up is quicker (albeit much slower than any RH settings without the part fitted).

Do people find this is generally the case or is one of these cars out of whack with rest of game?
 
Suspension bottom out when nose down at close to top speed ? Try sway or lane change quickly, best place to test at SSRX. Spring rate and downforce needs to be matched.
 
I used Route X to test and avoided the extremes of settings with no more than 15mm rake. Having tried a few more cars it looks like small amounts of rake have negligible effect on straight line speed without aero but nose up on cars with aero are definately faster.

As Dolhaus suggests it must be related to a change in aerodynamics, creating lift or reducing drag perhaps.
 
I suspect that if the car has significant front downforce the nose will be pushed down. If the nose starts higher, once it gets to high speed the nose is pushed down into a more ideal, level position. If the nose starts lower it could start dragging once it reaches speed, causing drag and losing speed. This would be dependant on initial clearance, spring/damper stiffness, amounts of downforce generated and the speeds you are achieving. Ideally for a high speed car you want to be using as little downforce as possible because it creates huge amounts of drag and makes your car more resistant to going faster
 
DolHaus
I suspect that if the car has significant front downforce the nose will be pushed down. If the nose starts higher, once it gets to high speed the nose is pushed down into a more ideal, level position. If the nose starts lower it could start dragging once it reaches speed, causing drag and losing speed. This would be dependant on initial clearance, spring/damper stiffness, amounts of downforce generated and the speeds you are achieving. Ideally for a high speed car you want to be using as little downforce as possible because it creates huge amounts of drag and makes your car more resistant to going faster
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Except the rear generally has significantly more downforce, meaning it gets pushed down even harder.
I'm sure if you test you will find logic has nothing to do with it.

I'll bet you can repeat these results with a car that has a softer rear, and lower rear than front, all while having more aero on the rear to boot.
 
CSLACR
Except the rear generally has significantly more downforce, meaning it gets pushed down even harder.
I'm sure if you test you will find logic has nothing to do with it.

I'll bet you can repeat these results with a car that has a softer rear, and lower rear than front, all while having more aero on the rear to boot.
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I'm just guessing really, I'm not into top speed cars
 

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