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Old 06-10-2008, 10:49 AM   #1
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Default Buggy wheel aerodynamics

What effects has anyone noticed running spoke wheels versus standard dish designs ?

I myself find the car tends to feel less predictable especially when running spoked fronts.
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Old 06-10-2008, 11:06 AM   #2
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I have never ran spoke wheels on an off-road car, but on my on-road car the spoke wheels will let more air under the body which can add more drag to the car.


I'm guessing that the dish wheels act as a spoiler (more of a side plate) on the front when you go to turn, instead of allowing the air to pass though. So when you first go turn the wheel is going lets say left, but the car is still going straight, so being that the wheel has more surface area it allows the wheels to catch some of the air a little better which adds that little bit of downforce. So really I would think that the spoke wheels are really more aerodynamic then the dish wheels as they allow the air to pass through instead of catching on and in the wheel.
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Old 06-10-2008, 11:43 AM   #3
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Quote:
Originally Posted by carbon madness View Post
I have never ran spoke wheels on an off-road car, but on my on-road car the spoke wheels will let more air under the body which can add more drag to the car.


I'm guessing that the dish wheels act as a spoiler (more of a side plate) on the front when you go to turn, instead of allowing the air to pass though. So when you first go turn the wheel is going lets say left, but the car is still going straight, so being that the wheel has more surface area it allows the wheels to catch some of the air a little better which adds that little bit of downforce. So really I would think that the spoke wheels are really more aerodynamic then the dish wheels as they allow the air to pass through instead of catching on and in the wheel.
Good post.
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Old 06-10-2008, 01:43 PM   #4
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The older spoked wheels would flex easier.. thus your inconsistency on an offroad track. The newer wheels may be designed better.
Rarely would you be going into a turn where your wheels are turned long enough at a high enough speed for any aerodynamic benefit to aid.

On an off-road vehicle there would be little to no ground effect benefit because the vehicles dont have any body below the tray to act upon.

on an onroad car the difference in weight most likely offsets any aerodynamic benefit to a dished wheel.

ask the velodrome oval guys if they put on wheel discs or anything...
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Old 06-10-2008, 01:47 PM   #5
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Then what else could make them feel different.
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Old 06-10-2008, 01:56 PM   #6
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material, design of wheel around axle hole, wheel ribbing, bead channel depth, bead channel width.. Color is always worth 2 tenths um the overwall wheel width may be different and this would give you a different tire profile...

basically unless its the absolute same, its going to be different. Heck we get guys complaining about wheels from batch to batch due to improper material content or improper mold cooling.
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