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Author Topic:   Spoiler Effect on Handling
Cowboy Carson
Dirt Roller

Total posts: 10
posted May 11, 2005 08:52 AM  
Background: 2,800# Limited Late Model (front clip car), leaf spring, on a 3/8 mile high-banked track. Lap times and speeds run around mid-19 seconds to low 20-seconds, lap average speed low 70s mph.

What I'm wondering is, just how much does a rear spoiler help in the handling of the car? and if it does help, how tall should the spolier be, and set a what angle?

Thanks all

GO 24
Dirt Freak

Total posts: 366
posted May 11, 2005 10:07 AM  
The best way to relate to a spoiler is drive down the interstate at 70mph & stick your hand out the window..sounds funny but it's true. I'd go with the standard 8in tall and at a 45 degree angle. I personally lost the right side of a spoiler once after the wall jump out and bit me, the guys said it was worth 1.5sec a lap which of course is a ton!

Cowboy Carson
Dirt Roller

Total posts: 10
posted May 11, 2005 10:17 AM  
Go_24, gotcha and I appreciate the reply and the analogy.

I wonder approximately how many #s of force against that is? And if it's enough (#s that is)to adversely affet the handling one way or another.

That 1.5 second/lap. Were you a second and a half SLOWER or FASTER after loosing the spoiler (I'm assuming slower)?

[This message has been edited by Cowboy Carson (edited May 11, 2005).]

GO 24
Dirt Freak

Total posts: 366
posted May 12, 2005 09:00 AM  
Oh yeah, much slower...basically lost all rear bite. They play a pretty big part in handling, we will adjust ours depending on track conditions...lay them back alittle further on big wide sweepeing tracks and vise versa on tighter smallers tracks.

Cowboy Carson
Dirt Roller

Total posts: 10
posted May 12, 2005 09:04 AM  
Again, Thanks GO_24. Last question please. Are you using a Lexan spoiler, or a piece of aluminum? If Lexa, approximaely how thick is it? Thanks again

GO 24
Dirt Freak

Total posts: 366
posted May 16, 2005 10:47 AM  
I use Lexan, it's a nice safety precaution...a good example would be if your slowing down to go in the pits you can kinda throw a hand up & wave alittle.
I'm not quite sure of the thickness, we pick ours up at www.sardesonracing.com in a kit form.

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