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Build a functional Splitter for FD3S using honeycomb ate

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Old 06-19-17, 02:24 AM
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Build a functional Splitter for FD3S using honeycomb ate

[FIND some thing form not thing)

This is how aerodymanic change racing, and lately in time attack theme~
Since in my class we dont have too much regulations on aero, so I decide to take full advantage of it

Instead of plywood, I use aluminum honeycomb plate, with size of 180cm X60cm is even lighter then my sard carbon fiber wing which is only 170cm wide

Inorder to max the air venturi affect , so I place,my splitter very low to the ground (only 5cm from ground) and to create max surrface area for downforce I even use a square design, and I know this dont flow
with line of FD

Then place a lip between splitter and bumper, so no air can go in there create turbsnce and drag

And last not the least, test it with my 90kg crew, if this can hold his weight, it would be find on my 190km topspeed

Let me know what all members think, and show ur design also 😀
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Old 06-19-17, 03:27 AM
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Good job!

Saw your post on the Time Attack Builders Facebook group.

What angle of attack does the splitter have?

Also, perhaps you could consider adding wheel well diffusers as well? Not too hard to do with your design. Not sure how much for a difference they'd make.
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Old 06-23-17, 10:50 AM
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Originally Posted by Jarik View Post
Good job!

Saw your post on the Time Attack Builders Facebook group.

What angle of attack does the splitter have?

Also, perhaps you could consider adding wheel well diffusers as well? Not too hard to do with your design. Not sure how much for a difference they'd make.
Thanks

Splitter is always 180 degree

Will try few other thing before wheel diffuser
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Old 06-23-17, 06:03 PM
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you don't want to choke the underbody airflow need enough to produce the low pressure needed for the diferential to produce down force..
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Old 06-24-17, 08:25 AM
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Originally Posted by ablesnead
you don't want to choke the underbody airflow need enough to produce the low pressure needed for the diferential to produce down force..
According to competition car aerodynamics
Of this book , my splitter higher is pretty close to rule of thumb
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Old 07-07-17, 11:44 PM
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Yeah, agree with that. You want it as close and flat to the ground without actually touching the ground.

Think some people add a tiny bit of downwards angle of attack just to prevent inducing lift due to flex or due to the car squatting under throttle. If you have stiff enough rear springs, and a strong enough splitter, don't think that should matter though.

Out of curiosity, what spring rates are you running?
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Old 07-08-17, 06:40 PM
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I've several square meters of al honeycomb around the place, I'd not use it for splitters, unless you like replacing it a lot from grounding. On other cars where I used it, it's been for crash boxes.

Usual material I've used in that application is a combo of kevlar and some sort of poly honeycomb the composite places sell...along with a wooden leading edge to avoid severing arteries and allow a bit of impact resistance.
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