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  #21  
Old 11-02-2018, 12:36 PM
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I started doing some aero research, I can add here or start a new video thread. Don’t want to hijack your thread.

Interesting vid,

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Last edited by rtj; 11-02-2018 at 12:43 PM..
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Old 11-02-2018, 12:47 PM
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Your first impression is this will be disappointing, but this guy is thinking.

Two interesting comments:

I always think of wing-in-ground-effect as increased lift for flying machines. But, for downforce it makes sense it will augment (as he says).

Also, he talks about the big vortex that mfain mentioned on page 1 benefitting brake cooling. I never realized that before. Although the video never mentions brake cooling, votices have low pressure cores. He does insert his cfd plots showing the big vortex.

He talks about rotating the drag vector, but I’m a bit skeptical in this application.



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Last edited by rtj; 11-02-2018 at 01:08 PM.. Reason: Spelling.
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  #23  
Old 11-02-2018, 01:08 PM
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Nice overview.

Here is his channel. No use linking them all here. That way he gets clicks.


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Last edited by rtj; 11-02-2018 at 01:11 PM..
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  #24  
Old 11-02-2018, 02:40 PM
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Quote:
Originally Posted by vette427sbc View Post
...................

Another thing worth noting is to somehow employ wheel spats... I believe these help with drawing air out through the spokes (assuming you dont have a tire to fender gap )

I did a somewhat similar/cruder thing on my C4 in the mid nineties. I just made a Gurney flap sorta thing at the front edge of the front wheel well lips to create a (bruteforce) low pressure area to help evacuate the air out of the wheel wells. I have the usual air intakes and hoses to feed air to the front rotors, and just added the flaps to increase the pressure gradient to help pull out the air.
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Old 11-02-2018, 04:13 PM
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There is a "sticky" written by Ron Sutton on Aerodynamics for Track Cars on the Lateral-G forum. It is fairly basic, and in plain English - written from a practical application point of view. I guess it is permissible to post a link. If not, Admin can delete. [Only registered and activated users can see links. Click Here To Register...]

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Old 11-02-2018, 04:14 PM
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Default BRILLIANT -- Andrew Brilliant-

rtj - thanks for bringing the viedos by.

Andrew has been a "fixture" over at SpeedHunters for a number of years. Has made a lot of development happen in Japan for a number of "time-trialers." Many of his "vectored" ideas have worked over into World Rally Competition, diffusers, flares, etc. I recall he also provided aero consulting to JDM for aftermarket wings, etc.

He has proven worthy of his last name.

Cheers - Jim

Pappy - thanks for the Sutton reminder. Its been a while since I've been by there.
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  #27  
Old 11-02-2018, 04:32 PM
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Here is something you may find interesting. Look carefully at the spoilers on these C-7s (blue is the low spoiler and the white car has the more aggressive, taller spoiler with end plates). The airflow on the blue car is more horizontal indicating less downforce, but also low drag. The upward flow of air off of the white car produces more downforce, but also more drag. These cars were at 180 mph or above at Mojave.

Pappy

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  #28  
Old 11-02-2018, 06:10 PM
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I guess if you pay the big $$ you get this:

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Not as good as the Ferrari vid ...

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  #29  
Old 11-02-2018, 06:11 PM
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Okay, more fender well evacuation/brake cooling techniques. On the Viper (and the new ZR1), there are ducts in the front fascia that route air to narrow vertical slits in front of the tires near the outer body skin (see photos). This air is aimed a little outside of the wheel and, in conjunction with the vortexes off of the dive planes, contributes to a low air pressure area outside of the wheel well that is supposed to draw air through the brakes. The front ducts also smooth the airflow around the nose of the car. Edit: Notice the vortex generator at the bottom, outboard end of the splitter.

Pappy

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Last edited by mfain; 11-02-2018 at 07:08 PM..
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  #30  
Old 11-02-2018, 06:54 PM
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While not a Corvette I've done a lot of Aero work under the hood of my little Triumph racecar. Principally focused on developing a delta across the rad but also to limit lift as much as my rules allow. I've used the Jaguar E-types as my example.

Point is, the corrugated plastic board as used in the political signs has proven light, strong and DIRT CHEAP. as a closure material. There will be a lot of it available soon LOL
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