Its for heat evacuation. Heat's shoved in the front, through your awesome ducting, through your awesome radiator, then it sits in the engine bay, eventually finding it's way past the engine, below the firewall, and out past the transmission and exhaust somewhere.
The extraction vents are hopefully placed in a lower pressure zone of the hood, meaning the aero over the vents "suck" the heat out directly after it's past through the radiator. That's a layman's explanation anyways, bottom line is it works. |
Originally Posted by curly
(Post 881993)
Its for heat evacuation. Heat's shoved in the front, through your awesome ducting, through your awesome radiator, then it sits in the engine bay, eventually finding it's way past the engine, below the firewall, and out past the transmission and exhaust somewhere.
The extraction vents are hopefully placed in a lower pressure zone of the hood, meaning the aero over the vents "suck" the heat out directly after it's past through the radiator. That's a layman's explanation anyways, bottom line is it works. (The extraction vents are hopefully placed in a lower pressure zone of the hood) when i first saw them thats what I thought there's no way to know if where they are located will help heat/ air expulsion, there is, was a guy on here that put on, what to me looked like the most useful vents ive ever seen https://www.miataturbo.net/attachmen...ine=1328449248 |
4 Attachment(s)
Just for kicks, the homemade aero of a frieds. It's "a bit understeered" at the moment :)
https://www.miataturbo.net/attachmen...1&d=1338021553 https://www.miataturbo.net/attachmen...1&d=1338021553 |
What's the point of putting the wing so far back? I understand the whole clean air thing, but wouldn't placing the wing that far back cause the rear wheels to act like a fulcrum and lighten the front?
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Originally Posted by 573
(Post 882098)
What's the point of putting the wing so far back? I understand the whole clean air thing, but wouldn't placing the wing that far back cause the rear wheels to act like a fulcrum and lighten the front?
TBH I'm surprised the whatever sanctioning body he's under allows it to be so far back. Most require a wing not extend rearward past the body. |
He did say it was a bit 'understeered'. If you level the wing out, you could probably get the proper downforce with less drag than a wing mounted over the wheels with a stronger AOT. Does that pass the physics 101 sniff test?
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Originally Posted by 573
(Post 882098)
What's the point of putting the wing so far back? I understand the whole clean air thing, but wouldn't placing the wing that far back cause the rear wheels to act like a fulcrum and lighten the front?
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Originally Posted by rccote
(Post 882177)
what's being done about exhaust, diff, and trans heat?
But it has not been run for that long, so we'll see what brakes first. |
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Has anyone ever quantified all this extra aero with lap times, seat of the pants feel..eg: I can now take so and so corner with 300 more revs/ a higher gear, I can brake 30 m later than I used to previously..... etc...
All this aero fascinates and tempts me but it's hard to know to go to the extra effort, cost and drama if it is only for minimal gains.... |
Also the wing will provide more leverage that far back. Force x distance = more momentum around the point. Meaning it will "twist" the car more therefore providing more force against the rear tires.
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Having a wing that far back is more effective - meaning you can use a smaller less downforce/drag wing.
I plan on mounting mine far back too. |
What do you do about the ~50% of upforce at the front tires that you get as a result of the rear mount? Is front downforce available at such low l/d ratios that you don't have to care about adding another 50%?
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Originally Posted by mx5-kiwi
(Post 882310)
Has anyone ever quantified all this extra aero with lap times, seat of the pants feel..eg: I can now take so and so corner with 300 more revs/ a higher gear, I can brake 30 m later than I used to previously..... etc...
All this aero fascinates and tempts me but it's hard to know to go to the extra effort, cost and drama if it is only for minimal gains.... No aero: Car is balanced Just a splitter: over 50mph the car oversteers like crazy Splitter and wing: car is balanced again |
Originally Posted by mr_hyde
(Post 882167)
He did say it was a bit 'understeered'.
Aero opens a new dimension of options, and possibilities to screw up :) |
Dual element wings like the one on that car are for high downforce, and should be used on low speed tracks. He could try removing the second element/top wing part. I think aero is something you have to balance out. So get as much on the front, then adjust the rear to suit.
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2 Attachment(s)
The only aero mod I have done is purchase my hard top a few months back. My inspiration come from this. I so want to build those sail panels for my hard top. Also the electric fans pulling air from under the car, and the hood, and, and, and, ---- it I really just want that car.
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Originally Posted by lightyear
(Post 882427)
Dual element wings like the one on that car are for high downforce, and should be used on low speed tracks. He could try removing the second element/top wing part. I think aero is something you have to balance out. So get as much on the front, then adjust the rear to suit.
Lowering made the front work much better so the initial wing setup made it balanced (cut 2 secs on a one minute track right away). |
Originally Posted by DOHCPanther
(Post 882506)
The only aero mod I have done is purchase my hard top a few months back. My inspiration come from this. I so want to build those sail panels for my hard top. Also the electric fans pulling air from under the car, and the hood, and, and, and, ---- it I really just want that car.
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