RX8Lover

Um, ok?

I never said I was trying to make performance mods. But if you think you gave me a taste of my own medicine, what ever that means, good for you.

RX8Lover

also, if you are looking for stabilty of your RX8 when you are going that fast, perhaps you should have a mechanic take a look at your wheels and alignment. Because no one else feels threatened by lack of downforce when going that fast.

I guess I'll have to take my chances with my overheating calipers. whew!

darkducati

Nevermind. It clearly sailed right over your head.

mikeb

are you no longer a newbie moderator??

RX8Lover

HEHE - thanks, mike

David_M

THe NT-5 wing looks to high to me, but that is just my opinion. A lower wing would likely provide as much downforce with less drag because it wouldn't contribute to increased frontal area as much.

For any wing to be functional it has to be in "clean" airflow. Clean meaning not turbulant. Since the RX-8 has a shallow sloping rear window as soon as your'e a few inches off the trunk and out of boundary layer air your'e in clean airflow. A higher wing ( at or above the roofline ) could be used if you needed a lot of downforce since the airflow will not be occluded by the cabin. Unfortunetly a higher wing will also increase drag by a signifigant amount.

The NT-5 looks like a copy of a JGTC wing so it probably will add downforce, but so will a peice of plywood angled into the wind. Since it is only a copy ( albeit of a functional race wing ) and as far as I know ED doesn't test for aerodynamics, it probably won't have much better downforce vs. drag than the aforementioned peice of angled plywood on similar stanchions. I should also add that some wings ( even OEM ) actually add lift at high speed.

If you want a wing that is truly functional your choices are limited. The RX-8 OE wing and Mazdaspeed wing are both claimed to add stability ( which is somewhat different than adding downforce ) at high speed. I know of only two aftermarket companies that test for aerodynamics, Mugen and APR. Mugen tests at Hondas' facility. I don't know where APR conducts their testing but they test at 1/4 scale.

darkducati

Maybe this would be a better option. Flame away.

JERCS

that one looks a little bit better then the last one. IMO the car looks the best w/o any, even the mazda one.

RX8Lover

yep, looks like ****.

RX8_ASR

well, i'd like to thank ashmason and that david guy...for not being complete and total JACKASSES. i asked for an opinion, not a your idea sucks, go home and cook some rice. so thank you two. hope everybody has a lovely day. : )

David_M

Darkducati, I have that exact wing on my car with the endcaps painted blue to tie in the wing with the body. Looks better in real life.

Kas

i've seen the same things going around supermarkets. oh thats right its called a shopping trolley!

darkducati

PUR NRG

Funny, I thought "your idea sucks" is an opinion. Probably not what you wanted to hear but you're not good at giving answers either. When I mentioned your question about "will it hold the rear end on the ground well enough" was too vague, your clarification was "i want something that will work if i'm havin at it".
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Kmart Gift Cards

mysql101

PUR, depends on what is being discussed.

Someone's idea might actually suck - and there could be evidence to prove it sucking, thus a fact rather than an opinion

RX8_ASR

well here...i will clarify...if i am trying to just go as fast as i can...in a STRAIGHT LINE FORWARD...will it work?

Lufa

Second wing is not nearly as ricey as the first... Still, no way I would put one of those on my car.

David_M

No. The RX-8 is stable in a straight line up to about 120 MPH, or so I've heard. I've personaly have had the car up to 105 MPH and it seemed very stable. If you want to lose drag the easiest way would be to lower your car. The less air that gets underneath the lower the drag. A front air dam will also help in this regard, as will simlpe ( plain with no protrusions ) side skirts that extend as low as reasonably possible. Lowering the car alone should keep it stable at any speed your likely to reach with a stock or near stock RX-8.

If your absolutely set on installing a wing choose one that is low and extends past the trunk. such a wing will lower the air pressure behind your car to a greater degree than normal. Thus the air that flows around, over and under your car will be pulled into this low pressure area. A small spoiler ( I'd guess about 20mm to 30mm high ) might also be worth considering.

The large wings on track and drift cars are there to keep the rear planted longer in a turn, so the cars can brake later and carry more speed through a turn. Race cars have much higher drag than street cars. This is because negotiating turn faster is more benificial than attaining higher straight line speed in their situation.

I should also state that I placed a wing on my car because I like the race car look. I chose the APR wing because at least they bother to aero test so the extra drag that comes with the extra downforce is minimized.

Will a wing provide more downforce? If it's well designed, yes. I don't think the NT-5 wing meets your stated needs. No wing at all along with lowering your car will give you the most benefit in my opinion.

wakeech

a wing will not help you go quicker in a straight line ever. as for pretty much every wing posted in this thread, functionless POS that's made of carbon fibre for style. end plates on all but the Amemiya wing are too small. your first wing is way the hell too tall, and would kill you for drag on top of having a really bad aspect ratio (means it's inefficient).

anyways if quick is what you want, get the OEM "Euro spoiler", which will actually do what you're looking for (reduce lift over the back end of the car, help a little with drag too).

1_dollar_83_rx7

How much force do you think a wing will actually put on your car?

Or maybe should I say what are you hoping for? 200 lbs?

Why don't you install one of those wings and then sit on it if you really think the wing can even support 200lbs.

You can't get 200 lbs of downforce if the wing can't even support it.

If your wing can support a good amount of force it is going to bust a hole through your trunk.

Good luck

-Nick

RX8_ASR

thank you folks...i've read all of the posted messages in this thread, learned a lot, and appreciate everyone's help.

David_M

Your forgeting the lever action of the wing. The downforce a wing makes acts on the suspension. The further away from the suspension the less force on the wing you need to get the same amount of force acting on the suspension. Look at the wing on the Daytona Charger from the 60s'. The horizontal surface is nearly flat, set at a very low angle and about 6" deep with no endcap to contain air atop the wing. However that small surface is also about 8' away from the suspension. So the actual force on the wing is greatly increased by the time it reaches the wheels.

The Daytona wing is an excellent example of a low drag, high downforce wing ( if a little implractical for a street car ). Same reason for the height of the Supra wing, another small surface wing. The reason no one uses wings that high anymore is because of wing height restrictions imposed by racings various sanctioning bodies.

David_M

I've no arguement with most of what you posted. However, small endplates are usually used to control wingtip vortices, thus reducing drag on a given wing. Larger endplates are used as inverted winglets, wich aside from controlling vortices acts to aerodynamically make the wing act as if it were longer.

1_dollar_83_rx7

Good point David M, thanks for correcting me