[Godzila]

Is there any purpose on this car besides look?

I mean I know the previous model all came with Big Wing...and it had a purpose at top speeds...

In this generation does the MR have carbon fiber big wing?

 

[DaemonSadi]

Not carbon fiber.

I do believe the aerodynamics are wind-tunnel tested and high speed through a twisty enough course, it has a purpose.

 

[UnctrldRage]

Yes both wings are functional and both I believe are offered with a spoiler lip extension that has been test as well.

 

[Godzila]

so is big wing better than small wing?

 

[UnctrldRage]

On the street level I would think you'd get a better use out of the smaller wing as it won't require the same amount of entry speed/straight line speed to be effective.

 

[TarmacAttack]

it says "hey dude, I'm not a lancer"

 

[dkevox]

^^LOL... so true.

Personally I'm glad its not carbon fiber, I don't like the way the carbon fiber wings look.

Second, you can think of the "wing" as just that. It works under the same principal as airplain wings except for one key difference, the spoiler is designed airodynamically to be pushed down and "hold" the car on the ground as opposed to pushing up.

Technically, if there is any air flowing over the spoiler then it is applying a downforce, however this downforce really will make no percievable difference untill you get to high speeds.

I love the large spoiler look, but it all honestly it serves basically no purpose for daily driving. On the highway, at 80mph, the car feels so in controll and "attached" to the road, which I would have to contribute at least somewhat to the spoiler. However, an important thing to consider is that the wing basically uses drag to create a downforce, so it is horribly inneficient for gas mileage. but if you bought the evo because it's economical then you are high on something.

 

[Robotix Junior]

I don't like having a spoiler in my area. In my neck of the woods, a spoiler seems to be a hidden message to use it as a bench when i'm parked, and hold onto it when i drive off :'(

How can i stop these little kids playing with my spoiler?

 

[dcasandman]

Spoilers really has no use under 100mph from what Ive read in the past. Maybe being as big as it is it may help, but unless you are a the track or drag strip really provides nothing. It is mostly for EVO look Im sure. I personally would like to just have a small lip spoiler, but Im sure ill get flamed for that cause its an anti-evo look.

 

[Unowned]

If you noticed the rear spoiler in the middle is raised up... well where else do you see this pattern? F1, Yes, JGTC, Yes.... It's advanced airfoil technology that is purpose designed and wind tunnel tested and Mapped....

 

[Robotix Junior]

Thanks for the diagram Unowned. But will the X be any slower if i replace it with a Lip Spoiler as dcasandman suggested?

I know the spoiler keeps with the Evo look, but it also gives temptation to little kids!

Unfortunatley Streamlines aren't my speciality

 

[Unowned]

The funny thing is within aerodynamics you can tune to endless possibilities.

For example by putting on a front spoiler and rear spoiler you could actually accelerate quicker! Reason is because you've gotten rid of turbulence and vortexes generated in the body flow, the draw back would be reduced top speed due to increased downforce typically generated when you reduce turbulence (but downforce helps you corner better at higher speeds)...

To summarize:
Aero parts may increase acceleration, cornering and braking potential (I cannot say how much as it's diff per application), at a Cost of Top Speed.

Or the opposite can be applied

Aero parts may decrease acceleration, cornering and braking potential, but increasing top speed (meaning getting rid of spoilers or lowing the amount of "attack" on them etc.) Again application effects this.
​

 

[Robotix Junior]

Ok thanks mate, i think i get what your talking about. I know it seems stupid, but i have never worried about aerodynamics!

Seems like an interesting area to study in tho! I used to just work on the principle that a powerful motor will just push all the air out of its way anyways.

So are spoilers good or not?

 

[Unowned]

To summarize:
Aero parts may increase acceleration, cornering and braking potential, at a Cost of Top Speed.

​

This is why Evos come with large spoilers. So if you remove the spoiler you will do the opposite... the choice is yours

 

[Robotix Junior]

Ok thanks mate, i'll leave it on then

 

[AKYap]

A lot of people in the motor world focus on the downforce and high seepd applications of the wing. Although this is true and does offer advantages, we should not discount the lower speed applications of the wing that maintain boundary layer effects and preserve kutta condition flow behind the car. This is quite important in keeping the coefficent of drag lower. Lip spoilers only add to this fact, providing an extra helping hand in creating the right Kutta condition and rear momentum vortex.

As someone pointed out in the picture, the middle area of the wing is raised. This is the attempt to allow for a dual speed mode of the wing, offering variable pitch on a fixed wing application. Ive noticed this raised section also effects the streamline flow across the rear window, leaving a distinct pattern after a good drive in the rain. Everytime this happens i think about taking a few measurements and doing some calcuations to try and predict the boundary layer sepration point. This would come in handy if folks wanted to add VGs to the back.

In aerodynamics, everything fixed must be optimized to a single speed. I do not know the speed in which mitsu engineers tweak everything to, but that speed in fact dictates the height and angle of attack of the wing, as well as the height of the vortex generators (in the case of the IX) and possibly the front mount components such as the radiator and intercooler (if they really got that far into it for a street car).

 

[Robotix Junior]

thanks for the details AKYap, so now i get the point of spoilers lol. Do you know if there are any kits for an adjustable spoiler on the X yet?

 

[verkion]

A lot of people in the motor world focus on the downforce and high seepd applications of the wing. Although this is true and does offer advantages, we should not discount the lower speed applications of the wing that maintain boundary layer effects and preserve kutta condition flow behind the car. This is quite important in keeping the coefficent of drag lower. Lip spoilers only add to this fact, providing an extra helping hand in creating the right Kutta condition and rear momentum vortex.

As someone pointed out in the picture, the middle area of the wing is raised. This is the attempt to allow for a dual speed mode of the wing, offering variable pitch on a fixed wing application. Ive noticed this raised section also effects the streamline flow across the rear window, leaving a distinct pattern after a good drive in the rain. Everytime this happens i think about taking a few measurements and doing some calcuations to try and predict the boundary layer sepration point. This would come in handy if folks wanted to add VGs to the back.

In aerodynamics, everything fixed must be optimized to a single speed. I do not know the speed in which mitsu engineers tweak everything to, but that speed in fact dictates the height and angle of attack of the wing, as well as the height of the vortex generators (in the case of the IX) and possibly the front mount components such as the radiator and intercooler (if they really got that far into it for a street car).

:thumbup::thumbup::thumbup:

I am such a nerd/geek...ah well, comes with being an engineer I guess. LOL! Thanks for the good info AKYap! I'm guessing it would be possible to calculate the velocity the Mitsu engineers tweaked everything to...assuming that is, different parts on the cars actually were tuned for a particular velocity, i.e. some parts were not added for pure "looks" as you mentioned above.

Quick question, what do you mean by the "distinct" pattern of rain? Do you mean at the "seperation point" from the rear of the car? Or do you mean it the rain droplets on the rear windshield itself? (I'm guessing you mean the droplets on the windshield from the pic someone else attached of the IX MR on the first page...but doesn't hurt to check. I'm no expert.) And if this is the case, someone care to get a good picture of this?

verkion

 

[verkion]

Oh, one last question...spoiler and wing. Are the terms actually interchangable? Or do they mean different things (to an engineer that is). I remember a whole bunch of peeps becoming quite offended at other calling the Evo's uh, "thing that sits on the trunk" a spoiler instead of a wing.

The "definition" I've come across, (by non-technical folk), is that spoilers are designed to interrupt airflow/preserve (and correct me if I'm using the wrong term here) laminar airflow. Wings are actually designed to generate lift (+ve or -ve direction). If this is the case, then is the "thing" on the Evo X actually a hybrid of the 2? Wing in center section to generate (-ve) lift, a.k.a. downforce, with the two sides being "spoilers" to preserve the laminar flow and insure clean seperation from the rear of the car? Or am I just thinking too much...I think I'll stop now...it hurts...:-D

verkion

 

[UnctrldRage]

A spoiler would be more interchangable with lip. If I remember correctly Auto-wings are true wings just installed upside down (Look at an F1 wing and then turn it upside down. It should have the same curvature of an airplanes wing)

I know thats not exactly how it is if someone can elaborate more I just put it in a rough context