Just found this article about splitters. Its a good one.
http://e30m3performance.com/installs...er/split_1.htm

 

My Maxima has every option as far as I can tell (not sure about the low-washer fluid light, but who needs that anyway???) so it would have come with TCS too if it was an automatic, but as I said, I'm almost positive that TCS was not available with manual transmission.

* * * * *

1/4" thick black Acrylic plastic or ABS plastic, interesting. And what an ingenious way to copy the outline of the front bumper. However, it looks like his splitter doesn't stick very far back under the car, if at all.

 

I'm pretty sure that OE TCS would cut ignition. The TCS is just a thought, I havn't put any serious R&D into it.

Anyone know about how much it will cost to ship Maxdady98's stillen lip? I might be abble to pay for shipping myself. I briefly spoke with my fabricator, but I need to get ahold of him again soon. I might not see him again till next week b'c I'll be crazy busy getting ready for a regional Battle of the Bands competition, but hopefully soon.

How many of you are interested? I'd like to get an idea how many we'll need to make, please indicate Stillen or OE. If it's at all possible, I'll make one size fits all. but I'll post some more R&D pics as I go. Please be patient with me, as this may take a while, and I'm insanely busy.

that E3 site is really good. that makes me wonder if I could find some plastic to make it out of. only problem is durability. I know nobody wants to pay lots to get a part that is going to break all the time. One thing about the alluminum is it weighs about 30lbs.

other R&D things to think about will be if we can get venturi's in the front splitter. I don't know how feasable this is b'c of front wheel drive.

Nate

 

Well, I'm certainly interested in a front splitter. I'm in no rush though, I have lots of other mods that take priority. I don't have a Stillen kit but I hopefully will by late summer or fall, so me, I won't be interested in purchasing a custom splitter for quite a while. Also, if Broaner successfully makes his own I might have him make me one too since he's local.

Definitely put some R&D into Venturis if you care to!

 

if you needed buyers to get into production, id be proud to put my name on the list for a stillen lip version. i dont have the lip yet, but im gonna get one soon, so i might aswell get a splitter that fits.

 

That is a really good article. It makes me question the actual effectiveness of our stock SE rear spoiler. I'm also starting to wonder if I can just fab my own splitter out of this plastic stuff like the article talks about. I know it is easily obtained at any Home Depot store. It's not that I'm against entrepreneurship, small business, capitalism, or anything, but money is pretty tight right now and if I can make my own for $40, I might do it.

Is this maxima splitter flat over the whole thing except for that little lip towards the back?

 

just a thought, but maybe you could change the turnbuckle mounting point to the lower radiator support, that way i could keep my fogs. i know its gonna be a pain fo ryou to find out if itll work, since you have an intercooler in the way... id volunteer to let you try the fitment on my car, but that would be a heck of a drive. but if you could look into that, that would be cool.

 

the stock SE spoiler isnt designed to do anything but look good, it is purely aesthetic.

 

Do you know that or is that just your assumption?

 

http://www.racelogic.co.uk/traction/

 

Very interesting site Ben. Thanks. I'm busily reading every article.

Tom, there is no question that I will be making my own. The question is how soon. I will not make it until I get the CF lip and that will probably be in late July or early August. I can make yours whenever you want.

Gustave's site makes me wonder if turnbuckles are needed. I think I will make mine without. Akumachan, putting the turnbuckles on the lower rad support would mean they have no leverage to do much of anything.

Spoilers on these cars were not intended to provide downforce. They are primarily asthetic. Nissan's ulterior motive on them was that they would increase gas mileage by smoothing the vortecies off the trunklid. It didn't work though.

 

well it was just a thought, cuz i dont wanna lose my fogs.

thanks for backing me on the spoiler, clearly no downforce on that thing.

 

yes.

that race logic site is awesome!

Nate

 

any idea of how this will look with stillen lip yet?

 

can u take some close up pics, maybe 1 or 2 of undernieth and 1 or2 of were the spilter meats the bumper.

For some reason i think im gona skip the stillen lip and just get one of these babys..

 

Still wating to get my hands on one.

More pictures on the way

Nate

 

more pictures

nate

 

damm i found my new spring project.
thanks man!!!

only thing im worried about now is the thing getting robbed, trying to think of a way to secure it better ....

 

Any theif that is going to take the time to unscrew/unbolts all those fasteners deserves it.

I don't but I will by August.

 

locktite on the bolt threads! haha.

 

sure, if you want it to be impossible to take off yourself. Thank goodness I don't live in a town where people do stuff like that.

I'll have an Idea how it will look sometime next week. I'll be getting a broken stillen lip from MaxDaddy98, It won't look completely right b'c its in pieces, but it'll look pretty close.

Nate

 

the more i look at that thing the more i need one... that thing looks so frickin sweet.

 

I'm thinking about it... I need to asses a price first. I think I would do a local deal first for the guys on NWMaxima.com for a test product, and then I'll move into a larger market... I need to do another test product, and then I might be ready.

wish me luck!

Nate[/QUOTE


dont think mannn!!! make them

 

Doing my best.

Nate

 

That looks pretty good, although a bit too aggressive for the stock bumper.

We've had diffusers developed for a long time, but haven't decided to sell them in large quantities. Ours is made of carbon fiber which significantly reduces weight over metal pieces, but is waaay too expensive to try to sell here. Just to throw in some ideas, here's the one for Top Element's green car, it's carbon fiber with black pigmented resin, except for the front which was kept clear:

 

I dunno if someone might have read this already or not, but here is a quote from the beamer guy.

"It is important to remember that splitters and wing extensions should really be added in matched pairs. Otherwise you risk upsetting the aerodynamic balance of the car. The worst case scenrio is a big front splitter with no rear wing mod. This will make the front end of the car grip better than the rear and leads to oversteer. So the car gets loose at high speed - not desireable."

I thought that made some sense, in other words this splitter idea would/create overstear and unstabalize the car in high speeds, wich is what we are trying to get here right? I dunno, i think its a kewl idea too...just thought id bring this up....

 

*** is going to produce a splitter either fiberglass or cf all the way back past the crossmember...they already made one for a differnt car, going to work on one for maximas...but u didnt hear that from me....

 

Yeah, when you said "diffuser", Larrio, I immediately thought a rear-mounted piece. I've never heard of a front diffuser. Front splitter, rear diffuser. Somebody needs to look into a rear underbody diffuser and/or rear spoiler modification to complement the front splitter!

Custom rear diffuser on an E30 M3 race car:





Interesting custom front splitter on the same car (note side channel thingies):





As far a rear spoiler mod, a Gurney flap like this would be cheapest and simplest but I don't love it aesthetically:





http://e30m3performance.com/installs...er/split_4.htm

More on the Gurney flap:
http://aerodyn.org/HighLift/gurney.html
http://www.allamericanracers.com/gurney_flap.html
http://www.insideracingtechnology.com/tech104gurney.htm

 

That piece looks fantastic Larrio. What would you sell it for?

 

larrio, you got any more pics of that?

 

I saw that too. I havn't noticed any lightness in the rear since I put the splitter on. mainly because what happens to the air up front effects the air in the back of the car too. if you're not allowing as much air to pressurize and go under the car as normal, then in effect, the front splitter is actually incresing downforce through the whole length of the car. Maybe I should take the splitter off for a while and see if the back of the car feels more stable.

those are awesome pics of a rear diffuser! I'm starting to get an itch to make some! If I had the splitter and the diffuser it'd be insane!

Larrio's diffuser looks real nice, props to you Larrio! I think he didn't call it a splitter because the lip doesn't stick out front far enough to function as a splitter.

Nate

 

Alright guys. When i first saw this thread, honeslty i thought the org was turning into a big rice bowl. then i started researching and it made some sense. Now i am kinda interested, but at the same time, this seems like an aesthetic thing more than anything. I meen i didnt really notice any unstability at high speeds while driving this week when i started thinking about it. then again i have linear springs, wich make a big difference.

But at the same time, aerodynamics dont really even take much effect on a car until u get to about 110-130mph right? I mean is this really useful for us? or is it just something that loooks cool?

i really cant see this doing much of anything for even aggressive drivers like me unless i were to go 130 everyday lol, this is why i ask for your opinions...

 

I know exactly what you mean by rice bowl. this splitter starts to make a Noticable difference at 45-50mph. I personally am not a huge fan of body kits and all, this was just a trial project that turned out to be awesome for handling at freeway speeds and the likes. the difference at 100mph+ is startling to say the least.

any more questions? I'll do my best to answer.

Nate

 

Nate let me know when your're ready for me to ship that lip to you

 

probably sometime tomorow money will magically appear in your account.

Nate

 

Cool, I'll look out for it

 

Ok im a total newbie with this all the info i know about this i just learned from this thread. But about a week ago i was watching this show and they had the Saleen S7 on there. Well what the guy had said about this car was that it produces its own weight in downforce so it could acctually in theory drive upside down. But i would suggest looking at some pics of the underbody of that car just to see whats its all about. It looked interesting with all the cuts and slots for the air flow.

 

Thanks, but you can give props to Top Element since he's the one that designs and builds them. For my car he designed it to fit the AE kit, and it barely clears.
In order to function as intended, it should be mounted on a body kit in order to make it flat with a slight upward slope in the rear. If it's mounted on the underside of the stock bumper, there are other things that hang lower than that in the engine bay. Also, make sure to use cross bracing to stiffen it, and use several brackets to support it. You can see the raised area on the pic I posted, where he machined blocks of urethane honeycomb and put it between the CF layers to add to the stiffness of the part. It is technically a splitter in the front, but we didn't want it sticking out too far to avoid very costly damage.

Where did you get that idea? The aerodynamic forces can be felt at about 50-60mph. The one in the image I posted is not for looks, just performance. It significantly enhances the vehicles high speed stability and steering feel.
Stick your hand out of the window horizontally at 60mph and you can feel the air pressure if you tilt your hand up or down even slightly. And that's a rough surface with an area of only about 25 sq. inches. Now imagine a smooth panel with over 2,000 sq. inches!

 

Larrio, where do you guys post your pics? I'd like to browse through them.

 

Yet another reason the G35 is an amazing vehicle:

From http://www.carguidemagazine.com/arch...s/infiniti.php

There’s more at play under the skin – and underneath the body, out of sight – than meets the eye. G35 breaks new ground as the first mass-production car to use wings, or fairings, under the body to enhance aerodynamic efficiency. It cuts the air cleanly and quietly, creating less mileage-robbing drag than virtually every known production vehicle built to date. An optional exterior aero package with rear deck wing creates zero lift at both the front and back ends of the car, at all speeds. Zero lift at the front is a standard feature of all G35s.

Lift is an unwanted result of inefficient body design. It causes a car to feel lighter, or floaty, as speeds rise, reducing its dynamic stability. Pardon the popular vernacular, but lift is a drag. The chassis features a “front-midship” design, with the engine placed lengthwise behind the centre point of the front wheels, which are pushed ahead to the front corners. In the event of a front-end collision, it is designed to drive the engine underneath the car instead of into the cabin, to further enhance occupant safety.

The engine is covered beneath to smooth undercar airflow, the centre muffler is contoured to further assist airflow before moving across the floor-side fairings and deflectors, and exits through a rear diffuser.

A diffuser makes use of the “venturi” principle. When air flows through a closed channel with an expanding cross-section, its pressure drops as the flow moves to the rear, thus creating downforce. Extensive wind tunnel testing was employed in the design of the platform and underbody, and the shape of the upper body evolved from that, said Ian Forsyth, director of product planning for Infiniti Canada. The underbody aerodynamics were also designed to extract heat from the engine and the brakes, Forsyth added.

4th gen Maxima Cd = 0.32
G35 Cd = 0.26 and it's a much bigger car