The DOWNFORCE Thread!

[Imarvin240]

So I have been looking around on here trying to find proper info on wing angle, wing stand types, front splitters, diffusers, canard info, and other downforce aero related info...but didn't find much, if anything. I figured we should have a thread to post up questions/info/photos on our wing, splitter, canard, diffuser setups. I think this will help some of the future aspiring track guys on here.

Rules: Only post info, pictures, questions regarding downforce aero.



Here's mine to get it started.

It's a 70" Kognition Designs carbon fiber chassis mounted quick disconnect wing.

http://i1369.photobucket.com/albums/ag224/Imarvin240/274_zps1e998ae0.jpg (http://s1369.photobucket.com/user/Imarvin240/media/274_zps1e998ae0.jpg.html)
http://i1369.photobucket.com/albums/ag224/Imarvin240/254_zps403c0f0a.jpg (http://s1369.photobucket.com/user/Imarvin240/media/254_zps403c0f0a.jpg.html)
http://i1369.photobucket.com/albums/ag224/Imarvin240/178_zps1fe51719.jpg (http://s1369.photobucket.com/user/Imarvin240/media/178_zps1fe51719.jpg.html)

It's an extremely well made product and it's a well proven product on the track. The quick disconnect is just a few pins on each side that get pulled out to remove the wing, which then allows the hatch to open easily. The whole kit is super easy and simple to put together. The only tough part would be cutting the hatch in the correct spot lol. Touge Factory will be doing a full carbon fiber underbody diffuser, front splitter, and canards on the car, which I will post up later.


Looking forward to seeing some of the other setups on here and hopefully learning a few things as well.

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2014/07/img_1484-edit.jpg
https://naritadogfight.files.wordpress.com/2014/07/img_1528-edit.jpg

[Bushido]

http://www.worldtimeattack.com/wp-content/uploads/2012/03/article_mca5.jpg

http://www.worldtimeattack.com/wp-content/uploads/2011/09/MCA88-567x318.jpg

LOL

[Bushido]

http://www.miataturbo.net/attachments/race-prep-75/89893-blackbird-fabworx-moby-dick-mca%2520suspensions%2520s13%2520027-jpg?dateline=1380128429

http://www.circuitthreads.com/wp-content/uploads/2014/10/WTAC_TRP_R32.jpg


http://www.circuitthreads.com/wp-content/uploads/2014/10/WTAC_Under_Suzuki_Side_ZE40.jpg

http://www.circuitthreads.com/wp-content/uploads/2014/10/WTAC_Under_Suzuki.jpg

[future]

That s15 8========D


as the rules say I need a question. So at what point is there too much Down force and just a bunch of drag?

[ehhhregartless]

I would think your times would get slower at peak downforce/drag limit. Then add power and adjust

[Sileighty_85]

So is this for the common track car, street car, or competition shop track car that 90% of us will never be at that level or have that much money to dump into aero to where this is just another wet dream pic thread?

[ehhhregartless]

I'm not sure what Marvin's personal goals are but I'd say all of the above. Plenty of people, including myself, are inspired but functional aspects. As long as its applied correctly, trickling down tech from the pros is what we all do in one form or another. Ultimately this isn't nissan road racing or nasa forum so if might not get that technical but looking at cool pics never hurts

https://naritadogfight.files.wordpress.com/2014/12/ndf_9512-edit.jpg
https://naritadogfight.files.wordpress.com/2014/12/ndf_9413-edit.jpg
https://naritadogfight.files.wordpress.com/2014/12/ndf_9517-edit.jpg

[Bushido]

http://www.speedhunters.com/wp-content/uploads/2013/02/Under-Suzuki-S15-02.jpg



http://www.speedhunters.com/wp-content/uploads/2013/02/Under-Suzuki-S15-04.jpg

http://www.worldtimeattack.com/wp-content/uploads/2014/03/article_suzuki11.jpg

http://www.worldtimeattack.com/wp-content/uploads/2014/03/article_suzuki14.jpg



http://www.worldtimeattack.com/wp-content/uploads/2014/06/SuttonTest020.jpg

http://www.worldtimeattack.com/wp-content/uploads/2014/06/SuttonTest09.jpg

http://www.worldtimeattack.com/wp-content/uploads/2014/06/article_sutton.jpg

[ehhhregartless]

http://jonsibal.com/2012/BE2012_16.jpg
http://jonsibal.com/2012/BE2012_18.jpg
http://jonsibal.com/2012/BE2012_19.jpg

[tacotacotaco]

Small tips you guys can use to be more efficient.

1 front undertray even oem will help reduce air pressure in your engine bay. Creating down force on your hood. The lower the air pressure in your engine bay more down force.

2. Closing up any vents on your front end that are not necessary or ducting them so that they don't release into engine bay.

Using strakes or dams to cover leading edge of tires.

Not using any hood with vents into engine bay. All vents should be pulling air from engine bay.

All very basic easy to do tips just for making car more efficient

[Z_Spool]

http://www.worldtimeattack.com/wp-content/uploads/2014/03/article_suzuki11.jpg

I feel like this thread would be better suited to the technical discussion board, or else this is just doomed to be another pretty picture thread. That being said, hopefully we have some more engineering-minded members that can shed some insight into the aerodynamic properties to be discussed here. I do have a question for any with experience. I see fenders being modified like this more and more with basic cutting like on this S15 above and Yuta's Civic below as well as more hand crafted designs like the front wheel arches of the Bensopra GT-R. What exactly is the purpose of removing that portion of the body from the trailing edge of the tires?

http://www.speedhunters.com/wp-content/uploads/2014/12/Super-Lap-Battle-14-131-copy-800x533.jpg

[greddy2die]

I would assume to allow the air to disburse quicker & have less turbulent air getting caught in the fender behind the wheel / door area. However, that's just a guess! ha

[Def]

To make front downforce with a production car, you are trying to get as much air to flow under the splitter as possible.

The rear diffuser helps this by helping "pump" the air from the front to the rear. Same with small diffusers in front of the front wheels.

The venting of the rear of the front fender is trying to act somewhat like a rear diffuser - pumping more air out, which increases the mass flow of the air under the splitter, which drops its static pressure (Bernoulli's equation).

[xpinoyxmk]

Imarvin240, does that wing setup allow you to adjust to different positions, like the Scorch Racing S15?

Also, thought that red 180sx what built for show?

[Sleepy_Steve]

+1 you probably want to move this to the tech section.


The cowl area of the hood is a high pressure area, that turns it into an intake, and is why your vents flow some air at speed even with the climate control fan off.

The higher the flow over that part of the car, the better that place is for a vent as the lower pressure will make the vent move more air. Uras hood vent's normally look to be located reasonably well to evacuate air (and pressure) from the engine bay.

As Def (and someone else) said, even a front under-tray that doesn't go past the bumper will help smooth the airflow under the car and either improve down-force and / or eliminate lift.

Gurney flaps on the back of aero elements help kick the air up into the stream a bit more and allow a greater angle of attack for that element.

Dive canards are relatively inefficient on their own and are normally used to channel a vortex of air away from some drag heavy part of the car (ie; wheel wells)

The wheel wells are areas of high pressure, it's best to evacuate that high pressure outside the car rather than under it. See all the TT / time attack guys hacking the lower third of their fenders behind the front wheels, or spacing out the bottom of your fender about an inch and rolling the back lip flush like you do on the wheel arch.

When you have to vent air, top is best, then out the sides is ok, and lastly the bottom is the worst place to do it, you want nice fast smooth flow down there.

Diffusers work by making the air stream slow down and expand. You must do this gradually to avoid flow separation (stall) over the element. Because that takes space to do the expansion gradually, the sooner you can start that expansion the better. Because they work better w/ smooth flow, best results are found with a flat bottom and splitter or front under-tray already being used.

You want a good front to rear balance of down-force just like you would mechanical grip. You can use one to band-aid the other but that changes the balance based on speed and makes the car difficult to drive.

Down-force generates drag. If you have too much drag at the front, it can make the car unstable in a straight line.

Sealing up gaps between an air dam and a splitter can make large improvements.

Your rear wing's angle of attack is found by drawing a straight line from the leading edge to the trailing edge and measuring the resulting angle.


That's all I know on the topic. I was a business major in school. I just read a bunch of race car books / magazines.
All of that crap I just typed up assumed that the car is moving forward through the air at a not full-lock slip angle.

[ehhhregartless]

^Looks like we're off to a good start.



Also, thought that red 180sx what built for show? "The highly modified SR20, built by Toshitake, puts out an adequate 593 horsepower; more than enough to get him sideways on track. Actually, that’s pretty much more than enough for anything you’d want to do with the car. Seki chooses to drift ~"

https://naritadogfight.files.wordpress.com/2014/12/ndf_9417-edit.jpg

[Wheel Lounge]

http://www.circuitthreads.com/wp-content/uploads/2014/10/WTAC_TRP_R32.jpg



Ready for take-off..

[crzsteveo]

I also hope I can absorb some info on aerodynamics from this thread. I would like to improve the aerodynamics of my car and track it soon.

http://www.worldtimeattack.com/index.php/introduction-to-race-car-aerodynamics/

http://www.speedhunters.com/wp-content/uploads/2011/08/IMG_0035_evcJ_11.jpg

[Sleepy_Steve]

I also hope I can absorb some info on aerodynamics from this thread. I would like to improve the aerodynamics of my car and track it soon.

http://www.worldtimeattack.com/index.php/introduction-to-race-car-aerodynamics/

http://www.speedhunters.com/wp-content/uploads/2011/08/IMG_0035_evcJ_11.jpg

Dude, just come hang out one weekend when I'm wrenching on my car. I'll learn you some aero shit. Maybe even lend you a book on it.

Opener at VIR is on March 20th's weekend, lots of race cars to look at if you want to swing by.

[shmoo]

happy festivus, because race car.

http://i144.photobucket.com/albums/r171/shmooly/texas%202014%20and%20TDY/DSC_9287.jpg

http://i144.photobucket.com/albums/r171/shmooly/my%20d%20Eighty/fedex3wheelin.png

_because race car.

y, i know she's not a two four tay, but, come on, i wet sand one.

but, y'all are getting down for real. are all of these diffusers/ splitters/ canards custom? how about these spoilers?.. i'm considering a big country labs one, or an apr gtc 500 one. i've researched some voltex and a couple others, but i'm just not sure. where are y'all working from?

turkey

[zeitgeist]

What do those pictures have to do with this thread..............

[turbo2nr]

happy festivus, because race car.

_because race car.

Y, i know she's not a two four tay, but, come on, i wet sand one.

But, y'all are getting down for real. Are all of these diffusers/ splitters/ canards custom? How about these spoilers?.. I'm considering a big country labs one, or an apr gtc 500 one. I've researched some voltex and a couple others, but i'm just not sure. Where are y'all working from?

Turkey

kill yourself.

[LockOn!]

happy festivus, because race car.


turkey

https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcSCVV6ZgIqIOsdQUPpyzHB1O7jQmrc0A imeVprCDNoL1U9alpRH

Troll? I really hope troll.


on topic:

http://ra64freddy.files.wordpress.com/2013/08/s14.jpg?w=560
http://ra64freddy.files.wordpress.com/2013/08/s140.jpg?w=560

[1Badhatch]

I'm not sure what Marvin's personal goals are but I'd say all of the above. Plenty of people, including myself, are inspired but functional aspects. As long as its applied correctly, trickling down tech from the pros is what we all do in one form or another. Ultimately this isn't nissan road racing or nasa forum so if might not get that technical but looking at cool pics never hurts

https://naritadogfight.files.wordpress.com/2014/12/ndf_9512-edit.jpg
https://naritadogfight.files.wordpress.com/2014/12/ndf_9413-edit.jpg
https://naritadogfight.files.wordpress.com/2014/12/ndf_9517-edit.jpg
What is the name of this kit or specifically the front canards and bumper

[DJDANGER24]

^^ Garage Mak

[turbo2nr]

Garage mak makes the aero, IIRC that is seki motorsports s13

http://thenaritadogfight.com/2014/12/19/encounter-super-speed-seki-motor-sports-s13/

[shmoo]

how's it going y'all sorry to barge in here again.. i did so a couple years ago.

it's kinda weird, the 3s guys don't/ aren't really taking to the downforce thing, however y'all are. they all just kind of go big ass turbos, and no real phun.

we're in the process of putting together a two forty, just whatever

^^y thanks for the info.

_isiah

[crzsteveo]

Dude, just come hang out one weekend when I'm wrenching on my car. I'll learn you some aero shit. Maybe even lend you a book on it.

Opener at VIR is on March 20th's weekend, lots of race cars to look at if you want to swing by.

ill have to take you on that offer. Ive been doing a lot of reading on front splitters with positive and negative pressures and how it affects lift and down force on the front of the car. Very interesting stuff for sure.

[shmoo]

ill have to take you on that offer. Ive been doing a lot of reading on front splitters with positive and negative pressures and how it affects lift and down force on the front of the car. Very interesting stuff for sure.

would you mind posting up some information on that? or, some links to this negative/positive downforce?.

I've rocked the front splitter for a a while, I'm a little on the fence about the big wing thing though. I'm not sure if it's because I believe or because I want to believe.

_isiah

[zeitgeist]

Curious about effective angles for diffusers/canards/spoilers. Looks like everyone just puts stuff on without thinking about this

[Sleepy_Steve]

Ya'll need to go to an ALMS (now Tudor) race and just snap ungodly amounts of pics of the prototyles and their dive planes / diffusers / splitters / belly pans if you can see them..... Just figure they've scienced most of this out, so its a good pool to pull ideas from and learn from.

[Otto347]

Lol I've been doing stuff like that for years. Photograph suspension and all kinds of things to get ideas. They have money to burn for r&d on that stuff.

[crzsteveo]

Curious about effective angles for diffusers/canards/spoilers. Looks like everyone just puts stuff on without thinking about this

they have definitely put some effort into scientifically testing all aspects of it.

There are ssssooo much articles and websites online explaining about the size, angles etc and how much it affects air pressure around the vehicle. ive been researching more along the lines of time attack cars to see if I can tie those designs into a road car, for like high way speeds.

Its sucks because its all a balancing act. you lower your car and increase the angle of your front splitter towards the ground more, by doing so you increase down force creating more grip but increase the drag and change the air pressure around your vehicle.

what I want to accomplish with my car is creating that balance of air moving around my vehicle and kill that turbulent air that sits behind my hatch.

if you have a smokey car you can see this just by driving. the smoke curls and spins around the taillights and continues to do so without going anywhere.

I think that's because the low pressure going under my car and the high pressure going over my car and around, are moving at different speeds or created turbulence somewhere else along my car causing a whole mumbo jumbo type shit.?????

[Z_Spool]

...causing a whole mumbo jumbo type shit.?????

Yup... that's pretty much the long and short of it. :keke:

[ehhhregartless]

RE style diffuser with some strakes might get you in the right direction

https://naritadogfight.files.wordpress.com/2014/11/ndf_9987-edit1.jpg

[Bushido]

http://i48.tinypic.com/bjhes0.jpg

[crzsteveo]

Bushido thank you!!!

[Def]

http://i48.tinypic.com/bjhes0.jpg

The guys on ecomodder don't know near as much about aerodynamics as they think they do. Although every once in a while they do some interesting stuff.


3 degrees is NOT the ideal diffuser angle, especially when you have a compound divergent upper surface (a boat tail), that is working the airflow as hard as it can. Which BTW, flow is NOT attached to the rear hatch window on a stock S13. It separates 1/3-1/2 of the roofline back from the front windshield. Boundary layer is around 3/8" at the start of the rear hatch, and grows quite a lot from there. Vortex generators will reattach it, at the expense of drag. Your rear aero determines if attached flow is worth it.

So to sum it up, they're working the air over the top of the car extremely hard, with really aggressive divergent angles, and then say 3 degrees is the ideal rear diffuser angle? That's completely crazy. You can easily go to 6-8 degrees and ensure you won't have separation in a diffuser if you're expelling to a low presssure area (i.e. the rear bumper), and probably even if you completely boat tail the rear (higher pressure at the diffuser exit). But really, even diffuser angles of 10-12 degrees can work when pumping to a low pressure area, but at that point, you probably need to start considering the 3D effects of the flow like how it's coming in from the side skirts and around the rear suspension area.

For the average car here, you could easily do a 7 degree diffuser and be fine. But I would not even think of bothering for a street car. You probably won't feel much of a difference unless you get a big splitter, flat bottom leading to the diffuser, and wing. The splitter and wing do most of the work, the splitter pumps more air out the underside of the car and makes the splitter and underbody produce more downforce. Just putting a diffuser on the rear doesn't really help much just because there's not a nice large area of attached flow to accelerate and get a benefit of.

And BTW - the stock S13 gas tank actually makes a halfway decent diffuser, but the angle is a bit steep at the end, bordering on 12-15 deg by my measurements.

[ehhhregartless]

^Ideally, sector times should change on a given track between the turns and straights. Turns should be faster because you're able to put down all the power that you make with max grip. And straight line speed would go down a bit. But not enough to negate the gains from the turns. Yes, overall your gains would eventually become less and less after which you'd adjust and add power.

https://naritadogfight.files.wordpress.com/2015/01/ndf_8759-edit.jpg
https://naritadogfight.files.wordpress.com/2015/01/ndf_8755-edit.jpg

[OBEEWON]

^^^ http://stream1.gifsoup.com/view4/1108179/bieber-heart-o.gif

[ehhhregartless]

At 4:35 is what i was trying to explain. The whole video is definite worth the watch.

http://youtu.be/v_767VQBFi0

http://www.speedhunters.com/wp-content/uploads/2013/10/WTAC-13-Overview-11-1200x800.jpg

[ehhhregartless]

http://www.zengarage.com.au/wp-content/uploads/2014/11/WTAC-2014-5818-1000PX-WM.jpg

[ehhhregartless]

http://image.superstreetonline.com/f/89547322+q80+re0+cr1/Tokyo-Auto-Salon-2015-II-79.jpg
http://image.superstreetonline.com/f/85044485+w+h+q80+re0+cr1/Tokyo-Auto-Salon-2015-120.jpg
http://image.superstreetonline.com/f/85044233+w+h+q80+re0+cr1/Tokyo-Auto-Salon-2015-119.jpg

[ehhhregartless]

https://fbcdn-photos-a-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-0/1098234_543456912375716_334287324_n.jpg?efg=eyJpIj oidCJ9&oh=3cb597c3fd7d6f2d33bbd43655c20210&oe=553C76CC&__gda__=1430760237_7146ff015e986a24a7b617a302e48fd 0

[kognition]

Looks great!

So I have been looking around on here trying to find proper info on wing angle, wing stand types, front splitters, diffusers, canard info, and other downforce aero related info...but didn't find much, if anything. I figured we should have a thread to post up questions/info/photos on our wing, splitter, canard, diffuser setups. I think this will help some of the future aspiring track guys on here.

Rules: Only post info, pictures, questions regarding downforce aero.



Here's mine to get it started.

It's a 70" Kognition Designs carbon fiber chassis mounted quick disconnect wing.

http://i1369.photobucket.com/albums/ag224/Imarvin240/274_zps1e998ae0.jpg (http://s1369.photobucket.com/user/Imarvin240/media/274_zps1e998ae0.jpg.html)
http://i1369.photobucket.com/albums/ag224/Imarvin240/254_zps403c0f0a.jpg (http://s1369.photobucket.com/user/Imarvin240/media/254_zps403c0f0a.jpg.html)
http://i1369.photobucket.com/albums/ag224/Imarvin240/178_zps1fe51719.jpg (http://s1369.photobucket.com/user/Imarvin240/media/178_zps1fe51719.jpg.html)

It's an extremely well made product and it's a well proven product on the track. The quick disconnect is just a few pins on each side that get pulled out to remove the wing, which then allows the hatch to open easily. The whole kit is super easy and simple to put together. The only tough part would be cutting the hatch in the correct spot lol. Touge Factory will be doing a full carbon fiber underbody diffuser, front splitter, and canards on the car, which I will post up later.


Looking forward to seeing some of the other setups on here and hopefully learning a few things as well.

[kognition]

GST Motorsports driver Jeff Westphal reset the all time track record at ButtonWillow at the recent GTA/SLB time attack event this past November. They use our 76" span chassis mount kit for the GC8.
https://s3.amazonaws.com/files.websitetoolbox.com/180367/2315350

[Xplat]

Figured this video belongs here.

https://www.youtube.com/watch?v=quDLzxmJl5I

[ehhhregartless]

That's a very informative vid, definitely learned a lot from it. Looks like I'll couple that with this DIY for aero testing/development in the spring

http://www.autospeed.com/cms/article.html?&A=108656

http://us1.webpublications.com.au/static/images/articles/i1086/108656_7mg.jpg

[crzsteveo]

^same here. that's definitely the best alternative to a wind tunnel

[crzsteveo]

I love time attack cars.

http://www.youtube.com/watch?x-yt-cl=84924572&v=SLQGjRA4OX0&x-yt-ts=1422411861

[ehhhregartless]

http://www.zengarage.com.au/wp-content/uploads/2012/07/DSC_0203.jpg

[voiddweller]

+1 you probably want to move this to the tech section.....


Thank you!

The summary you put together pretty much sums up all the research I've been doing over the past several months and should definitely be 'stuck' for the benefit of the community.

[ehhhregartless]

http://i890.photobucket.com/albums/ac103/Guilty1s/IMG_8465.jpg

[ehhhregartless]

http://i0.wp.com/www.the-lowdown.com/wp-content/uploads/2011/07/s-chassis.jpg

[NISSeAN]

I generally don't like body kits but the GP sports looks awesome and functional http://imageshack.com/a/img661/5684/DZmu0G.jpg

[ehhhregartless]

^2nd, one of my favs

http://www.zengarage.com.au/wp-content/uploads/2015/04/IMG_1345.jpg

[ehhhregartless]

http://the-lowdown.com/media/event/wtac/2012/pits/IMG_4825.jpg

[silviasandbeer]

cliff notes.. add canards
cool vid ehhhhhregardlessssss

https://www.youtube.com/watch?v=Pgpawejpi6o

[voiddweller]

Interesting video!

[crzsteveo]

add canards and rake chassis depending on the angles of wings/canards/splitters. god there is so much to do to find the right balance....if you can find that balance.

[ehhhregartless]

That's why time attack is so interesting to me.

http://24.media.tumblr.com/tumblr_lkbqx8NHbg1qg513zo1_500.jpg

[ehhhregartless]

http://the-lowdown.com/media/event/wtac/2013/pit-lane/IMG_0379.jpg

[ehhhregartless]

https://farm8.staticflickr.com/7631/16956112677_a81b84c89a_b.jpg

[7evil]

https://c1.staticflickr.com/1/415/19178985308_bc13239c3a_o.jpg

[ehhhregartless]

http://image.superstreetonline.com/f/127903655+w+h+q80+re0+cr1/car-modify-wonder-hardcore-japan-nikko-drift-25.jpg

[ehhhregartless]

https://farm1.staticflickr.com/286/18888684793_352c4a901f_o.jpg

[voiddweller]

For your downforce fetish...

[ehhhregartless]

http://mduece.files.wordpress.com/2014/04/a40a818c56.jpg?w=1875&h=1251

[ehhhregartless]

http://www.the-lowdown.com/media/heasmans/s14/IMG_2189.jpg

[ehhhregartless]

http://www.speedhunters.com/wp-content/uploads/2015/08/Eirik-Aade-Gatebil-08.jpg
http://www.speedhunters.com/wp-content/uploads/2015/08/Eirik-Aade-Gatebil-09.jpg

[ehhhregartless]

WTAC 2015 is around the corner

http://www.worldtimeattack.com/wp-content/gallery/2014_wtac_friday/0P8A9482.jpg

[ehhhregartless]

https://farm8.staticflickr.com/7726/17134461432_304bdbc961_h.jpg

[ehhhregartless]

https://farm6.staticflickr.com/5607/15422005330_7577010d04_b.jpg

[ehhhregartless]

https://intensifyboredom.files.wordpress.com/2015/09/another-glance-at-final-bout-c2a9-andor-15.jpg?w=1000

[OBEEWON]

https://farm1.staticflickr.com/739/21406754552_6cbf810eaf_c.jpg

[turbo2nr]

^winner!!!!

[TheRealSy90]

I wish more people would build JGTC style 240's, they're low as fuck with full suspension performance since I believe they're basically body dropped over the subframes. Wheel arches cut up real high but still close to the tire etc.

[ehhhregartless]

https://img5.onroaders.com/images/cache/3/gatebil-rudskogen-2014-the-one-in-september-16570-ps1316570-880x-90.jpg
https://img2.onroaders.com/images/cache/3/gatebil-rudskogen-2014-the-one-in-september-16628-ps1316628-880x-90.jpg

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2014/12/img_5073-edit.jpg?w=1000

[7evil]

http://image.superstreetonline.com/f/148769435+w+h+q80+re0+cr1/offset-kings-gridlife-chicago-custom-s13

[ehhhregartless]

http://www.farmofminds.com/wp-content/uploads/2014/12/1600x1060xUnder-Suzuki-Time-attack-S15.jpg.pagespeed.ic.sMs2lffbiU.jpg

[ehhhregartless]

http://image.superstreetonline.com/f/154658918+w+h+q0+re0+cr+ar0/sutton-bros-nissan-s15-silvia-voltex-rear-wing

[Malik]

boss........

[ehhhregartless]

https://c2.staticflickr.com/6/5667/22324488778_87a2f6358b_b.jpg

[greddy2die]

http://www.speedhunters.com/wp-content/uploads/2015/10/WTAC-2279-800x533.jpg
http://www.speedhunters.com/wp-content/uploads/2015/10/WTAC-1908-800x533.jpg

[Malik]

http://www.sard.co.jp/race_r/r2006/rd1/gallery/photo/012.jpg

[Malik]

http://motivedvd.com/motive/wp-content/uploads/2015/10/JET200-WTAC15.jpg

[ehhhregartless]

http://www.worldtimeattack.com/wp-content/uploads/2015/10/suzuki33.jpg

[Z_Spool]

I'm not usually into front end conversions, but I've got to admit... The S15 front end looks really good on that wing.

[CrimsonRockett]

I'm not usually into front end conversions, but I've got to admit... The S15 front end looks really good on that wing.

:rofl:

I'm all for time attack, but damn these things are getting insane.

[ehhhregartless]

http://www.farmofminds.com/wp-content/uploads/2015/10/20150920-DSC00216-copy.jpg

[7evil]

https://naritadogfight.files.wordpress.com/2015/12/img_2453-edit.jpg?w=1024

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2015/12/img_0972-edit.jpg?w=1200

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/hphotos-xtp1/v/t1.0-9/fr/cp0/e15/q65/10430451_361949500663452_4894987521838447796_n.jpg ?efg=eyJpIjoidCJ9&oh=abc5a90a45b381311a910c2ab0e3bd05&oe=570B36C5
https://scontent-iad3-1.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/fr/cp0/e15/q65/150772_361949587330110_8748109551127016347_n.jpg?e fg=eyJpIjoidCJ9&oh=e0e33874b4991aa06558e67e3feffa5e&oe=570C69CC

[ehhhregartless]

https://ra64freddy.files.wordpress.com/2015/09/11157412_586622608146373_3935664061737760721_o.jpg ?w=1240&h=824

[ehhhregartless]

https://ra64freddy.files.wordpress.com/2013/03/s15s.jpg?w=1200

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2016/02/img_5137-edit.jpg?w=1200

[ehhhregartless]

https://ra64freddy.files.wordpress.com/2012/09/0000001.jpg?w=1200

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/hphotos-xft1/v/t1.0-9/fr/cp0/e15/q65/12801352_1029993340445623_1364080449854601067_n.jp g?efg=eyJpIjoidCJ9&oh=e7a0b7ba7e5e78b86b4507f6077ca93e&oe=575B7336

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2016/03/img_4920-edit.jpg

[DRFT180]

Damn I do enjoy a good grip/time attack S-Chassis.

http://speedhunters-wp-production.s3.amazonaws.com/wp-content/uploads/2008/09/IMG_1395_0z9j_0.jpg

https://naritadogfight.files.wordpress.com/2013/10/dsc4311.jpg

[Malik]

can anyone guess what rear diffuser this is?

https://pbs.twimg.com/media/Bq62jGeCMAA73FU.jpg

[Maximum]

its a shine diffuser.

[dorkidori_s13]

https://ra64freddy.files.wordpress.com/2013/03/s15s.jpg?w=1200

sweet baby jesus! RIGHT IN THE FEELS!!!! :eek::eek::eek:

[Malik]

its a shine diffuser.

thanks

http://i1377.photobucket.com/albums/ah42/Malik_Francois/tumblr_nxhgyejqXx1u8imavo1_1280_zps4auynqpn.jpg

[Z_Spool]

Stay classy Florida.

[turboshoebox]

that red car is done really well but it has to be ruined by the american trend of the catch phrase on the car UGH

[laextreme5]

Damn, finally a quality thread on here. In the coming months i will have plenty to add in here from my build. Aero is one of the few things that fully captures my aspirations and allows full creativity.

[ehhhregartless]

Damn, finally a quality thread on here. In the coming months i will have plenty to add in here from my build. Aero is one of the few things that fully captures my aspirations and allows full creativity.

http://i.imgur.com/Ktcd2.gif

[Malik]

Stay classy Florida.

yeah that sticker is definitely flagrant

[KAT-PWR]

Isn't that ping? His last rendition had "Twerk it Miley" under the wing.

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2016/03/img_5026-edit.jpg

[ehhhregartless]

https://alscarstuff.files.wordpress.com/2009/09/sunline-racing-350z.jpg?w=1304

[7evil]

http://uploads.tapatalk-cdn.com/20160325/9ac4e500c9a58befe3acf03c386d7cc7.jpg
http://uploads.tapatalk-cdn.com/20160325/77e738f7b19c066743fa1599562bf7f4.jpg

[OBEEWON]

That wing looks as effective as the electoral college.

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/hphotos-ash2/v/t1.0-9/fr/cp0/e15/q65/10685327_10152694286056840_538716846773993315_n.jp g?efg=eyJpIjoidCJ9&oh=855af8aaa01479739d5b237e3df55af5&oe=5791534B

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2016/03/img_5130-edit.jpg?w=1200

[ehhhregartless]

https://z-1-scontent-iad3-1.xx.fbcdn.net/hphotos-xat1/t31.0-8/fr/cp0/e15/q65/10887673_10153093565316840_3323827114351746419_o.j pg?efg=eyJpIjoidCJ9

[ehhhregartless]

https://ra64freddy.files.wordpress.com/2016/04/s15-bbs.jpg?w=1240&h=824
https://ra64freddy.files.wordpress.com/2016/04/s15-bbs1.jpg?w=1240&h=824

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/12936633_1224541354242419_8403978624959164737_n.jp g?efg=eyJpIjoidCJ9&oh=a0bd904b2f5e31bba88aa260e9ebacf0&oe=579E6802

[Malik]

http://i1111.photobucket.com/albums/h463/k1984w/180sx%20build%202013/36B04965-0A17-49FC-B603-A3D81EAC9B6A.jpg

[dorkidori_s13]

DAMN MOCO, WITH THE OLD SCHOOL BANDOH SEALAZONE VALANCES AND SHIT!!!

hehe ;)

[ehhhregartless]

http://livedoor.sp.blogimg.jp/garagemak/imgs/1/8/18da3d1b.jpg

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/t31.0-8/fr/cp0/e15/q65/11120505_956134881071956_41943384743655027_o.jpg?e fg=eyJpIjoidCJ9

[ehhhregartless]

http://livedoor.sp.blogimg.jp/garagemak/imgs/3/4/34bd0d4f.jpg
http://livedoor.sp.blogimg.jp/garagemak/imgs/1/a/1a507f0f.jpg

[ehhhregartless]

Can't get enough of this build

http://livedoor.blogimg.jp/garagemak/imgs/1/6/1686336a.jpg
http://livedoor.blogimg.jp/garagemak/imgs/0/a/0a7422de.jpg
http://livedoor.blogimg.jp/garagemak/imgs/5/4/5430e867.jpg

[CaptainVlad]

Wing mounted to a frame tied into the frame rails under the hatch, and front splitter also mounted to frame rails and supporting metal parts of the car.

https://c7.staticflickr.com/8/7610/27322047110_7686db1e0d_b.jpg

[kOOpA]

One of Team Rowdy's multi-tarented drift/grip drivers, Erin Sanford's car. He took 1st place in the Limited RWD class this year at Global Time Attack Road Atlanta.

https://cfdrift.files.wordpress.com/2016/06/eringtaroadatlantapits.jpg?w=1000 (https://cfdrift.files.wordpress.com/2016/06/eringtaroadatlantapits.jpg)
click for full-size

https://cfdrift.files.wordpress.com/2016/06/eringtaroadatlantafrontquarter.jpg?w=1000 (https://cfdrift.files.wordpress.com/2016/06/eringtaroadatlantafrontquarter.jpg)

https://cfdrift.files.wordpress.com/2016/06/eringtaroadatlantaside.jpg?w=1000 (https://cfdrift.files.wordpress.com/2016/06/eringtaroadatlantaside.jpg)

photos by SuperStreet (http://www.superstreetonline.com), full article here (http://www.superstreetonline.com/event-coverage/motorsports/1605-global-time-attack-rd-1-road-atlanta-ga/)

[ehhhregartless]

I like what he's done over the years

http://tougefactory.com/shop/wp-content/uploads/2016/06/RAL_8905.jpg

[ehhhregartless]

http://www.worldtimeattack.com/wp-content/uploads/2016/04/WTAC_webstory_suzuki5.jpg

[Quail]

Grabbed a few snaps of a friend's track car recently. This thing is scary on the road.

https://pbs.twimg.com/media/ClTozwcWMAEXZfX.jpg

[ehhhregartless]

http://livedoor.blogimg.jp/garagemak/imgs/c/6/c60df3b3.jpg

[spray2020]

Bomex front bumper, version 3 kouki w/ pignose vents- paired with a bunch of carbon goodness! Unique :)

http://cdn.snsimg.carview.co.jp/minkara/userstorage/000/023/503/668/3ecd6f125b.jpg?ct=d9ce2aea1fce
http://cdn.snsimg.carview.co.jp/minkara/userstorage/000/021/725/472/81f2c7603c.jpg

[ehhhregartless]

^ dang

https://naritadogfight.files.wordpress.com/2016/07/img_4586.jpg?w=1248&h=812

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/l/t31.0-8/fr/cp0/e15/q65/10373061_875267719154778_5849001875713097021_o.jpg ?efg=eyJpIjoidCJ9

[ehhhregartless]

http://livedoor.blogimg.jp/garagemak/imgs/8/6/861a58bd.jpg

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/13096180_1243167165713171_3801918741701459001_n.jp g?efg=eyJpIjoidCJ9&oh=85ee9158cbd6a0588fdba25105f7ecd4&oe=58128E32

[GabeS14]

wish I knew more of the brand names that make these larger canards and where to buy them, I cant ever find the entire selection and only find Voltex stuff. limited tho.

[ehhhregartless]

^http://garagemak.sakura.ne.jp/wp/s15-type6-gt/

https://scontent-lga3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/602647_550213478326872_66539282_n.png.jpg?efg=eyJp IjoidCJ9&oh=5c12b4859b8a37cd989ea62dd2fe8426&oe=581D577A

[ehhhregartless]

https://scontent-lga3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/14068160_1147118638659502_7312448663881870592_n.jp g?efg=eyJpIjoidCJ9&oh=05c435746e84cddae034f1148dcb3feb&oe=58430310
https://scontent-lga3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/14183750_1147118605326172_8015352036561621891_n.jp g?efg=eyJpIjoidCJ9&oh=002f483fe5b0cdb07ccfb05b3b960c81&oe=5844B447
https://scontent-lga3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/14055123_1147118588659507_2594664382538714222_n.jp g?efg=eyJpIjoidCJ9&oh=d5e57cd2e16e704e3b9ebd09273e9cf6&oe=58490926

[GabeS14]

^http://garagemak.sakura.ne.jp/wp/s15-type6-gt/

https://scontent-lga3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/602647_550213478326872_66539282_n.png.jpg?efg=eyJp IjoidCJ9&oh=5c12b4859b8a37cd989ea62dd2fe8426&oe=581D577A

Thank you, happen to have any more for other brands? maybe some easily found in the US?

[ehhhregartless]

RHDJapan and GTR Garage can help with importing. Alibaba has some reps for cheap but who knows how that'll turn out. Most people stateside DIY. Good luck

https://naritadogfight.files.wordpress.com/2016/07/img_4809.jpg

[GabeS14]

Yessir, Thanks a lot!

[Malik]

http://www.stancenation.com/wp-content/uploads/2013/10/nakagawa-badquality-nissan-rocket-bunny-13.jpg

[Malik]

https://img.ifcdn.com/images/a5deb4a707e9c688529ba1ade400572766dbe0f84dccb1f161 77e52d09fda95f_1.jpg

[OBEEWON]

RHDJapan and GTR Garage can help with importing. Alibaba has some reps for cheap but who knows how that'll turn out. Most people stateside DIY. Good luck


You ever use Alibaba? I tried to buy some stuff through them but they wanted high quantity.

[ehhhregartless]

I've never personally ordered from there but I think some merchants are willing to place single orders

https://naritadogfight.files.wordpress.com/2016/05/dsc_1986.jpg?w=980
https://naritadogfight.files.wordpress.com/2016/05/dsc_1984.jpg

[dorkidori_s13]

OMG! THAT THING IS BITCHEN!!! So much want!

[TheRealSy90]

I'd definitely do a flat bottom tray across my frame rails if they weren't all smashed to shit, maybe some day if I change to a fresh shell.

[CrimsonRockett]

Curious to see how much work was needed to make all of that bolt on.

[heychris]

Ditto

sent from knee deep in snow

[Malik]

https://65.media.tumblr.com/a846117b72e0f802a591b6ec41117034/tumblr_nrctevyKRF1u8imavo1_500.jpg

[GabeS14]

You ever use Alibaba? I tried to buy some stuff through them but they wanted high quantity.

That's what AliExpress is for, buying individual parts, its the store for non bulk.
As many times as I have gone there I never convinced myself to go ahead and buy. but I would buy if I was sure that product would fit or work for my vehicle.

[Malik]

https://discofever33.files.wordpress.com/2011/12/381254_281049128612047_106576446059317_841463_9432 29372_n.jpg

[Malik]

https://s-media-cache-ak0.pinimg.com/736x/11/9b/12/119b12dbf624d15e1102631dc19ff135.jpg

[ehhhregartless]

http://www.stancenation.com/wp-content/uploads/2014/05/Bad-Quality-StanceNation-Meet-115.jpg
http://www.stancenation.com/wp-content/uploads/2014/05/Bad-Quality-StanceNation-Meet-116.jpg
http://www.stancenation.com/wp-content/uploads/2014/05/Bad-Quality-StanceNation-Meet-117.jpg

[ehhhregartless]

https://scontent-iad3-1.xx.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/14088553_1146005745437458_8203220945668284943_n.jp g?efg=eyJpIjoidCJ9&oh=b751dbc8af483ba57a438af702c2a143&oe=5837C054

[ehhhregartless]

https://scontent-lga3-1.xx.fbcdn.net/t31.0-8/fr/cp0/e15/q65/458820_406788762692497_1493742535_o.jpg?efg=eyJpIj oidCJ9

[Bushido]

ehhhregartless always with the hot pics

[dorkidori_s13]

he needs to change his title to "picture hoor!" :)

[ehhhregartless]

I'm fine with that status title Mods

http://www.worldtimeattack.com/wp-content/uploads/2016/09/WTAC_webstory_SGT18.jpg

[ehhhregartless]

http://www.worldtimeattack.com/wp-content/uploads/2016/10/Topstage.jpg

[Malik]

http://carshype.com/wp-content/uploads/2013/08/DSC2800-EDIT.jpg

[Malik]

http://image.superstreetonline.com/f/71782449+w660+h440+q80+re0+cr1/1990-nissan-silvia-s13-rocket-bunny-rear-diffuser-07

[greddy2die]

http://speedhunters-wp-production.s3.amazonaws.com/wp-content/uploads/2016/10/14012316/wtac_2016_aero_matthew_everingham_05-1200x800.jpg

[ehhhregartless]

http://www.worldtimeattack.com/wp-content/uploads/2016/10/Sutton-bros.jpg

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2016/10/ndf_2498.jpg

[ehhhregartless]

https://scontent.fagc1-1.fna.fbcdn.net/v/t31.0-8/fr/cp0/e15/q65/15392890_1163755467034134_3658202060393674020_o.jp g?efg=eyJpIjoidCJ9&oh=ae2f9059690fda419647b49f270bb00d&oe=58AE6223

[REVGASM]

https://revgasm.files.wordpress.com/2016/07/img_3275.jpg

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2016/12/img_4547.jpg

[Malik]

http://livedoor.blogimg.jp/f2398/imgs/c/f/cf695643.jpg

[Boxheadmr]

http://livedoor.blogimg.jp/f2398/imgs/c/f/cf695643.jpg
Think there is a fittment thread for that one

Sent from my GT-I9507 using Tapatalk

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2017/02/dsc_0654.jpg

[jared420sx]

https://uploads.tapatalk-cdn.com/20170220/b57e4c29794fce475d5d08b082671b25.png
https://uploads.tapatalk-cdn.com/20170220/ab8a71a7472055aad4b82d10bb8e41c9.jpg


Sent from my iPhone using Tapatalk

[Bushido]

GG-R BNR34
http://cdn.snsimg.carview.co.jp/minkara/photo/000/004/446/613/4446613/p6.jpg?ct=34c3e1ce801d
DOXAESr5T2o

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2017/02/ndf_4376.jpg

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2017/03/ndf_4670.jpg

[LuckyX2]

https://www.youtube.com/watch?v=5kEVkcPwlZ4

Time lapse of me making a bigass wing for my street modified S13.

[Ruff Ryder 6]

https://www.youtube.com/watch?v=5kEVkcPwlZ4

Time lapse of me making a bigass wing for my street modified S13.

Just watched your video. Did you make the starting profile that you were wrapping in carbon fiber? If not, where did you get it?

[LuckyX2]

Just watched your video. Did you make the starting profile that you were wrapping in carbon fiber? If not, where did you get it?

flyingfoam.com

You can specify what profile you want, width and chord length.
Was only like $50 for my 65" core, very reasonable.

[Ruff Ryder 6]

What are the specs on the one you purchased? I see the custom section, but requires a $200 order minimum.

[LuckyX2]

http://flyingfoam.com/product/quick-order-cores-single-panel/

2# EPS, 65" span, 17.5" chord, E423 profile. $43.98.

[240sxScores]

I've been researching DIY wings for a couple weeks now and have seen that website but never saw that airfoil profile as available. Its the exact one I've been playing around with in Solidworks. Buying it from them might be MUCH easier than hot wire cutting my own. hmmm

Are you bringing the SM car to NEPA events ? I'm trying to get mine together in time for the first Pocono event.

[LuckyX2]

I've been researching DIY wings for a couple weeks now and have seen that website but never saw that airfoil profile as available. Its the exact one I've been playing around with in Solidworks. Buying it from them might be MUCH easier than hot wire cutting my own. hmmm

Are you bringing the SM car to NEPA events ? I'm trying to get mine together in time for the first Pocono event.

I was actually at the Pocono event last year in the janky af looking multicolor 240 hah. Hoping to attend again this year (and be painted one color).

And I think he may have added that profile because of me or partly because of me, I don't think it was available as one of the standard options back when I emailed him about it at the end of last season.
I'd say definitely just buy it. A lot less work and it's only $44 plus shipping anyway.

[edspecR]

flipping through this thread makes me drool over silvias again like in junior high!

[ehhhregartless]

https://scontent.fztf1-1.fna.fbcdn.net/v/t1.0-9/fr/cp0/e15/q65/22886290_1468546653221679_7606937063639753901_n.jp g?efg=eyJpIjoidCJ9&oh=04c142d25c468db3292b162e4f7d8db4&oe=5AA475E3

[spooled240]

Anyone ran these types of wings where they mount to either plastic or fiberglass on OEM/OEM style wing bases? Seems like the downforce would be too much for the wing bases, but I just don't know. Maybe the profile of the wing limits the amount of downforce? This is pretty popular with the Porsche guys.
https://i.ytimg.com/vi/naDx6oMZY7s/maxresdefault.jpg
http://i1145.photobucket.com/albums/o519/djoe77/208364_412630972126965_12399189_n_zps7a6df2f3.jpg

[ehhhregartless]

https://naritadogfight.files.wordpress.com/2017/04/ndf_4668.jpg