Post your DIY aero pics - Page 14 - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat. 949 Racing - Rim & tires

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 11-14-2012, 06:12 PM   #261
Junior Member
 
Join Date: Aug 2009
Location: melbourne aus
Posts: 425
Total Cats: 36
Default

I have a pic under heavy braking going down a hill. I will see how high it is. My splitter sticks out from the bumper about 3". I don't know what spring rates I have. The coil overs are a cheap set of street b.c coil overs (gold) with whatever spring rates they come with. I payed $600 for them 2nd hand.
lightyear is offline   Reply With Quote
Old 11-15-2012, 03:28 AM   #262
Supporting Vendor
iTrader: (3)
 
Join Date: Jul 2006
Location: San Diego
Posts: 2,575
Total Cats: 234
Default

lol @ using a craftsman deep socket as a measurement unit.

-Ryan
ThePass is offline   Reply With Quote
Old 12-11-2012, 02:12 PM   #263
Elite Member
 
Join Date: Jul 2007
Location: Little Rock, AR
Posts: 3,094
Total Cats: 117
Default

Quote:
Originally Posted by v01canic View Post
What are your thoughts between these two splitters/airdams












Car one is the far superior design. The easiest way to think of aero for me is to imagine the particular part your building being placed in running water ie like a creek. Now your job is to channel that water so it has the least resistance. I know that sounds silly but others have to have their brain wired like mine lol
jacob300zx is offline   Reply With Quote
Old 12-12-2012, 10:03 AM   #264
Junior Member
iTrader: (2)
 
Join Date: Apr 2010
Location: Indianapolis, IN
Posts: 79
Total Cats: 1
Default

Quote:
Originally Posted by jacob300zx View Post
Car one is the far superior design.
Superior for what? The second design will likely create more downforce as it looks to have a greater surface area for the splitter. If that is your goal.
Shahab is offline   Reply With Quote
Old 12-12-2012, 10:05 AM   #265
Elite Member
iTrader: (2)
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,325
Total Cats: 231
Default

Well car 1's design is similar to Crusher. Too bad that car is really slow and never wins any races.
thenuge26 is offline   Reply With Quote
Old 12-12-2012, 10:43 AM   #266
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 28,968
Total Cats: 327
Default

Rear main fail:
hustler is offline   Reply With Quote
Old 12-12-2012, 11:12 AM   #267
Elite Member
 
Join Date: Jul 2007
Location: Little Rock, AR
Posts: 3,094
Total Cats: 117
Default

Quote:
Originally Posted by Shahab View Post
Superior for what? The second design will likely create more downforce as it looks to have a greater surface area for the splitter. If that is your goal.

Car one with the apocalypseTM front end has a more effect means of evacuating the air above the splitter, has less drag, and creates less turbulent air for heat exchangers and brake ducting. Both designs have been tested here in Texas up to 150ish mph. Design one on the same car with no other changes has to run a lot smaller splitter to keep the balance the same. The goal is really to create negative lift on the front end which translates to more downforce, the stock miata bumper is a great design on the top 4"

Here is version 1 that we built in the winter of 2010 for JohnZ's car (spoolin2bars)
http://www.speedhunters.com/2011/03/...w_track_miata/

JohnR, ZXTEX car one, took it forward and used a better material and covered the front tires better with out canards. I have several improvments in my head but need a fresh junk bumper and some free time. Spoolin also needs more rear aero before we improve on the front design. Look how small the splitters are on both the straight down designs, they are more effective period.

Last edited by jacob300zx; 12-12-2012 at 12:03 PM.
jacob300zx is offline   Reply With Quote
Old 12-12-2012, 12:36 PM   #268
Junior Member
iTrader: (2)
 
Join Date: Apr 2010
Location: Indianapolis, IN
Posts: 79
Total Cats: 1
Default

Quote:
Originally Posted by jacob300zx View Post
Car one with the apocalypseTM front end has a more effect means of evacuating the air above the splitter, has less drag, and creates less turbulent air for heat exchangers and brake ducting. Both designs have been tested here in Texas up to 150ish mph. Design one on the same car with no other changes has to run a lot smaller splitter to keep the balance the same. The goal is really to create negative lift on the front end which translates to more downforce, the stock miata bumper is a great design on the top 4"

Here is version 1 that we built in the winter of 2010 for JohnZ's car (spoolin2bars)
CAR SPOTLIGHT>> HOMEBREW TRACK MIATA - Speedhunters

JohnR, ZXTEX car one, took it forward and used a better material and covered the front tires better with out canards. I have several improvments in my head but need a fresh junk bumper and some free time. Spoolin also needs more rear aero before we improve on the front design. Look how small the splitters are on both the straight down designs, they are more effective period.
I agree with you mostly. I think it would be interesting to quantify the differences via CFD.
Shahab is offline   Reply With Quote
Old 12-12-2012, 01:51 PM   #269
Elite Member
 
Join Date: Jul 2007
Location: Little Rock, AR
Posts: 3,094
Total Cats: 117
Default

Look at spoolin2bars birch splitter we made in the post below, it was like a 6" splitter. No other changes but added the apocalypse front end and the splitter had to be trimmed down to 2" to keep the balance the same. I believe ZXTEX had the same experience as us on splitter length once you go to the flat front end.

My attempt @ more front aero. How can i make these better?

I also believe spoolin picked up some mph on several straight's here on local tracks.
jacob300zx is offline   Reply With Quote
Old 12-12-2012, 01:56 PM   #270
Junior Member
iTrader: (2)
 
Join Date: Apr 2010
Location: Indianapolis, IN
Posts: 79
Total Cats: 1
Default

Quote:
Originally Posted by jacob300zx View Post
Look at spoolin2bars birch splitter we made in the post below, it was like a 6" splitter. No other changes but added the apocalypse front end and the splitter had to be trimmed down to 2" to keep the balance the same. I believe ZXTEX had the same experience as us on splitter length once you go to the flat front end.

My attempt @ more front aero. How can i make these better?

I also believe spoolin picked up some mph on several straight's here on local tracks.
I'd like to see what a large front splitter with a flat front air dam would do. Judging from your experience and others you've referenced it would unnecessarily shift the aero balance forward.
Shahab is offline   Reply With Quote
Old 12-12-2012, 02:17 PM   #271
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: woosta, ma
Posts: 8,610
Total Cats: 91
Default

There is some interesting stuff in that thread. Like the structural adhesive tape idea.
Leafy is offline   Reply With Quote
Old 12-26-2012, 11:48 AM   #272
Newb
 
Join Date: Mar 2009
Posts: 15
Total Cats: 0
Default

I'll be running a front air dam and splitter but I'll be going topless. What is the best way to balance out the effects of the front splitter to get rear downforce ? The car will be PT/IT/TT
Thumper13 is offline   Reply With Quote
Old 12-27-2012, 01:36 AM   #273
Junior Member
 
Join Date: Dec 2012
Location: Indianapolis
Posts: 65
Total Cats: 31
Default

Quote:
Originally Posted by v01canic View Post
What are your thoughts between these two splitters/airdams
Depends what your goals are. Personally I think air dams and/or splitters should be used to correct aerodynamic balance after adjusting or changing a rear wing (assuming a diffuser that works is already on the vehicle). The correcting of aerodynamic balance will also add downforce. Also, a decrease in drag can usually be gained by the addition of either a splitter or air dam.

I have simulated both of these types of setups in cfd. If interested, check it out.

https://dl.dropbox.com/u/105015076/a...ata_122612.pdf
plucas is offline   Reply With Quote
Old 12-27-2012, 02:15 AM   #274
Newb
 
Join Date: Mar 2009
Posts: 15
Total Cats: 0
Default

Quote:
Originally Posted by plucas View Post
Depends what your goals are. Personally I think air dams and/or splitters should be used to correct aerodynamic balance after adjusting or changing a rear wing (assuming a diffuser that works is already on the vehicle). The correcting of aerodynamic balance will also add downforce. Also, a decrease in drag can usually be gained by the addition of either a splitter or air dam.

I have simulated both of these types of setups in cfd. If interested, check it out.

https://dl.dropbox.com/u/105015076/a...ata_122612.pdf
Thanks for the response. I definitely need the front down force. I am running with NO hartop and I need a little help figuring the location of the rear wing to help balance out the front. With no top your model is not effective.I don't need to be spinning,chasing my tail due to lack of rear down force. Miatas need all the downforce they can get.
Thumper13 is offline   Reply With Quote
Old 12-27-2012, 03:40 AM   #275
Senior Member
iTrader: (4)
 
mr_hyde's Avatar
 
Join Date: Jul 2009
Location: Seattle
Posts: 799
Total Cats: 25
Default

With no top, the air over the car is a swirling chaotic mess. It's a huge oversimplification, but your wing needs to be as high in the air as possible to have a chance at getting some clear air to cut. Fastback>hardtop>open top for aero.
mr_hyde is offline   Reply With Quote
Old 12-27-2012, 10:40 AM   #276
Elite Member
iTrader: (1)
 
Leafy's Avatar
 
Join Date: Jun 2012
Location: woosta, ma
Posts: 8,610
Total Cats: 91
Default

From what I've heard, on the spoiler cars make more rear downforce running a tonneau cover compared to just a straight open top.
Leafy is offline   Reply With Quote
Old 12-27-2012, 06:00 PM   #277
Newb
 
Join Date: Mar 2009
Posts: 15
Total Cats: 0
Default

Quote:
Originally Posted by mr_hyde View Post
With no top, the air over the car is a swirling chaotic mess. It's a huge oversimplification, but your wing needs to be as high in the air as possible to have a chance at getting some clear air to cut. Fastback>hardtop>open top for aero.
I've been told the hardtop is worth 5 mph at 120 ??? dunno but I need the head space and the roll cage will not fit under the hardtop. I can go 6" ( maybe 8" ) above the front windshield height. I'm just looking for any help you guys might have to offer. Thanks
Thumper13 is offline   Reply With Quote
Old 12-27-2012, 06:12 PM   #278
Junior Member
iTrader: (1)
 
Join Date: Oct 2009
Posts: 208
Total Cats: 0
Default

Thought this deserved a spot in this thread


Quote:
Originally Posted by ThePass View Post
Great idea for a thread. I'll throw a few in here...

Canards/splitter extensions

Mock-up:


Done, awaiting paint:


Working:


Diffuser + Flat-bottom





Hood vent



Fender vent

Made from two separate fenders:



Rear Spoiler

(Oooold pic w/ auto-x angle)
v01canic is offline   Reply With Quote
Old 12-27-2012, 09:24 PM   #279
Junior Member
 
Join Date: Dec 2012
Location: Charlotte, NC
Posts: 227
Total Cats: 14
Default

I really like how he did those front fenders. Is there any more info on them in particular?
Supe is offline   Reply With Quote
Old 12-28-2012, 02:27 AM   #280
Elite Member
 
Join Date: Apr 2010
Location: Newcastle, Australia
Posts: 2,532
Total Cats: 18
Default

What materials are people using for flat underbody's?

Im about to put a front end on an NA the same as the blue car with the big Hoosier sticker, and I have a diffuser to put on the back, I was considering just riveting aluminium angle to the pinch welds and screwing an alumalite panel to it with perhaps a few alluminium angle's running across it for stiffness, and of course the whole exhaust will need to be wrapped.

Is there a foolproof option that wont melt? 1/4 birch seems heavy for an entire undertray.

Dann
nitrodann is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
In need of base map for stock 1997 brandonbkd MEGAsquirt 0 09-29-2015 12:52 AM


Tags
aero, diy, splitter, spoiler, wing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 09:08 PM.