Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 01-11-2010, 08:14 AM   #81 (permalink)
recession proof rebel
 
k.civic.f4i's Avatar
 
Join Date: Sep 2009
Location: california
Posts: 129
Thanks: 16
Thanked 11 Times in 4 Posts
looks like purely downforce to me

__________________
how to.....
http://ecomodder.com/forum/showthrea...cks-11998.html
http://ecomodder.com/forum/showthrea...how-12301.html

true wealth comes from good health and wise ways
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-18-2011, 11:01 PM   #82 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: Washington state
Posts: 4

Spud - '94 Ford Aspire SE
Team Ford
90 day: 40.32 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Hi all, I'm trying to decide if my spoiler is doing anything at all to help my mileage.

carphotos.cardomain .com/ride_images/4/400/2161/38498580001_large.jpg
(copy and paste without the space to view link)

This is similar to what my car looks like. The spoiler has a slight upward lip if you look close, but I am unable to determine whether it was designed with FE in mind or teenagers in mind, haha!
Any thoughtful help is appreciated!
  Reply With Quote
Old 04-18-2011, 11:44 PM   #83 (permalink)
Master EcoModder
 
Join Date: Jan 2009
Location: Maui, Hawaii
Posts: 813
Thanks: 5
Thanked 34 Times in 26 Posts
Quote:
Originally Posted by Speed_Bump View Post
Hi all, I'm trying to decide if my spoiler is doing anything at all to help my mileage.

carphotos.cardomain .com/ride_images/4/400/2161/38498580001_large.jpg
(copy and paste without the space to view link)

This is similar to what my car looks like. The spoiler has a slight upward lip if you look close, but I am unable to determine whether it was designed with FE in mind or teenagers in mind, haha!
Any thoughtful help is appreciated!
That looks like it helps.
  Reply With Quote
Old 04-19-2011, 11:49 AM   #84 (permalink)
EcoModding Lurker
 
Join Date: Feb 2009
Location: Princess Anne, MD
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Thumbs up

Speed_Bump:

The Capri's rear end is made such that air has a hard time separating from the vehicle without creating a lot of turbulance. My opinion is that your spoiler is probably helping air separate more cleanly.

Another thing that I might recommend looking into is whether or not your bumper is acting like a scoop, trapping air under the car. If you can find a way to help air get out from under the car better, it would speed up the air flow under the car as well as help fill in the low pressure area directly behind the car.
  Reply With Quote
Old 04-19-2011, 08:08 PM   #85 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: Washington state
Posts: 4

Spud - '94 Ford Aspire SE
Team Ford
90 day: 40.32 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks Daedalus and Winkos, I think that I will just leave that part of my car alone.

I need a replacement front fascia as the lower part of my air dam has been broken. Maybe while replacing the fascia I can add a partial grill block and underbelly pan. These are projects for different threads though.
  Reply With Quote
Old 04-21-2011, 04:07 AM   #86 (permalink)
EcoModding Apprentice
 
Join Date: Apr 2011
Location: Orange Country, CA
Posts: 102

Fiesta - '12 Ford Fiesta SE
90 day: 31.45 mpg (US)
Thanks: 36
Thanked 3 Times in 3 Posts
Ok, so from what I got from all this is this:
A spoiler that points up in the back increases drag, therefore decreasing the aerodynamicness of the car, but keeps it on the ground better which is only good at reeeally high speeds.
A spoiler that is flat or slightly pointed down is good, helping the air flow over the car and decreases drag.

My car's trunk curves down a lot at the end, so as long as its not over like what 12/13 degrees it helps, right?

Last edited by capnbass91; 05-01-2011 at 01:59 PM..
  Reply With Quote
Old 04-21-2011, 02:36 PM   #87 (permalink)
T-100 Road Warrior
 
BamZipPow's Avatar
 
Join Date: Apr 2008
Location: The Woodlands, TX
Posts: 1,920

BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 24 mpg (US)

BZP T-100 (2011) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 23.66 mpg (US)

BZP T-100 (2009) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 19.01 mpg (US)

BZP T-100 (2012) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
Last 3: 25.45 mpg (US)

BZP T-100 (2013) - '98 Toyota T-100 SR5
Last 3: 25.79 mpg (US)

BZP T-100 (2014) - '98 Toyota T-100 SR5
Last 3: 23.18 mpg (US)

BZP T-100 (2015) - '98 Toyota T-100 SR5
Last 3: 23.85 mpg (US)

BZP T-100 (2016) - '98 Toyota T-100 SR5
Last 3: 17.62 mpg (US)

BZP T-100 (2017) - '98 Toyota T-100 SR5
90 day: 20.78 mpg (US)

BZP T-100 (2018) - '98 Toyota T-100 SR5
90 day: 20.19 mpg (US)

BZP T-100 (2019) - '98 Toyota T-100 SR5

BZP T-100 (2020) - '98 Toyota T-100 SR5

2012 Scion iQ - '12 Scion iQ Base
Thanks: 3,479
Thanked 1,395 Times in 968 Posts
Send a message via ICQ to BamZipPow
Make 4 more posts then...
  Reply With Quote
Old 04-21-2011, 06:57 PM   #88 (permalink)
EcoModding Apprentice
 
Join Date: Apr 2011
Location: Orange Country, CA
Posts: 102

Fiesta - '12 Ford Fiesta SE
90 day: 31.45 mpg (US)
Thanks: 36
Thanked 3 Times in 3 Posts
I got a spoiler that curves a bit at the top for really cheap, ill just sell that and get one that's flat.

Last edited by capnbass91; 05-01-2011 at 02:00 PM..
  Reply With Quote
Old 06-30-2011, 09:17 AM   #89 (permalink)
aero guerrilla
 
Piwoslaw's Avatar
 
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,691

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
Thanks: 1,268
Thanked 721 Times in 458 Posts
I've noticed a lot of Toyota Yarises (Yarii? Yarum? Yarisitachi? "Yaris Yaris"? It's like Indonesian; you double up the noun to pluralize it.) with a spoiler on the rear hatch. Not the typical way-up-there-and-ravage-the-airflow spoiler, but more like a roof extension:
They give the rear a small Kamm effect:

I've seen so many of them in Europe that I'm starting to think they are OEM, yet not all Yarises (Yarii? etc....) have them.
Attached Thumbnails
Click image for larger version

Name:	TYAR1SP1.jpg
Views:	599
Size:	27.2 KB
ID:	8823   Click image for larger version

Name:	yarisrear.jpg
Views:	599
Size:	10.2 KB
ID:	8824  
__________________
e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell


[Old] Piwoslaw's Peugeot 307sw modding thread
  Reply With Quote
Old 06-30-2011, 12:17 PM   #90 (permalink)
Master EcoModder
 
euromodder's Avatar
 
Join Date: Jul 2010
Location: Belgium
Posts: 4,683

The SCUD - '15 Fiat Scudo L2
Thanks: 178
Thanked 652 Times in 516 Posts
Quote:
Originally Posted by Piwoslaw View Post
I've seen so many of them in Europe that I'm starting to think they are OEM, yet not all Yarises (Yarii? etc....) have them.
IIRC, they were a Toyota option.
Rear spoilers weren't standard on most Yaris.

__________________
Strayed to the Dark Diesel Side

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
EcoModding for Beginners: Getting great gas mileage. SVOboy EcoModding Central 55 08-20-2012 11:34 PM
Sources of Aerodynamic Drag in Automobiles and Possible Solutions SVOboy Aerodynamics 12 02-17-2010 02:09 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com