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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-24-2013, 06:43 PM   #1 (permalink)
Hydrogen > EV
 
Join Date: Apr 2012
Location: NW Ohio, United States
Posts: 2,017

Snow White and the 6.2 Dwarfs - '11 Chevrolet Corvette LT2
Last 3: 26.46 mpg (US)

Silver Flea - '05 Honda Insight
90 day: 58.96 mpg (US)
Thanks: 981
Thanked 383 Times in 279 Posts
2012 Mustang Kammback

Hello all,

Would anyone be willing to add the tear drop template in the most aerodynamic way to an image of my vehicle? I will be posting it shortly, as my image is almost 10x too big to upload.

I have desired doing the Kammback all along, but as a member mentioned using a bike rack as a frame- I think it is a huge opportunity to make one. I am in process of the underbody, but since hitting 39 mpg, I want 40. The underbody will help me, and I think the Kammback will be a great addition.

__________________





Best Tanks:
Mustang - 54.83 mpg (US) at the Green Grand Prix
Insight - 82.91966 mpg (US) over 818.5 miles.
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-24-2013, 07:52 PM   #2 (permalink)
The Dirty330 Modder
 
Gealii's Avatar
 
Join Date: Dec 2011
Location: North East Ohio, USA
Posts: 642

CruzeRS - '15 Chevy Cruze LT RS
90 day: 41.29 mpg (US)
Thanks: 10
Thanked 67 Times in 59 Posts
Here is the website you can use to do more templates
http://www.weirdcalculator.com/test/aero_template/

all you have to do is align the 0 with the highest point on the roof

This good enough?
Attached Thumbnails
Click image for larger version

Name:	aerostang.jpg
Views:	378
Size:	78.7 KB
ID:	13078  
__________________



"The only real mistake is the one from which we learn nothing."
- Henry Ford
  Reply With Quote
The Following User Says Thank You to Gealii For This Useful Post:
UltArc (05-24-2013)
Old 05-24-2013, 08:11 PM   #3 (permalink)
Hydrogen > EV
 
Join Date: Apr 2012
Location: NW Ohio, United States
Posts: 2,017

Snow White and the 6.2 Dwarfs - '11 Chevrolet Corvette LT2
Last 3: 26.46 mpg (US)

Silver Flea - '05 Honda Insight
90 day: 58.96 mpg (US)
Thanks: 981
Thanked 383 Times in 279 Posts
Quote:
Originally Posted by Gealii View Post
Here is the website you can use to do more templates
Aero Template Overlay ver.0.6.2-alpha

all you have to do is align the 0 with the highest point on the roof

This good enough?
I was just about to update with my photo!

Thank you Gealii!

I am not very familiar with rear flow, and boat tails/kammbacks, is this the generally accepted best way to do this? I wasn't sure of this, verse starting the layout at the very front. I am not familiar with it, so I definitely need the assistance.
__________________





Best Tanks:
Mustang - 54.83 mpg (US) at the Green Grand Prix
Insight - 82.91966 mpg (US) over 818.5 miles.
  Reply With Quote
Old 05-24-2013, 08:24 PM   #4 (permalink)
The Dirty330 Modder
 
Gealii's Avatar
 
Join Date: Dec 2011
Location: North East Ohio, USA
Posts: 642

CruzeRS - '15 Chevy Cruze LT RS
90 day: 41.29 mpg (US)
Thanks: 10
Thanked 67 Times in 59 Posts
Quote:
Originally Posted by UltArc View Post
I was just about to update with my photo!

Thank you Gealii!

I am not very familiar with rear flow, and boat tails/kammbacks, is this the generally accepted best way to do this? I wasn't sure of this, verse starting the layout at the very front. I am not familiar with it, so I definitely need the assistance.
The template is used more so for the rear of the car so if you take the 0 that is right above the roof you take that mark and post it at the highet point. then the horizontal line at the bottom you match up with the bottom of your wheels.
__________________



"The only real mistake is the one from which we learn nothing."
- Henry Ford
  Reply With Quote
Old 05-25-2013, 01:19 AM   #5 (permalink)
Aero Deshi
 
ChazInMT's Avatar
 
Join Date: Jan 2010
Location: Vero Beach, FL
Posts: 1,065

MagMetalCivic - '04 Honda Civic Sedan EX
Last 3: 34.25 mpg (US)
Thanks: 430
Thanked 666 Times in 357 Posts
UltArc, some good news bad news for you.

Bad news, I don't think that a "Kamm" will do anything other than hurt your cars aerodynamics.

Good news, Your car is pretty dern aerodynamic to begin with, and you don't have to build a Kamm.

Here's why I say this.
First, keep in mind the Kamm is meant to remedy a hideous aerodynamic situation on a car which has lousy aerodynamics to begin with.



Uh..Yeah

Your Ford was designed by folks who wanted to make the car as aero as possible here in modern times. One of the key indicators of this is how close it already is to the Aero Template. I have it illustrated here with the newly minted "Faster template" and as you can see it is very close.



One of the main things to really get excited about with your cars aero is that there is a smooth arc from the base of your front window to the bottom of your rear glass. This my friend is Aero Gold. People put Kamms on their crappy aero cars hoping to come close to what you have to start with.



Ford has certainly tweaked the sides of your car to match the flow going over the top, if you screw with this, you'll certainly pay a price.

Bottom line is that your car has been optimized for what you have, short of redesigning the entire car to look like this,



all you can hope to achieve has already been done.

At least in the back. Do seriously consider a grill block if you have not put one on already.
  Reply With Quote
The Following User Says Thank You to ChazInMT For This Useful Post:
UltArc (05-25-2013)
Old 05-25-2013, 03:15 AM   #6 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,685

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,566
Thanked 3,469 Times in 2,172 Posts
Ummmm...
'84 Escort = .36 Cd (or .38- depends on source: http://autopolis.wordpress.com/2011/...e-down-effect/ )
'12 Rustang = .36 Cd

No doubt the Escort enjoys a nice frontal area advantage too...



Squinting... can't... read... Cds... in... aero... section.

But I do love that aero arrow illustrating the flow over the roof!
__________________



Last edited by Frank Lee; 05-26-2013 at 12:08 PM.. Reason: add ad A.D.D.
  Reply With Quote
Old 05-25-2013, 06:08 AM   #7 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 8,996

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 35.24 mpg (US)
Thanks: 6,078
Thanked 1,721 Times in 1,298 Posts
With the Mustang, where does the air go that hits the top part of the bumper and the grill? Is all of that supposed to enter the engine compartment?

Did they put tons of effort into making a car pretend to be aerodynamic?
  Reply With Quote
Old 05-25-2013, 06:13 AM   #8 (permalink)
Eco-ventor
 
jakobnev's Avatar
 
Join Date: Oct 2010
Location: sweden
Posts: 1,221

Princess - '92 Mazda MX-3 GS
House of Tudor
Team Mazda
90 day: 53.54 mpg (US)
Thanks: 51
Thanked 420 Times in 265 Posts
Send a message via MSN to jakobnev
Quote:
Did they put tons of effort into making a car pretend to be aerodynamic?
Yes.
__________________




2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
  Reply With Quote
Old 05-25-2013, 08:59 AM   #9 (permalink)
The Dirty330 Modder
 
Gealii's Avatar
 
Join Date: Dec 2011
Location: North East Ohio, USA
Posts: 642

CruzeRS - '15 Chevy Cruze LT RS
90 day: 41.29 mpg (US)
Thanks: 10
Thanked 67 Times in 59 Posts
Quote:
Originally Posted by Xist View Post

Did they put tons of effort into making a car pretend to be aerodynamic?
no the car is aerodynamic just not in an ecomodder sense. The aero is designed for down force to keep the car on the ground at high speed, which hurts FE
__________________



"The only real mistake is the one from which we learn nothing."
- Henry Ford
  Reply With Quote
Old 05-25-2013, 10:03 AM   #10 (permalink)
wdb
lurker's apprentice
 
Join Date: May 2008
Location: the Perimeter
Posts: 842

PlainJane - '12 Toyota Tacoma Base 4WD Access Cab
90 day: 20.98 mpg (US)
Thanks: 389
Thanked 189 Times in 144 Posts
Quote:
Originally Posted by ChazInMT View Post
UltArc, some good news bad news for you.

Bad news, I don't think that a "Kamm" will do anything other than hurt your cars aerodynamics.

Good news, Your car is pretty dern aerodynamic to begin with, and you don't have to build a Kamm.
That all seems reasonable, especially with the additional explanation (which I won't repeat here). The more practical place to start would be...
Quote:
Do seriously consider a grill block if you have not put one on already.
..that, and smoothing the airflow under the car. The under-car work may pay dividends not only in gas mileage but also in control and handling improvement. Example: I put an undertray on my Honda Fit and gained ~1MPG, plus the car no longer gets blown around by sidewinds or semis at highway speeds, and it's a lot more fun to toss around offramps too.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com