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

Now available from EcoModder: ScanGauge II fuel economy gauge.  Click for details.  

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-24-2009, 08:03 AM   #1 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 12,533

Blackfly - '98 Metro
Team Metro
90 day: 67.07 mpg (US)

ForkenSwift - '92 Metro EV
90 day: 125.37 mpg (US)

U.F.O. - '00 Insight
Team Honda
90 day: 85.75 mpg (US)
Thanks: 302
Thanked 1,019 Times in 568 Posts
2009+ Honda Fit - ideal rear design for Kammback

I saw a 2009 Honda Fit in the metal for the first time a little while ago (yes, I live a sheltered life) and the very first thing I noticed was how the rear lines have really pronounced plan & profile taper:




The converging arcs suggest the beginning of a proper teardrop/airfoil shape.

Which of course led me to think: it would be an ideal starting point for a very organic Kammback extension to improve aero.


(Support Ecomodder.com & get rid of these annoying ads!)      
 
__________________
Latest project: removable Geo Metro boat tail
Latest test: Massive cardboard air dam on a Geo Metro


www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 02-24-2009, 08:18 AM   #2 (permalink)
aero guerrilla
 
Piwoslaw's Avatar
 
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 2,877

Svietlana - '05 307 SW
Diesel
90 day: 55.98 mpg (US)
Thanks: 668
Thanked 361 Times in 229 Posts
That seems to be the trend in new cars, an "incorporated" Kammback. Check out the 3-door Citroen C4.


Here's another example, from a different weight class. The Renault Trafic and Opel Vivaro van has rear light columns which aren't flush with the sides or the back, but allow the sides to curve inward, sort of like the sides of a short Kammback.

__________________
eˇcoˇmodˇding: 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

Piwoslaw's Peugeot 307sw modding thread


Last edited by Piwoslaw; 02-24-2009 at 08:33 AM..
  Reply With Quote
Old 02-24-2009, 09:03 AM   #3 (permalink)
Master EcoModder
 
PaleMelanesian's Avatar
 
Join Date: Dec 2007
Location: Texas
Posts: 1,479

PaleCivic - '96 Civic DX Sedan
Team Honda
90 day: 74.33 mpg (US)
Thanks: 148
Thanked 138 Times in 97 Posts
Look at the Fit Sport - it has a lip spoiler at the top, built just right for aero.

__________________
- - - - -Best 11-mile commute: 105 mpg
- - - - -Best tank: 88.5 mpg / 1133 miles
  Reply With Quote
Old 02-24-2009, 09:09 AM   #4 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 5,674

Daox's Paseo - '97 Paseo
Team Toyota
Last 3: 53.99 mpg (US)

Daox's Prius - '04 Prius
90 day: 54.91 mpg (US)

CM400E - '81 CM400E
Thanks: 185
Thanked 431 Times in 298 Posts
I gotta say I love the Fit, and a boat tail on it would be soooooooooo sweet. Just give it a lower 5th gear and you would really be cranking out some awesome mileage!
  Reply With Quote
Old 02-24-2009, 01:00 PM   #5 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 3,940

Mica Blue - '05 xA RS 2.0
Team Toyota
90 day: 48.22 mpg (US)

Josepha - '08 xD
90 day: 30.76 mpg (US)
Thanks: 513
Thanked 501 Times in 306 Posts
Hi,

I think you can get it with 15" steel wheels -- so you can put smooth wheel covers on it! A grill block for the upper grill would also be an easy thing to do...
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 02-24-2009, 02:35 PM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 12,533

Blackfly - '98 Metro
Team Metro
90 day: 67.07 mpg (US)

ForkenSwift - '92 Metro EV
90 day: 125.37 mpg (US)

U.F.O. - '00 Insight
Team Honda
90 day: 85.75 mpg (US)
Thanks: 302
Thanked 1,019 Times in 568 Posts
Quote:
Originally Posted by PaleMelanesian View Post
Look at the Fit Sport - it has a lip spoiler at the top, built just right for aero.
I had to go looking for a good pic of the car without that spoiler, because I don't think it's an ideal design for MPG - appears to me to angle upward slightly from the angle at the end of the roof, rather than continuing the downward sweep of the roofline.
__________________
Latest project: removable Geo Metro boat tail
Latest test: Massive cardboard air dam on a Geo Metro


www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 02-24-2009, 03:20 PM   #7 (permalink)
Master EcoModder
 
PaleMelanesian's Avatar
 
Join Date: Dec 2007
Location: Texas
Posts: 1,479

PaleCivic - '96 Civic DX Sedan
Team Honda
90 day: 74.33 mpg (US)
Thanks: 148
Thanked 138 Times in 97 Posts
A coworker has one, and it follows the same line as the last bit of the roof. I think the bumps for the hinges play some optical tricks.

You're right, though, that it could curve down a bit more for the best aerodynamics.
__________________
- - - - -Best 11-mile commute: 105 mpg
- - - - -Best tank: 88.5 mpg / 1133 miles
  Reply With Quote
Old 02-25-2009, 12:34 AM   #8 (permalink)
Hybrid Student Driver
 
RH77's Avatar
 
Join Date: Nov 2007
Location: Kansas City Area
Posts: 1,715

Teggy - '98 Integra LS
90 day: 33.02 mpg (US)

IMA - '010 Insight EX
Team Honda
90 day: 45.43 mpg (US)

Tessie - '06 TSX Base
90 day: 28.83 mpg (US)
Thanks: 22
Thanked 20 Times in 19 Posts
I dream of opening the door my garage and finding a Citroén C4 Diesel in my space. Once Honda rivals the utility, efficiency, and emissions of European counterparts, I'll be the first to sign up.

If the Fit is indeed as efficient as most Euro-spec 3- or 5-door hatchbacks, I applaud them. If not, I patiently await...

RH77
__________________
Supporting those devastated by the Joplin Tornado
EF5 / 22-May-2011


_
_
  Reply With Quote
Old 02-25-2009, 12:48 AM   #9 (permalink)
Master EcoModder
 
FastPlastic's Avatar
 
Join Date: May 2008
Location: Ames, IA
Posts: 416

98 Cherokee - '98 Cherokee
90 day: 15.66 mpg (US)

ZX7R Ninja - '99 ZX7R Ninja
90 day: 42.45 mpg (US)
Thanks: 4
Thanked 9 Times in 8 Posts

Just having some fun with Gimp (free photoshop knock-off). It would need some glass to work.
Attached Images
File Type: jpg Crazy honda fit idea.jpg (102.4 KB, 159 views)
__________________

Adjusted for my driving habits. 80%city/20%Highway.
20mpg city/30mpg highway or bust! Check out my mods so far
  Reply With Quote
Old 02-25-2009, 01:15 AM   #10 (permalink)
Pokémoderator
 
cfg83's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 5,724

1999 Saturn SW2 - '99 SW2 Wagon
Team Saturn
90 day: 43.05 mpg (US)
Thanks: 385
Thanked 459 Times in 315 Posts
FastPlastis -

That is sooooooooo cool! That (probably accidental?) rear window detail from the stretch is totally mannerist. If I were doing a teaser-ad, I would only show that window :



CarloSW2

.


(Support Ecomodder.com & get rid of these annoying ads!)      
 
Attached Images
File Type: jpg fit_kamm_window.jpg (13.5 KB, 164 views)
__________________

What's your EPA MPG? Go Here and find out!
American Solar Energy Society
  Reply With Quote
Reply  Post New Thread

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Honda Fit Belly Pan Project Fit Aerodynamics 15 03-10-2011 04:32 PM
2008 Honda Fit -- Opinions Siaharok General Efficiency Discussion 32 03-09-2011 10:29 AM
Honda Insight Concept to Debut at Paris Int. Auto Show SVOboy EcoModder Blog Discussion 32 04-17-2009 10:45 AM
Ecomodded Kia Ceed. Factory fit ecomodding!!! Unheard EcoModding Central 15 09-18-2008 08:31 PM
Honda Not Bringing Fit Hybrid to the US SVOboy EcoModder Blog Discussion 13 08-25-2008 08:37 PM




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2012, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com