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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-28-2012, 04:21 PM   #11 (permalink)
L/100km
 
Join Date: Aug 2011
Location: Michigan
Posts: 14

Missy - '06 Scion xA
90 day: 35.62 mpg (US)
Thanks: 9
Thanked 11 Times in 2 Posts
More interesting info ..

This was just one presentation from the "The Aerodynamics Challenge Dissemination Event on 19 October 2011"

Some more presentation can be found here :
Coventry University - The Aerodynamics Challenge

__________________

  Reply With Quote
The Following 10 Users Say Thank You to paulu For This Useful Post:
2000mc (03-28-2012), Ardent (03-28-2012), Cd (03-28-2012), euromodder (03-29-2012), gone-ot (03-28-2012), landsailor (03-30-2012), Piwoslaw (03-28-2012), t vago (03-28-2012), turbothrush (03-28-2012), Vekke (03-28-2012)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-28-2012, 04:31 PM   #12 (permalink)
Efficiency Aficionado
 
CigaR007's Avatar
 
Join Date: Jul 2010
Location: Province of Québec
Posts: 605

GreenTurtle - '01 Toyota Echo Sedan
90 day: 44.85 mpg (US)

Zulu - '14 Honda CR-Z
90 day: 39.58 mpg (US)
Thanks: 135
Thanked 135 Times in 94 Posts
I have often wondered if there is a "synergy" effect when combining different drag reduction mods. Would there be a perfect combination ?
  Reply With Quote
Old 03-28-2012, 04:48 PM   #13 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,033
Thanks: 2,258
Thanked 756 Times in 439 Posts
Quote:
Originally Posted by paulu View Post
This was just one presentation from the "The Aerodynamics Challenge Dissemination Event on 19 October 2011"

Some more presentation can be found here :
Coventry University - The Aerodynamics Challenge
This is a gold mine of information !
Thanks so much for sharing .


Is any of this presentation available on YouTube or elsewhere as a video ?
I would have loved to hear what the speakers had to say .
__________________
"You don't fail until you give up. You learn, and move on." - Christ

" Hypermiling is not going slow, it's driving with more intelligence." - UFO

Last edited by Cd; 03-28-2012 at 05:58 PM..
  Reply With Quote
Old 03-28-2012, 05:04 PM   #14 (permalink)
aero guerrilla
 
Piwoslaw's Avatar
 
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,541

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
Thanks: 1,056
Thanked 629 Times in 396 Posts
Quote:
Originally Posted by Vekke View Post
A2 3l Had 0.25
145/80R14 tires
Lower ground clearance
smooth hubcaps
almost fully blocked front grille
smooth underside to some extent
plus lots of small modifications
Plus a lighter rear seat. Did it also have lightweight (magnesium) suspension elements? This, of course, doesn't effect aero.
__________________
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

Piwoslaw's Peugeot 307sw modding thread

  Reply With Quote
Old 03-28-2012, 05:30 PM   #15 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,191
Thanks: 179
Thanked 1,521 Times in 1,122 Posts
...this presentation (aft body taper) looks interesting too: http://wwwm.coventry.ac.uk/researchn...ple%20body.pdf

...and, here's Jaguar info on wheel design: http://wwwm.coventry.ac.uk/researchn...l%20Design.pdf
  Reply With Quote
Old 03-28-2012, 07:31 PM   #16 (permalink)
Master EcoModder
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 980

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)
Thanks: 171
Thanked 501 Times in 217 Posts
Lots of useful data which need lot of thinking to be able to use that when engineering/making parts. I liked those moving wheels, because I had one similar idea that was there also.
__________________


www.tuneko.com
Less drag = Less fuel
  Reply With Quote
Old 03-28-2012, 07:37 PM   #17 (permalink)
Master EcoModder
 
sendler's Avatar
 
Join Date: May 2011
Location: Syracuse, NY USA
Posts: 2,935

Honda CBR250R FI Single - '11 Honda CBR250R
90 day: 105.14 mpg (US)

2001 Honda Insight stick - '01 Honda Insight manual
90 day: 60.68 mpg (US)

2009 Honda Fit auto - '09 Honda Fit Auto
90 day: 38.51 mpg (US)

PCX153 - '13 Honda PCX150
90 day: 104.48 mpg (US)

2015 Yamaha R3 - '15 Yamaha R3
90 day: 80.94 mpg (US)

Ninja650 - '19 Kawasaki Ninja 650
90 day: 72.57 mpg (US)
Thanks: 326
Thanked 1,311 Times in 965 Posts
So is their 2 inch concave tail section showing me I should fit the skin 2 inches long to form a concave at the back of the Kammed off tail I am building for my Vetter style motorcycle?
  Reply With Quote
Old 03-28-2012, 10:12 PM   #18 (permalink)
EcoModding Lurker
 
Join Date: Jul 2010
Location: Illinois
Posts: 93
Thanks: 2
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by sendler View Post
So is their 2 inch concave tail section showing me I should fit the skin 2 inches long to form a concave at the back of the Kammed off tail I am building for my Vetter style motorcycle?
I'm sure with a motorcycle, your Kamm will be much more pointed/tapered than a subcompact car. You could probably get away with six inches of cavity if it gave you much less added weight and if the Kammback was only a few square feet in area.

On a motorcycle, your Cd is basically just a raw factor of your frontal area. That's why a recumbent riding position is one of the most effective ways to bite a chunk off your fuel consumption. As long as your fairing is rigid in the wind, your mpg will kick butt. The rear back inches of the Audi fairing would end up being negligible on a motorcycle when compared to weight gain/frontal Cd.

Good luck with your motorcycle, sendler. We'll all love to see what you'll come up with!
  Reply With Quote
Old 03-28-2012, 10:19 PM   #19 (permalink)
Master EcoModder
 
sendler's Avatar
 
Join Date: May 2011
Location: Syracuse, NY USA
Posts: 2,935

Honda CBR250R FI Single - '11 Honda CBR250R
90 day: 105.14 mpg (US)

2001 Honda Insight stick - '01 Honda Insight manual
90 day: 60.68 mpg (US)

2009 Honda Fit auto - '09 Honda Fit Auto
90 day: 38.51 mpg (US)

PCX153 - '13 Honda PCX150
90 day: 104.48 mpg (US)

2015 Yamaha R3 - '15 Yamaha R3
90 day: 80.94 mpg (US)

Ninja650 - '19 Kawasaki Ninja 650
90 day: 72.57 mpg (US)
Thanks: 326
Thanked 1,311 Times in 965 Posts
Quote:
Originally Posted by sendler View Post
So is their 2 inch concave tail section showing me I should fit the skin 2 inches long to form a concave at the back of the Kammed off tail I am building for my Vetter style motorcycle?
As opposed to just squaring it off at half chord I should say.
  Reply With Quote
Old 03-28-2012, 10:28 PM   #20 (permalink)
EcoModding Lurker
 
Join Date: Jul 2010
Location: Illinois
Posts: 93
Thanks: 2
Thanked 5 Times in 5 Posts
Quote:
Originally Posted by sendler View Post
As opposed to just squaring it off at half chord I should say.
An extra two inches wouldn't hurt. You'd probably see improvement. Beyond two inches of whatever the study Audi used was not stable enough to hold it's shape in the wind.

  Reply With Quote
Reply  Post New Thread


Tags
audi a2, drag, reduction, study, wind tunnel

Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com