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

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 01-03-2013, 12:47 PM   #21 (permalink)
EcoModding Lurker
Join Date: Jul 2012
Location: SC
Posts: 6
Thanks: 0
Thanked 1 Time in 1 Post
Originally Posted by wungun View Post
SVT Focus...nice. I have one of those!
But I converted it over to the Euro only RS Focus model...

But having the engine tuned (for performance) Also gave noticeable gains in mileage.
There are a couple of really good tuners you can talk to on the popular focus forums which would be happy to sell you a flasher with a custom tune...One of which, offers free upgrade tunes if you happen to change somethings like throttle body, exhaust, filter, etc.
I've seen you lurking around the forums and have seen your car. Looks good btw. Also, I have a tune from the inidividual you are talking about

Originally Posted by wmjinman View Post
I just couldn't believe it. "What about the air you're compressing underneath?!?!?! You've GOTTA be causing LIFT!" Not so. The air accelerates under the car just like it would over a wing, producing a low pressure area under there. "But what about the air 'trapped' between the car and the ground?" I asked. The answer: no air is "trapped" - it's flowing under there, and the ground is just the opposite side of the venturi throat. It has to accelerate, causing the pressure to DROP.
I remembered most of this from my aero classes which is why I was thinking/mentioning belly pans. There are a couple of the high end exotics that use them and can actually create a vacuum high enough to keep the car glued to the road, even if the road were to abruptly turn upside down.

  Reply With Quote
The Following User Says Thank You to ccm302 For This Useful Post:
wmjinman (01-03-2013)
Alt Today
Popular topics

Other popular topics in this forum...

Old 01-03-2013, 02:02 PM   #22 (permalink)
Master EcoModder
Join Date: Jul 2008
Location: Silly-Con Valley
Posts: 1,479
Thanks: 199
Thanked 262 Times in 199 Posts
One of the benefits for fuel economy of lowering a car is that, in general, you don't have to slow down as much for corners. So you don't have to spend fuel to get back up to speed again.

In theory, you can get better or worse MPG from lowering your car. It seems that most of us see no benefit or a very small benefit, while some see worse FE, and a few see a lot better (relatively) FE.

Doing A/B testing is a bit more involved for lowering. Even if you have adjustable spring perches ("coil overs") it still takes some fussing to precisely set the ride height.

  Reply With Quote
Old 01-03-2013, 02:29 PM   #23 (permalink)
EcoModding Apprentice
Join Date: May 2012
Location: Indiana, US
Posts: 133

TheCav - '04 Chevy Cavalier LS
Thanks: 13
Thanked 24 Times in 19 Posts
Belly pan.
  Reply With Quote
Old 01-05-2013, 06:33 PM   #24 (permalink)
Master EcoModder
freebeard's Avatar
Join Date: Aug 2012
Location: northwest of normal
Posts: 24,824
Thanks: 7,030
Thanked 7,911 Times in 6,473 Posts
One of Luigi Colani's Bonneville cars was inspired [allegedly] by the water strider. I haven't found a good illustration of it; this is the best I've seen so far:

It was completely flat on the top; e.g., a very high stagnation point. It looks like it should have very good cross-wind performance.

  Reply With Quote
Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com