Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-01-2008, 10:31 PM   #11 (permalink)
Giant Moving Eco-Wall
 
DifferentPointofView's Avatar
 
Join Date: Dec 2007
Location: The Dale, IL (or A-Dale)
Posts: 1,120

The Jeep! - '95 Jeep Grand Cherokee ZJ Laredo
90 day: 23.75 mpg (US)

The Caliber - '07 Dodge Caliber R/T
90 day: 30.6 mpg (US)

The 'Scort - '98 Ford Escort LX
Thanks: 0
Thanked 7 Times in 6 Posts
I don't like the Tinting law in IL. I can't tint the windows I need most! the fronts!!!! I can tint the rears as dark as I want though, So when I do re-tint them (they're peeling and an awful blue color) I'm going midnight black. darker than 5% limo (2.5%VLT)

__________________


Yea.. I drive a Jeep and I'm on a fuel economy site, but you just wouldn't understand... "It's a Jeep thing!" *Jeep Wave*

Did I Use Too Many Abbreviations? Here's The Abbreviations List
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-03-2008, 10:49 PM   #12 (permalink)
EcoModding Lurker
 
Join Date: Feb 2008
Location: Virginia, USA
Posts: 80

beamer - '91 bmw 318is
90 day: 32 mpg (US)
Thanks: 0
Thanked 4 Times in 3 Posts
As a general rule, below 55mph open windows, 55+ A/c

However, at 55+ one can also crack the windows vs. opening them completely.
Still doesn't work but so good, once the temps hit 95+ I mean...
  Reply With Quote
Old 05-04-2008, 01:28 AM   #13 (permalink)
Giant Moving Eco-Wall
 
DifferentPointofView's Avatar
 
Join Date: Dec 2007
Location: The Dale, IL (or A-Dale)
Posts: 1,120

The Jeep! - '95 Jeep Grand Cherokee ZJ Laredo
90 day: 23.75 mpg (US)

The Caliber - '07 Dodge Caliber R/T
90 day: 30.6 mpg (US)

The 'Scort - '98 Ford Escort LX
Thanks: 0
Thanked 7 Times in 6 Posts
Quote:
As a general rule, below 55mph open windows, 55+ A/c
If your driving a car, but some cars with larger engines A/C is better than open windows, because the A/C doesn't hit as bad as the drag coefficient hit from open windows.

Trucks, vans and SUV's take the hit real bad from open windows at 55, even at 40. I usually close the windows after I hit 35 and turn on the fan (no A/C). Even from winds blowing the vehicle backwards makes it harder to keep speed, making your vehicle a giant parachute isn't any better.
__________________


Yea.. I drive a Jeep and I'm on a fuel economy site, but you just wouldn't understand... "It's a Jeep thing!" *Jeep Wave*

Did I Use Too Many Abbreviations? Here's The Abbreviations List
  Reply With Quote
Old 05-04-2008, 10:01 AM   #14 (permalink)
ECO-Evolution
 
Lazarus's Avatar
 
Join Date: Nov 2007
Location: Central Texas
Posts: 1,482

Iron Horse (retired) - '97 Iron horse Intrepid

Ninja - '08 Kawasaki 250R
90 day: 76.23 mpg (US)
Thanks: 17
Thanked 44 Times in 33 Posts
Quote:
Originally Posted by DifferentPointofView View Post
If your driving a car, but some cars with larger engines A/C is better than open windows, because the A/C doesn't hit as bad as the drag coefficient hit from open windows.

Trucks, vans and SUV's take the hit real bad from open windows at 55, even at 40. I usually close the windows after I hit 35 and turn on the fan (no A/C). Even from winds blowing the vehicle backwards makes it harder to keep speed, making your vehicle a giant parachute isn't any better.
Do any of you have a source for this AC data or is just accepted practice?
__________________
"Judge a person by their questions rather than their answers."

  Reply With Quote
Old 05-05-2008, 12:38 AM   #15 (permalink)
Giant Moving Eco-Wall
 
DifferentPointofView's Avatar
 
Join Date: Dec 2007
Location: The Dale, IL (or A-Dale)
Posts: 1,120

The Jeep! - '95 Jeep Grand Cherokee ZJ Laredo
90 day: 23.75 mpg (US)

The Caliber - '07 Dodge Caliber R/T
90 day: 30.6 mpg (US)

The 'Scort - '98 Ford Escort LX
Thanks: 0
Thanked 7 Times in 6 Posts
Mostly practice, but I'll try and show you a source when I have time. Kinda checking in on things real fast right now
__________________


Yea.. I drive a Jeep and I'm on a fuel economy site, but you just wouldn't understand... "It's a Jeep thing!" *Jeep Wave*

Did I Use Too Many Abbreviations? Here's The Abbreviations List
  Reply With Quote
Old 05-05-2008, 11:30 AM   #16 (permalink)
Hypermiler
 
PaleMelanesian's Avatar
 
Join Date: Dec 2007
Location: Texas
Posts: 2,316

PaleCivic (retired) - '96 Honda Civic DX Sedan
90 day: 69.2 mpg (US)

PaleFit - '09 Honda Fit Sport
Team Honda
Wagons
90 day: 44.06 mpg (US)
Thanks: 606
Thanked 423 Times in 277 Posts
If you crack your window and also crack the right rear, you get a good amount of cross-flow. It gives you much more airflow than just cracking your one window.

Also, use a windshield reflector visor when you park - the car will start out much cooler.
__________________



11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles
  Reply With Quote
Old 05-05-2008, 11:06 PM   #17 (permalink)
Recycling Nazi
 
Bror Jace's Avatar
 
Join Date: May 2008
Location: People's Republic of Albany
Posts: 234

Blue Bullet - '06 Honda Civic Sedan LX
90 day: 35.68 mpg (US)
Thanks: 2
Thanked 7 Times in 7 Posts
Lightbulb

When I had my '95 Civic 5spd, I took it from Albany to West Point on the NY State Thruway to play paintball. On the return trip, it got quite warm so I intermittently used the A/C ... but only when going downhill ... and downhill stretches could be quite long ... lasting a minute or two.

When climbing hills, I turned it back off. With that 1.5L, you could feel the compressor kick in and out ... an obvious difference.
__________________
--- Bror Jace
  Reply With Quote
Old 05-06-2008, 11:06 AM   #18 (permalink)
Ex-lurker
 
i_am_socket's Avatar
 
Join Date: Apr 2008
Location: Jersey
Posts: 571

Skeeter - '05 Toyota Corolla LE
90 day: 35.55 mpg (US)
Thanks: 2
Thanked 8 Times in 6 Posts
They did a segment on Mythbusters about the window vs A/C thing and came to the same conclusing with windows are better < 45 and A/C is better > 45. I currently do the front passenger & left rear crossflow, but the temps are rising... going to have to get that windshield screen.
__________________
  Reply With Quote
Old 05-08-2008, 01:18 PM   #19 (permalink)
Veggiedynamics
 
Join Date: May 2008
Location: Alexandria, MN
Posts: 684

Volt12 - '12 Chevy Volt base
Thanks: 0
Thanked 12 Times in 10 Posts
any one know about moon roofs or sunroofs.. being more efficient than say window use?

I have a moonroof in my benz and its adds a nice breeze but not overly windy like a windows open does.. seems very efficient... it has one of those 1" deflectors in the front that pops up when it opens to deflect the air over the opening in the roof to case a draft out instead of a draft in like a windows does...

__________________

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Video: Fuel Economy Decrease with Opened Windows Peakster Aerodynamics 21 04-30-2008 01:13 AM
It's not just the A/C tasdrouille General Efficiency Discussion 4 04-18-2008 12:57 AM
When does having your windows down start to effect your mileage? Chris D. Aerodynamics 9 03-11-2008 01:15 AM
Windows down on VW Golf = 2.5% FE reduction MetroMPG Aerodynamics 2 11-28-2007 09:43 AM
Found a coastdown hill! Mini comparo: windows vs skirts vs hatchback MetroMPG Aerodynamics 4 11-28-2007 12:40 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com