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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-04-2014, 10:22 PM   #11 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
Thanks for posting the testing results. 2% seems small, but I'll take it.

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-05-2014, 06:32 PM   #12 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,808
Thanks: 23,879
Thanked 7,184 Times in 4,624 Posts
2.25%

If you were seeing 2.25 at 55 mph,then you'd be looking at about a 4.5% drag reduction to explain it.Since it's doing it at 50-mph,then the reduction is even greater,so,shooting from the hip,and considering a generic 12% drag cooling system, it looks like you've cut the cooling drag maybe by half.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following 2 Users Say Thank You to aerohead For This Useful Post:
mikeyjd (03-05-2014), sarguy01 (03-06-2014)
Old 03-05-2014, 10:03 PM   #13 (permalink)
Master EcoModder
 
mikeyjd's Avatar
 
Join Date: Mar 2013
Location: Grand Rapids, MI
Posts: 838

Matchbox - '93 Ford Festiva L
Team Ford
Last 3: 70.16 mpg (US)

Salamander - '99 Chrysler Concorde LXI
Team Dodge
90 day: 30.3 mpg (US)

Urquhart - '97 Toyota Tacoma 4x4 V6 3.4L DLX
Pickups
90 day: 25.81 mpg (US)

Smudge - '98 Toyota Tacoma
90 day: 40.65 mpg (US)

Calebro - '15 Renault Trafic 1.25 dci
90 day: 39.39 mpg (US)
Thanks: 1,380
Thanked 209 Times in 155 Posts
I'd do a full upper then cut into the lower as needed for cooling purposes.
  Reply With Quote
Old 03-05-2014, 11:35 PM   #14 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: USA
Posts: 2,643
Thanks: 1,502
Thanked 279 Times in 229 Posts
I notice the biggest improvement in my honda was from 50-70 mph acceleration for merging into traffic. Acceleration was much quicker and it didnt hurt my mpg as much. Of course if your temp starts to go a little high you can always turn on the heater. I also added a bottle of water wetter and used a turkey baster to put the fluid from the rad into the over flow bottle to make room for the additive.
  Reply With Quote
The Following 2 Users Say Thank You to Cobb For This Useful Post:
mikeyjd (03-06-2014), sarguy01 (03-06-2014)
Old 03-06-2014, 08:33 AM   #15 (permalink)
Master EcoModder
 
sarguy01's Avatar
 
Join Date: Jan 2010
Location: Virginia Beach
Posts: 468

Mazda5 - '12 Mazda 5
90 day: 25.22 mpg (US)

Big D - '11 Dodge Durango Crew
90 day: 18.75 mpg (US)
Thanks: 86
Thanked 87 Times in 54 Posts
Quote:
Originally Posted by mikeyjd View Post
I'd do a full upper then cut into the lower as needed for cooling purposes.
Full upper is on the list. I don't think it will take long to do. In fact, the ABA testing took longer to do on the lower block than did installing it!
  Reply With Quote
Old 03-06-2014, 08:47 AM   #16 (permalink)
Master EcoModder
 
sarguy01's Avatar
 
Join Date: Jan 2010
Location: Virginia Beach
Posts: 468

Mazda5 - '12 Mazda 5
90 day: 25.22 mpg (US)

Big D - '11 Dodge Durango Crew
90 day: 18.75 mpg (US)
Thanks: 86
Thanked 87 Times in 54 Posts
Quote:
Originally Posted by Cobb View Post
I notice the biggest improvement in my honda was from 50-70 mph acceleration for merging into traffic. Acceleration was much quicker and it didnt hurt my mpg as much. Of course if your temp starts to go a little high you can always turn on the heater. I also added a bottle of water wetter and used a turkey baster to put the fluid from the rad into the over flow bottle to make room for the additive.
I have the timing belt coming up in the next few months. I am going to change the coolant at the same time, so I will be sure to add some water wetter. Good idea.
  Reply With Quote
Old 03-06-2014, 08:48 AM   #17 (permalink)
Master EcoModder
 
sarguy01's Avatar
 
Join Date: Jan 2010
Location: Virginia Beach
Posts: 468

Mazda5 - '12 Mazda 5
90 day: 25.22 mpg (US)

Big D - '11 Dodge Durango Crew
90 day: 18.75 mpg (US)
Thanks: 86
Thanked 87 Times in 54 Posts
Quote:
Originally Posted by aerohead View Post
If you were seeing 2.25 at 55 mph,then you'd be looking at about a 4.5% drag reduction to explain it.Since it's doing it at 50-mph,then the reduction is even greater,so,shooting from the hip,and considering a generic 12% drag cooling system, it looks like you've cut the cooling drag maybe by half.
So, I should be able to cut coolant drag even more by blocking the upper grill too??
  Reply With Quote
Old 03-06-2014, 09:03 AM   #18 (permalink)
Master EcoModder
 
mikeyjd's Avatar
 
Join Date: Mar 2013
Location: Grand Rapids, MI
Posts: 838

Matchbox - '93 Ford Festiva L
Team Ford
Last 3: 70.16 mpg (US)

Salamander - '99 Chrysler Concorde LXI
Team Dodge
90 day: 30.3 mpg (US)

Urquhart - '97 Toyota Tacoma 4x4 V6 3.4L DLX
Pickups
90 day: 25.81 mpg (US)

Smudge - '98 Toyota Tacoma
90 day: 40.65 mpg (US)

Calebro - '15 Renault Trafic 1.25 dci
90 day: 39.39 mpg (US)
Thanks: 1,380
Thanked 209 Times in 155 Posts
Quote:
Originally Posted by sarguy01 View Post
So, I should be able to cut coolant drag even more by blocking the upper grill too??
I believe so.
  Reply With Quote
Old 03-06-2014, 06:08 PM   #19 (permalink)
Master EcoModder
 
Join Date: May 2012
Location: USA
Posts: 2,643
Thanks: 1,502
Thanked 279 Times in 229 Posts
I block all but a 2x2 inch square in the summer. I also run the ac which in turn runs the fan on low, so it hovers around 186 degrees all summer long.

When its below 85 degrees out I run a full block year round. Best I can say is get s sg2 or some odb2 reader to watch your water temp and test it.

When this frozen stuff is over Im going to remake a lower air dam out of edging or gutter down spout like I had last year.
  Reply With Quote
The Following User Says Thank You to Cobb For This Useful Post:
sarguy01 (03-08-2014)
Old 03-08-2014, 01:13 PM   #20 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,808
Thanks: 23,879
Thanked 7,184 Times in 4,624 Posts
even more

Quote:
Originally Posted by sarguy01 View Post
So, I should be able to cut coolant drag even more by blocking the upper grill too??
Hucho says we can get the 12% down to only 2% although it requires elaborate inlet and outlet ducting,the latter being a challenge for production cars which aren't configured for the space necessary for the ducting.
Here is a link to a low drag cooling system by Walter Korff of Lockheed,designer of the 409-mph 'Goldenrod' streamliner.
Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - aerohead's Album: Book illustrations - Picture

__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following 3 Users Say Thank You to aerohead For This Useful Post:
Flakbadger (03-11-2014), sarguy01 (03-08-2014), yoyoyoda (03-09-2014)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com