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

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 05-02-2008, 11:29 PM   #191 (permalink)
LostCause's Avatar
Join Date: Feb 2008
Location: California
Posts: 504

Thunderbird - '96 Ford Thunderbird
90 day: 27.75 mpg (US)
Thanks: 0
Thanked 7 Times in 7 Posts
That is amazing.

Everyone that joins the forum should get a packet outlining the mods to your car. Want to raise your mileage? Be like AndrewJ...

Originally Posted by Funny View Post
You car is starting to look like it's from Back to the Future .
No kidding. I wouldn't be surprised to find a Mr. Fusion popping up on his dash shortly...

- LostCause

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 05-06-2008, 07:35 PM   #192 (permalink)
EcoModding Lurker
Join Date: May 2008
Location: USA
Posts: 56
Thanks: 0
Thanked 3 Times in 3 Posts
I love your ingenuity! What you are doing if very inspiring. I plan to mod my next car with some of the same ideas and a few of my own. I'll have to take pics of my progress like you've done. So much to do now...
  Reply With Quote
Old 05-07-2008, 08:43 PM   #193 (permalink)
EcoModding Enthusiast
Join Date: May 2008
Location: Austin
Posts: 155

Silver Bullet - '03 Mazda Protege LX
90 day: 29.51 mpg (US)

Silver Bullet - '03 Mazda Protege LX
90 day: 37.06 mpg (US)

Blaze - '17 Ford Escape
Thanks: 23
Thanked 2 Times in 2 Posts
dude, that is so awesome!!! I gotta say, that I love the attention ecomodder pays to aerodynamics. Congratulations on the latest mileage and the car is looking awesome!
  Reply With Quote
Old 05-08-2008, 09:35 AM   #194 (permalink)
Ultimate Fail
Cd's Avatar
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,559
Thanks: 2,849
Thanked 1,111 Times in 673 Posts
Originally Posted by AndrewJ View Post
I'm literally about to dash out the door to go to the MPG rally, but I just filled up the tank and got....

68.52 mpg!!!

Holy crap!
Can you remind us of your MPG rating before you started to do the aerodynamic modifications ?

Also, how many miles per gallon would a person get if they had a car identical to yours ( with just the aero mods ) but drove " normally " ( meaning driving at least 70 MPH with no "cheating" such as engine off coasting ... etc.

For example, let say driving on the highway at 70 MPH ( but with the with the A/C off . )

How many miles per gallon did you gain from using the alternator kill switch ?

I could go back and find all of this info. in the prior posts, but I thought it might be helpful tio have it all in one reply for any new viewers that skip to the end.

Thanks for the inspiration Andrew !
  Reply With Quote
Old 05-10-2008, 08:50 AM   #195 (permalink)
EcoModding Lurker
Join Date: May 2008
Location: Canada
Posts: 25

Fortuga - '03 Subaru Forester X
90 day: 21.68 mpg (US)

The Beater - '94 Nissan Sentra EX
90 day: 28.88 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Originally Posted by .Cd View Post
I've begun looking for a small / cheap web cam that I can mount to the outside of the car. ( for tuft testing )
Check this out: http://www.4kam.com/

And this is How I came across that camera, Sven is a pretty cool guy: Sven's Video Page, which includes a description of his current setup

I hope that helps someone. It doesn't seem to be expensive to me. The setup seems pretty well priced as far as bang for your buck. If it is too much for anyone individually I'm sure there are enough of you guys around here that can buy it as a group and share.

I also found a camera system that is good enough for a proper mirror delete. I'll post about it in a more relevant thread (done, you can find it here). The only possible drawbacks are: price, weight and power consumption for you non-alternator fiends. Since I feel that I am not qualified it will be up to you to decide if the benefits outweigh the drawbacks.

BTW, I am new here and this is my first post so...Hello world...of Ecomodder.

Last edited by JV-Tuga; 05-11-2008 at 06:57 PM.. Reason: Info Update
  Reply With Quote
Old 05-13-2008, 12:05 AM   #196 (permalink)
Awesomeness personified
AndrewJ's Avatar
Join Date: Dec 2007
Location: Columbia, MO
Posts: 642

Harold - '94 Honda Civic CX
90 day: 54.51 mpg (US)

Margot - '08 Surly Big Dummy
Thanks: 0
Thanked 28 Times in 18 Posts
Send a message via AIM to AndrewJ
Re-done grille opening.

So I re-did the grille opening today.

It was already "appropriately" sized according to the NASCAR rule of 4 square inches of grille opening per 25 horsepower.
My old grille opening was 12 square inches, and it was plenty, as long as I wasn't running beltless.

The main problem was that the radiator fan would still kick on a bit, consuming a bit of battery power every time it did so. So for running a beltless alternator, more grille opening (to reduce or eliminate running of the radiator fan) is desirable.

I increased the opening to about 4" by 4" or 16 square inches.

I also replaced the manual choke cable with some 1.5mm steel cable inside bicycle cable housing. The manual choke cable was just too stiff to make the several bends on the way from the dashboard to the airdam. (it was after all one solid strand of wire)

And here's the guts of the new grille opening, it slides horizontally in two rails, and there's a spring to help it return to the fully closed position.

And I had to replace my killswitch, I've apparently been using it a bit too much as it wore out and became very hard to switch. So a new one was in order.

I was pretty proud of myself for wearing it out

"I got 350 heads on a 305 engine. I get 10 miles to the gallon. I ain't got no good intentions." - The Drive By Truckers.

Last edited by AndrewJ; 05-13-2008 at 12:13 AM..
  Reply With Quote
The Following User Says Thank You to AndrewJ For This Useful Post:
CigaR007 (07-21-2011)
Old 05-13-2008, 08:34 AM   #197 (permalink)
Daox's Avatar
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,184

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
90 day: 56.69 mpg (US)
Thanks: 2,486
Thanked 2,555 Times in 1,538 Posts
Looking good Andrew!

How often do you find yourself altering your blocks position?
Current project: A better alternator delete
  Reply With Quote
Old 05-13-2008, 08:51 AM   #198 (permalink)
Batman Junior
MetroMPG's Avatar
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,461

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

MPGiata - '90 Mazda Miata
90 day: 55.97 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: 67.41 mpg (US)
Thanks: 4,000
Thanked 6,893 Times in 3,577 Posts
Nice to see the car getting more refined.
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

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
Old 05-13-2008, 09:33 AM   #199 (permalink)
Did you get that thing?
reformed's Avatar
Join Date: Jan 2008
Location: Buffalo NY
Posts: 162

Green Machine - '92 Honda Civic LX
90 day: 39.98 mpg (US)

Money pit - '97 Infiniti j30
90 day: 22.74 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
I see a small fault with the NASCAR logic, in my eyes at least. Maybe you can show me I'm wrong here as I didn't look this up, but I'm assuming that the NASCAR rule for 4 square inches per 25 hp is probably taking into consideration that their average rate of speed is much greater than yours, so they squeeze in more air per those square inches than you do. Then again they are making upwards of 800hp IIRC, and you're making 100hp give or take, so this may be a null point.
  Reply With Quote
Old 05-13-2008, 11:33 AM   #200 (permalink)
Master EcoModder
Join Date: Mar 2008
Location: USA
Posts: 566
Thanks: 1
Thanked 71 Times in 57 Posts
I dunno about the NASCAR 4 square inch rule, but NACA did considerable cooling duct work in the 1940s, indicating that diffuser inlet ducts are essential, as well as proper outlet ducts that smoothly rejoin the cooling air with the slipstream.

Probably, a round or elliptical inlet at the stagnation point, with radiused edge and diffuser duct that grows in diameter to 2 or 3 times the inlet size, coupled with a constricting outlet duct that rejoins the slipstream in almost parallel flow, would be best.

  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