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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 04-01-2013, 09:01 PM   #11 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,951

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,764
Thanked 5,637 Times in 2,904 Posts
A few more pics to provide the illusion of progress on this project:



Above: ghetto frame mostly completed. In this pic it's very firmly strapped to the car. Five... count 'em! 5 ratchet straps, 2 bungee cords (to be replaced by straps). Still some triangulation to be done.

I've extended a very light 1x1 frame out from the main frame to act as a skeleton. This one won't be a stressed skin structure like the Firefly tail.



Woo.



Starting on the "hip bustles".

Attached Thumbnails
Click image for larger version

Name:	tail-frame.jpg
Views:	1005
Size:	72.0 KB
ID:	12850   Click image for larger version

Name:	unfinished-tail-outside.jpg
Views:	1010
Size:	52.3 KB
ID:	12851   Click image for larger version

Name:	bustle-construction.jpg
Views:	1001
Size:	37.8 KB
ID:	12852  
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
The Following 7 Users Say Thank You to MetroMPG For This Useful Post:
aerohead (04-03-2013), BamZipPow (04-02-2013), Cd (04-04-2013), Fat Charlie (04-03-2013), HyperMileQC (04-01-2013), Jyden (04-04-2013), sheepdog 44 (04-01-2013)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-01-2013, 10:31 PM   #12 (permalink)
.
 
Join Date: Dec 2011
Location: The Berkshires, Massachussetts
Posts: 881

Ruby Sparks - '01 Honda Insight
Team Honda
90 day: 64.27 mpg (US)
Thanks: 110
Thanked 355 Times in 199 Posts
How long is it?
__________________
I try to be helpful. I'm not an expert.
  Reply With Quote
Old 04-01-2013, 11:03 PM   #13 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,951

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,764
Thanked 5,637 Times in 2,904 Posts
I think it sticks out from the rearmost part of the bumper about 36 inches... I'll double-check tomorrow.

EDIT: nope, it's 31 inches.
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
Old 04-02-2013, 09:19 PM   #14 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,951

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,764
Thanked 5,637 Times in 2,904 Posts
working on the left hip

Correction, Sheepdog: it's 31 inches from the end of the bumper. 7 inches shorter than 3-wheeler's permanent tail.

I hope nobody's copying me, because I'm completely winging this one. We won't know how good my "aero eye" is until it's tuft tested & ABA'd.

Insert tab "A" into slot "B"...

Attached Thumbnails
Click image for larger version

Name:	side-bustle-bulkheads.jpg
Views:	987
Size:	33.2 KB
ID:	12858  
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
The Following 4 Users Say Thank You to MetroMPG For This Useful Post:
aerohead (04-03-2013), BamZipPow (04-02-2013), Flakbadger (04-02-2013), jime57 (06-01-2013)
Old 04-03-2013, 06:06 AM   #15 (permalink)
Coasting Down the Peak
 
skyl4rk's Avatar
 
Join Date: Jun 2008
Location: M I C H I G A N
Posts: 514

Toyauto Pickup - '94 Toyota Pickup 2WD
90 day: 36.32 mpg (US)

Versa Base - '09 Versa Sedan 1.6 Base
Team Nissan
90 day: 41.69 mpg (US)
Thanks: 27
Thanked 41 Times in 34 Posts
Quote:
Originally Posted by MetroMPG View Post
But since I only ever drive this car on the open road, it drives me nuts to be wasting all those extra millilitres of fuel because it doesn't have a boat tail.

I literally think about it ... Every. Time. I. Drive.
*checks for tail*

I, too, am troubled by my lack of a tail.

I know I am buffeting my way through the atmosphere when I could be slicing through it. I could be saving at least 10% in fuel with a proper trailing edge. I could be passing through the dense fog with far less disturbance to the universe, yet still get where I am going quickly.

I may join thee in this quest for a proper termination of the vehicle body.
__________________
Nissan Versa Aeromods
  Reply With Quote
Old 04-03-2013, 09:19 PM   #16 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,951

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,764
Thanked 5,637 Times in 2,904 Posts
Worked on the "hip/bustle" structure on the right side tonight. No pics (mirror image the pic from yesterday if you're having trouble visualizing it).

Ready to start putting the cardboard skin on it next.

Then... tuft testing! We'll see if it needs any tweaking before encapsulating it all in plastic.
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
The Following User Says Thank You to MetroMPG For This Useful Post:
aerohead (04-06-2013)
Old 04-03-2013, 09:20 PM   #17 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,951

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,764
Thanked 5,637 Times in 2,904 Posts
Quote:
Originally Posted by skyl4rk View Post
I may join thee in this quest for a proper termination of the vehicle body.
Please do!

But... didn't you have a tail already?
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
Old 04-07-2013, 08:35 PM   #18 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 20,951

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

MPGiata - '90 Mazda Miata
Last 3: 51.27 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 73.57 mpg (US)
Thanks: 2,764
Thanked 5,637 Times in 2,904 Posts
hips done





Main difference between the Firefly's tail and this one: hot glue gun! Highly recommended for CAD construction.

Both sides are done now. Top skin is next.
Attached Thumbnails
Click image for larger version

Name:	side-bustle-top-skin.jpg
Views:	941
Size:	54.0 KB
ID:	12874   Click image for larger version

Name:	side-bustle-full-skin.jpg
Views:	955
Size:	40.3 KB
ID:	12875  
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



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
The Following 6 Users Say Thank You to MetroMPG For This Useful Post:
AndrzejM (04-08-2013), BamZipPow (04-09-2013), blownb310 (05-09-2013), California98Civic (04-07-2013), ECONORAM (05-02-2013), HyperMileQC (04-10-2013)
Old 04-07-2013, 09:01 PM   #19 (permalink)
Master EcoModder
 
HydroJim's Avatar
 
Join Date: Jun 2011
Location: Alabama
Posts: 624

Aerofocus (retired) - '00 Ford Focus ZX3
90 day: 44.66 mpg (US)

The Red Baron - '93 Geo Metro
90 day: 44.1 mpg (US)
Thanks: 40
Thanked 153 Times in 102 Posts
looking good! I'll be interested to see the results of the tuft testing
__________________
Graduate Aerospace Engineering student at The University of Alabama in Huntsville. I drive a 1993 2-door 3/5 Geo Metro XFi and a 2014 Mitsubishi Mirage DE hatchback.
  Reply With Quote
Old 04-07-2013, 10:17 PM   #20 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 7,623

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 35.35 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 37.81 mpg (US)
Thanks: 4,804
Thanked 1,443 Times in 1,092 Posts
Metro, that is one of the best-looking prototypes that I have seen on this site! Is there any way that you could replace duct\100 MPH\hurricane tape with paper packaging tape? Are you planning on waterproofing that, or would you wait for the next version?

  Reply With Quote
Reply  Post New Thread


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