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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-05-2014, 05:01 PM   #1 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,530

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

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

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

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,978 Times in 3,613 Posts
Taking stock: condition of the permanent aeromods on the Metro/Firefly, years later

I've been giving the old Flea a good clean-up and general going-over, which involves removing some of its "permanent" aero modifications.

I'll be honest: most of them have not stood the test of time.

Photos tell the sad story. I'll start with the good...

1) My home-made grille-block/bra



Originally made in 2007.

See a pic of it new: http://ecomodder.com/forum/showthrea...k-bra-285.html

It's made out of vinyl material. Aside from being dirty and a little faded (and with duct tape residue for added effect), this has actually held up decently.


2) Smooth wheel covers



Originally made: 2007

See what they looked like new - project thread: http://ecomodder.com/forum/showthrea...smooth-81.html

These were made by glueing (is that a word? Looks funny) plastic shapes over the holes in the factory wheelcovers. They worked for a couple of years before the plastic shapes started curving up at the edges ... and some fell off and drifted away like autumn leaves. Each wheelcover has lost at least one shape.

This week I yanked them all off and cleaned off the adhesive. I'm probably going to go the pizza pan route, screwing them on to another set of wheelcovers I have. I'll re-paint the original wheelcovers to preserve the car's collector value.


3) Sealing around the headlight assemblies



Originally made: 2008

See what they looked like new - project thread: http://ecomodder.com/forum/showthrea...-gap-4736.html

Utter failure on this one. See the little bit of weatherstripping under the right side of the turn signal? That's all that's left of it.

I never took my own advice in my build thread and ran a bead of black silicone over top to seal my weatherstripping from the weather. The problem? The adhesive completely let go after a while and the weatherstripping got pushed through the gap (hot sun on black paint probably turned the glue to slippery goo).


4) Rear wheel/fender skirts ...



Originally made: 2007

See what they looked like new - project thread: http://ecomodder.com/forum/showthrea...metro-103.html

These have actually held up quite well. Originally they got "flappy" in hot weather due to the plastic being too thin, so I reinforced them with a backing of coroplast attached with contact cement.

But then something else happened in the last two years: they seem to have expanded a little between the attachment brackets/screws, and have bulged out. I don't know why. It's fixable though.

Originally I tried velcro as an attachment method, but it was too hard to remove the skirts. So I made custom attachment brackets:



These "pinch" the 90 degree bend in the wheel arch lip, because I didn't want to drill the metal and give rust a toe-hold. I just removed them for the first time since '07, and they have held up reasonably well, with some corrosion because I used 3 dissimilar metals: copper, stainless & steel! The good news is there was ZERO rust on the wheel arch where I had them attached.

The screws holding the skirts to the brackets rusted too, but they were just painted steel. I should find some stainless ones that fit when I put these back on.

Overall, reasonably happy with the durability of the wheel skirts.


5) Fiberglass Kammback ...





Originally built: 2008

Project thread (best photos around post#95, #127, #163): http://ecomodder.com/forum/showthrea...sion-3518.html

This is probably my biggest disappointment because of how much freakin' work I put into making this look as professional as possible when it was new:



Now it's failing structurally (sagging on the trailing edge) and cosmetically (finish is peeling and the whole thing has generally gone lumpy).

But I'm a big boy and in retrospect can accept that I used dumb construction techniques: not enough glass to make it strong; trying to encapsulate the cardboard form originally (since stripped out) was silly.

Cosmetically, I obviously did a poor job prepping the various layers of filler/paint, which is why they've started peeling.

Yes, it's fixable, but it'll never be as pretty as it once was. I'm more tempted to get a used hatchback and make something I can rivet/weld right onto the structure that can also act as a strong attachment point for a removable boat tail.

---

Main lesson learned: the mod that held up best was the grille block. I guess I should have made everything with a sewing machine and vinyl material.

At this point ALL my aero mods (except the passenger mirror delete) are off the car. I'm giving it a good cleaning and will be repairing/touching them up before they go back on.

This is humbling - it has given me an appreciation for the design & durability of the OEM bits and pieces on our vehicles that last its lifetime.

Attached Thumbnails
Click image for larger version

Name:	bra-500.jpg
Views:	394
Size:	29.1 KB
ID:	15148   Click image for larger version

Name:	wheel-covers.jpg
Views:	1245
Size:	19.2 KB
ID:	15149   Click image for larger version

Name:	sealing-headlight.jpg
Views:	421
Size:	37.3 KB
ID:	15152   Click image for larger version

Name:	wheel-skirts.jpg
Views:	338
Size:	51.1 KB
ID:	15155   Click image for larger version

Name:	kammback1-sm.jpg
Views:	337
Size:	21.4 KB
ID:	15156  

Click image for larger version

Name:	kammback2-sm.jpg
Views:	351
Size:	18.4 KB
ID:	15157  
__________________
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
The Following 11 Users Say Thank You to MetroMPG For This Useful Post:
2000mc (06-06-2014), aerohead (06-05-2014), BamZipPow (06-28-2014), California98Civic (06-06-2014), Cd (11-10-2014), darcane (06-05-2014), Frank Lee (06-05-2014), jedi_sol (06-05-2014), niky (06-06-2014), tvbd56 (06-05-2014), UltArc (06-06-2014)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-05-2014, 06:45 PM   #2 (permalink)
Master EcoModder
 
jedi_sol's Avatar
 
Join Date: Mar 2009
Location: Tustin, CA
Posts: 929

2013 STi *SOLD* - '13 Subaru Impreza WRX STi
Subaru
Sports Cars
Team Turbocharged!
90 day: 26.59 mpg (US)

1996 Geo Metro *RETIRED from Ecomodding* - '96 Geo Metro Base
90 day: 58.68 mpg (US)
Thanks: 368
Thanked 380 Times in 238 Posts
7 years is excellent!

My undertray fell apart after 3 months, I had to abandon it on the side of the highway.
__________________







See the rest of the Sti project log:
http://ecomodder.com/forum/showthrea...log-26612.html
  Reply With Quote
Old 06-05-2014, 08:00 PM   #3 (permalink)
Too busy for gas stations
 
Superfuelgero's Avatar
 
Join Date: May 2013
Location: The intersection of TN/MS/AL
Posts: 460

Turtle - '92 Honda Civic Vx
Team Honda
90 day: 67.09 mpg (US)

Rolla - '10 Toyota Corolla Le

Beast - '91 Chevy V2500

Bus - '01 VW Eurovan MV

Speed - '93 Harley bored and storked Harley w/ turbo/ nitrous
90 day: 53.09 mpg (US)

Cal - '68 Ford Mustang GT/CS
Thanks: 87
Thanked 176 Times in 114 Posts
3 of my wifes moon discs lasted a week. To be far she drove 4000 miles that week though.
__________________
Shooting for 600 miles of range at 65-70 mph out of a vx.

  Reply With Quote
Old 06-05-2014, 08:19 PM   #4 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 12,232

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

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.2 mpg (US)

Gramps - '04 Toyota Camry LE
90 day: 35.39 mpg (US)

Don't hit me bro - '05 Toyota Camry LE
90 day: 30.49 mpg (US)
Thanks: 7,254
Thanked 2,231 Times in 1,721 Posts
I slashed my marine plastic grill block within hours.

Then my car got car Chlamydia, apparently.

I really liked the way that you sealed your wheel covers. I wish that had worked out better.

I believe that the correct spelling is "gluing," although that also looks strange. Who knows with English, though. Whenever I go to m-w.com and try to use the thesaurus, it gives me my word as a synonym! You fail, synonymology! You had one job!
  Reply With Quote
Old 06-05-2014, 08:46 PM   #5 (permalink)
.........................
 
darcane's Avatar
 
Join Date: Aug 2009
Location: Buckley, WA
Posts: 1,597
Thanks: 391
Thanked 488 Times in 316 Posts
Quote:
Originally Posted by xntrx View Post
3 of my wifes moon discs lasted a week. To be far she drove 4000 miles that week though.
Real Moon-Eyes discs? Or a knock-off?

I'm at about 15,000 miles and counting on mine with no problem.
__________________
Past Cars:

2001 Civic HX Mods

CTS-V

2003 Silverado Mods
  Reply With Quote
Old 06-06-2014, 12:12 AM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,530

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

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

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

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,978 Times in 3,613 Posts
Added skirts & kammback

Those "moon" brand discs do look fantastic. I just can't justify the price... I'd apparently rather spend 20 hours messing around with failed DIY attempts.

Builds character?

---

I've updated post #1 with a look at the current state of my plastic rear wheel skirts and my once beautiful fiberglass Kammback.
__________________
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
Old 06-06-2014, 04:46 AM   #7 (permalink)
Cyborg ECU
 
California98Civic's Avatar
 
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,373
Thanked 2,172 Times in 1,469 Posts
Nice post. My airdam has repeatedly needed attention, as have the side skirts. In both cases, it is a consequence of less than ideal attachment methods. I also have gained greater respect for not only OEM design but for the craftsmanship of some of the projects we see on this site, done by people with years of experience and access to great tools and materials. Shows me the weight and importance of our industrial and craft history for contemporary culture--even though it goes under-appreciated.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



  Reply With Quote
The Following User Says Thank You to California98Civic For This Useful Post:
MetroMPG (06-06-2014)
Old 06-06-2014, 06:20 AM   #8 (permalink)
Master EcoModder
 
cowmeat's Avatar
 
Join Date: Jan 2014
Location: South Carolina
Posts: 1,659

Princess Carriage - '20 Ford Explorer Limited

Silver - '22 Ford Maverick Hybrid XLT w/tow pkg
Maverick Hybrids
90 day: 41.3 mpg (US)
Thanks: 128
Thanked 764 Times in 461 Posts
I know you guys probably thought I was crazy using roof flashing for my mods, but it's super-cheap, lightweight, easily cut and shapable, and my mods will more than likely outlive the car . . .
__________________

  Reply With Quote
Old 06-06-2014, 11:09 AM   #9 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

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
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,587 Times in 1,554 Posts
Too bad about the kamm. I remember how much time you put into it when you made it.
__________________
Current project: A better alternator delete
  Reply With Quote
Old 06-06-2014, 11:25 AM   #10 (permalink)
Master EcoModder
 
Join Date: Aug 2010
Location: Philippines
Posts: 2,173
Thanks: 1,739
Thanked 589 Times in 401 Posts


I was actually looking for something like this when I was making my temporary fender skirts... so I could affix temporary full length skirts without having to drill holes in someone else's car.

Bonus... looks ultra cheap to fabricate, too!

  Reply With Quote
Reply  Post New Thread






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