Go Back   EcoModder Forum > EcoModding > DIY / How-to
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 06-26-2008, 02:59 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: Glassboro, NJ
Posts: 88

Kawi - '04 Kawasaki Vulcan 800 Classic
90 day: 56.48 mpg (US)

The Monte - '99 Chevrolet Monte Carlo Z34
90 day: 26.52 mpg (US)

Mazda - '10 Mazda 3i
90 day: 35.15 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
air dam material

I have heard people saying that they used sheet metal to make their air dams, but has anyone tried aluminum flashing? Just wondering how well it works compared to sheet metal.

__________________
Goal one= 30mpg on The Monte by changing the nut that connects the steering wheel to the seat.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 06-26-2008, 09:02 PM   #2 (permalink)
Hi-Tech Redneck
 
Johnny Mullet's Avatar
 
Join Date: May 2008
Location: Ashtabula, Ohio
Posts: 1,436
Thanks: 6
Thanked 42 Times in 35 Posts
Send a message via AIM to Johnny Mullet Send a message via MSN to Johnny Mullet
If you hit an incline or something and bottom out, the steel will bend back into place. Aluminum does not, it will break.
__________________

GeoMetroforum.com - got mpg?
  Reply With Quote
Old 06-26-2008, 11:42 PM   #3 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Motor City
Posts: 89
Thanks: 0
Thanked 1 Time in 1 Post
Black coroplast. It bends right back even after a good whack. Some people use lawn edging, it's forgiving to a smack, too.
  Reply With Quote
Old 06-27-2008, 07:45 AM   #4 (permalink)
Master EcoModder
 
tasdrouille's Avatar
 
Join Date: Jan 2008
Location: Mirabel, QC
Posts: 1,672

The Guzzler - '08 Hyundai Elantra GL
90 day: 33.12 mpg (US)

Got Soul? - '11 Kia Soul 2U
Thanks: 35
Thanked 80 Times in 52 Posts
I used coroplast for the airdam on the TDI. I installed it in march and it's holding better than I thought it would. It almost looks as good as new. I scraped it down a couple times, but it flexes nicely and comes right back in place. I can not think of an other material that could have done a better job honestly. Also, if you have a longitudinal bend in your dam, the coroplast will resist real good to transverse forces, it won't bend under the car at speed.
__________________



www.HyperKilometreur.com - Quand chaque goutte compte...
  Reply With Quote
Old 06-27-2008, 07:48 AM   #5 (permalink)
EcoModding Lurker
 
Join Date: Jun 2008
Location: Glassboro, NJ
Posts: 88

Kawi - '04 Kawasaki Vulcan 800 Classic
90 day: 56.48 mpg (US)

The Monte - '99 Chevrolet Monte Carlo Z34
90 day: 26.52 mpg (US)

Mazda - '10 Mazda 3i
90 day: 35.15 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Where could I get black coroplast or should I just use lawn edging? And it doesn't bend at high speeds? What did you attach it with, just sheet metal screws? How well does it hold paint?
__________________
Goal one= 30mpg on The Monte by changing the nut that connects the steering wheel to the seat.

  Reply With Quote
Old 06-27-2008, 10:07 AM   #6 (permalink)
EcoModding Lurker
 
Join Date: May 2008
Location: Motor City
Posts: 89
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by saunders1313 View Post
Where could I get black coroplast or should I just use lawn edging? And it doesn't bend at high speeds? What did you attach it with, just sheet metal screws? How well does it hold paint?
I bought a roll of lawn edging but, imho, it was too floppy and easily bent to stand up to an oncoming 60 mph wind. I could picture it folding back flat.

Coroplast is pretty stiff and can hang in there against the wind, not to mention against the occasional curb or steep driveway entrance (I should know!).

I installed mine by first folding it over the edge of some 1" X 1" aluminum angle. I'll have to post some drawings of how I did that, it seems to be working out well. The 'plast is pop-riveted to one of the angle legs, wrapped around the angle to the other leg, and then #10 X 1" sheet metal screwed to the underside of the car.

From the front to back, we have coroplast (with pop rivet "good sides") facing out, then one leg of the aluminum angle (with the pop rivet "ugly sides") facing the back.

From bottom to top we have the other angle leg (with the screw heads), the layer of folded-over 'plast, then the underside of the car (penetrated by the screws). Held this way, the 'plast is backed up by the angle pretty well against oncoming wind and obstacles.

Edit to add: I got my coroplast at a local sign shop. It was a special order 6' by 2' black piece, cost me $12. It's easy to trim with a knife or scissors but gluing it may be a challenge.
  Reply With Quote
Old 06-27-2008, 10:12 AM   #7 (permalink)
Master EcoModder
 
tasdrouille's Avatar
 
Join Date: Jan 2008
Location: Mirabel, QC
Posts: 1,672

The Guzzler - '08 Hyundai Elantra GL
90 day: 33.12 mpg (US)

Got Soul? - '11 Kia Soul 2U
Thanks: 35
Thanked 80 Times in 52 Posts
Have a look at my TDI in the garage entry, you'll see the airdam. I just screwed it in the lip under my bumper with 7 screws. I actually got white coroplast covered with black vinyl which was leftover from a sign shop job.
__________________



www.HyperKilometreur.com - Quand chaque goutte compte...
  Reply With Quote
Old 06-27-2008, 12:26 PM   #8 (permalink)
extramiler
 
12voltsolar's Avatar
 
Join Date: Jun 2008
Location: Maine
Posts: 20

A4 - '01 Audi A4 Avant sport
90 day: 32.42 mpg (US)
Thanks: 0
Thanked 0 Times in 0 Posts
Has anyone tried Kydex (thermoplastic) for an air dam?
  Reply With Quote
Old 06-27-2008, 12:31 PM   #9 (permalink)
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Albany, ny
Posts: 248

NewBlue - '07 Honda Civic EX
90 day: 38.13 mpg (US)

The Better Half - '97 Ford Ranger XLT
90 day: 25.84 mpg (US)
Thanks: 0
Thanked 5 Times in 5 Posts
I haven't yet but I'm trying to get my hands on some, I love the stuff, easy to form with heat, EXTREMELY rugged and looks pretty good to boot. If you know of a good place to get it for a reasonable price i'd be interested to hear as I am not sure if my source will come through or not.
__________________
2007 Honda Civic Ex
Second Goal = 50mpg
First goal = 40mpg Goal Achieved 3 tank average over 40mpg
Starting point 30mpg ready...... GO.

  Reply With Quote
Old 06-27-2008, 12:32 PM   #10 (permalink)
Master EcoModder
 
wagonman76's Avatar
 
Join Date: Jun 2008
Location: Northwest Lower Michigan
Posts: 1,006

Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
Thanks: 8
Thanked 16 Times in 15 Posts
I did mine out of aluminum siding because it was free. True, if you kink it to a sharp bend, itll break sooner than steel. But I had no problems with it breaking as I was forming it. I even folded the ends back and relocated the bends a couple times on the drivers side. Also if you bottom it out, itll most likely fold over gradually and you can pull it back. You wont actually land the entire front end of the car flat on the road. Also a plus is that it is more malleable than steel, so at the absolute worst if I lose it somehow, itll deform rather than poke a hole through my steel gas tank or oil pan or other things. I dont see that ever happening though, it is on there better than the airdam on my 6000 wagon and that one is still there. Really it is quite rigid though with a longtudinal bend at top and bottom.

__________________

Winter daily driver, parked most days right now


Summer daily driver
  Reply With Quote
Reply  Post New Thread


Tags
air, dam, flashing, metal, sheet

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Comparing Warm Air Intakes (WAI) & Cold Air Intakes (CAI) toomuch EcoModding Central 23 05-26-2019 05:41 AM
Honda IACV explained TomO Off-Topic Tech 16 12-21-2015 01:49 AM
Effects Of Air Dam (Ford F350 pickup) Big Dave Aerodynamics 59 05-06-2012 01:32 PM
2007 Focus Front Air Dam garys_1k Aerodynamics 23 12-28-2011 02:22 PM
Air Dam and Tray (2005 Civic Sedan) Harpo Aerodynamics 14 10-27-2008 12:56 PM



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