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Search: Posts Made By: hat4rvn
Forum: EcoModding Central 09-29-2014, 08:18 PM
Replies: 47
Views: 56,686
Posted By MetroMPG
pics of some of the mods

http://ecomodder.com/forum/attachment.php?attachmentid=15956&stc=1&d=1412037852

Above: Air dam, stock (left), ecomodded (right). It's my first classic lawn edging air dam! It scrapes now and...
Forum: EcoModding Central 09-29-2014, 08:17 PM
Replies: 47
Views: 56,686
Posted By MetroMPG
15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed

Some of you may have seen the thread where I was hunting for a winter car (http://ecomodder.com/forum/showthread.php/project-save-flea-winter-beater-search-winner-2007-a-29429.html) to give the...
Forum: Aerodynamics 08-08-2011, 04:47 PM
Replies: 59
Views: 109,192
Posted By kach22i
I sent a PM to him, maybe we will get some...

I sent a PM to him, maybe we will get some photos.

See the link in my signature on building your own chin spoiler. It is good for an extra 3-mpg on the highway.

I have plans on lowering it...
Forum: Aerodynamics 10-06-2010, 06:19 PM
Replies: 59
Views: 109,192
Posted By Big Dave
Aerohead is probably right. Anair dam plus a...

Aerohead is probably right. Anair dam plus a belly pan would give the best MPG.

I modified my air dam this summer. It was 3 inches above grade and it grounded at the least provocation (like...
Forum: Aerodynamics 08-14-2010, 02:25 PM
Replies: 59
Views: 109,192
Posted By aerohead
dam/pan

The lowest drag concept cars run belly-panned airdams ahead of the bellypan as well as lower the nose and raise the tail with active suspension.
My resources also report that there are diminishing...
Forum: Aerodynamics 12-31-2009, 12:05 PM
Replies: 23
Views: 20,673
Posted By aerohead
another guy

That guy is in Lubbock,Texas.
The Aerodynamics Laboratory at Texas Tech University did some model wind tunnel research for him.
He does use ram-air to inflate the envelope,it's clever...
Forum: Aerodynamics 12-31-2009, 12:59 AM
Replies: 23
Views: 20,673
Posted By mikeemans
Thanks Aerohead. Great recommendations, and a lot...

Thanks Aerohead. Great recommendations, and a lot of news/info for me to consider. I heard of another guy, some years back, that created a boat tail with canvass material which got "inflated" as...
Forum: Aerodynamics 12-30-2009, 04:37 PM
Replies: 59
Views: 109,192
Posted By aerohead
Case-by-case ?

Maybe every vehicle should be considered on a case by case basis.
The car shown is a rally car.Past Ford rally cars suffered higher drag as a compromise to cornering downforce from induced-lift.
...
Forum: Aerodynamics 12-30-2009, 03:51 PM
Replies: 23
Views: 20,673
Posted By aerohead
classic

Mike,the Chevy should react like any other bread box on wheels.If you can find the FLOW-IMAGES thread,you'll eventually see the Cd 0.16 "van" that Klemperer came up with in 1922 which remains a...
Forum: Aerodynamics 06-09-2009, 12:04 PM
Replies: 23
Views: 20,673
Posted By aerohead
boattail/bellypan

My hand is still gimped up from the Mesquite puncture wound so will try and be productive on internet today.----- I brought my paper on the VW project.This is what I can share:*the standard baseline...
Forum: Aerodynamics 06-08-2009, 03:44 PM
Replies: 23
Views: 20,673
Posted By aerohead
percentage decrease

When I did the mods to the CRX,I was starting at Cd0.35 and got to Cd 0.23 for a 28% mpg improvement.From the speed runs at Bonneville,the boattail was the single largest contributor to top...
Forum: Aerodynamics 06-08-2009, 03:07 PM
Replies: 23
Views: 20,673
Posted By aerohead
belly

My van was just the standard transporter and lacked all the Westfalia equipment,which I mimicked.The original underside was a deep,ladder-type frame with deep recesses.According to R.G.S.White's...
Forum: Aerodynamics 06-06-2009, 04:18 PM
Replies: 23
Views: 20,673
Posted By aerohead
Phil Knox's aero-modded 1970 VW van

Hello all.There has been some interest in streamlining vans,and especially some interest in van boat tails.Al Glidewell has scanned the photos of my college project with the VW van and we're going to...
Forum: Aerodynamics 06-18-2008, 08:04 PM
Replies: 59
Views: 109,192
Posted By Big Dave
Effects Of Air Dam (Ford F350 pickup)

Well, I finally got my air dam testing done. Six fill-ups over 2200 miles. thrre with air dam vs three without air dam.

Without air dam: 26.34 MPG
With air dam: 27.00 MPG

That...
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