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Old 12-31-2016, 11:10 AM   #11 (permalink)
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I appreciate the generosity of the offer. But I'm about 2000-miles away and assume I can find some in DFW when the time comes.

You've certainly convinced me that skirting is the practical approach.

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Old 12-31-2016, 11:38 AM   #12 (permalink)
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That factory lip below your bumper is long gone on my ex logging truck. Seemed silly and costly to put back when I can improve on it.
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Old 01-01-2017, 11:19 AM   #13 (permalink)
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Quote:
Originally Posted by skyking View Post
That factory lip below your bumper is long gone on my ex logging truck. Seemed silly and costly to put back when I can improve on it.
The air dam question came up in about 2009. I walked around the parking lot with a steel tape measure and checked air dam lip height. New trucks and old. They were pretty much all with 10" ground clearance.

Still my understanding that "no lower than lowest component on undercarriage" is general rule of thumb.

Making a slightly deeper front dam, but adding side skirts down the body, is my interest in the material.
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Old 01-01-2017, 11:40 AM   #14 (permalink)
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I will keep you all posted. As much as I dislike doing it, I will daily drive my truck some more this winter/spring to do testing.
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Old 01-03-2017, 11:55 PM   #15 (permalink)
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I have some belting now! About 0.25 thick 3 ply with rubber in only one side. 5.875" width and some 10".
Shipping will be most of the cost. He had huge used rolls but this is new.
Let me know how long a piece and your zip code.
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Old 01-03-2017, 11:57 PM   #16 (permalink)
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The ~6" wide stuff is plenty for most applications.
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Old 01-04-2017, 09:30 AM   #17 (permalink)
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The legal lowest any body /suspension component can be from the ground is:
7.23" for a 245/75Rxx , 7.82" for a 265/75Rxx aka the bottom of the wheel. Simple math ... the width x aspect ratio =hight limit. Eg 245x.75xx=7.23. Thewheel size is of no concern.

This is to prevent a ground strike and loss of control, caused by a flat tire.

This is a justification for stupidly large wheels (20"+) it keeps the cops off your back.
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Old 01-04-2017, 09:35 AM   #18 (permalink)
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Looks like $12 ( at the most) for flat rate shipping, and $1 a foot for the 6" and 2$ a foot for the 10"
Typical car dams are 5' long, trucks 6' long.
I'll get a picture of the stuff later, but it is simply black shiny rubber on the one side and the fabric on the other. I have not cut it yet but I anticipate it being easier to cut than the stuff with rubber on both sides of the fabric layers. Work it from the fabric side then fold it open to free up the grab on your razor knife blade.
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Old 01-04-2017, 09:38 AM   #19 (permalink)
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Woody - '96 Dodge Ram 2500 SLT
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90 day: 15.1 mpg (US)

TD eye eye eye - '03 Volkswagen Beetle GLS
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Quote:
Originally Posted by gumby79 View Post
The legal lowest any body /suspension component can be from the ground is:
7.23" for a 245/75Rxx , 7.82" for a 265/75Rxx aka the bottom of the wheel. Simple math ... the width x aspect ratio =hight limit. Eg 245x.75xx=7.23. Thewheel size is of no concern.

This is to prevent a ground strike and loss of control, caused by a flat tire.

This is a justification for stupidly large wheels (20"+) it keeps the cops off your back.
they don't run around measuring, and a soft rubber edge won't have much of a ground strike anyway. More like a ground caress
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Old 01-04-2017, 10:16 AM   #20 (permalink)
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little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 2×4 AUTO
Pickups
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.76 mpg (US)
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Thanked 427 Times in 278 Posts
Agreed but why dance with the devil's wife.
Plastic bumper covers on rice rockets and low riders . Are more the target of these laws. In my experience it has been used for harassing the rocketeers. Your 9"should be well above this safe limit of advice. ?will the 9" air dam be low enough to shroud the pumpkin? Just curious.

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1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20


Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg


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