Just starting on wheel skirts, need opinions/ideas

[Chris D.]

I bet that coroplast would be a great setup.
Maybe use that stuff to get the base started then maybe lay a layer or two of glass on that to give it the desired finish to be filled primed and painted..

[s2man]

Frank, got any pic's?

[Chris D.]

Hey Frank, what do you drive? got any pictures or specs?

[MetroMPG]

Originally Posted by Frank Lee

It's not that bad... on level ground...

Cars on non-level ground are even easier to roll.

Who kidnapped the Frank Lee who's all about practical solutions??? I want him back!

[Chris D.]

Hack Job time!

I desided that if I was going to really go ahead with the wheel well covers that I was going to
do it right with fiberglass and a clean finish to compliment the truck, or at least make it less noticable

So I desided to do a "test run" with some hack job skirts..
I want #'s first before I go ahead with the good stuff..

theres a metal support bridging the lowest section of the wheel well opening and its bolted in place..

the rest is duct taped to hell!
I also removed the tailgate..

this tank is going to be crap because I road raged on some dickhead that chucked a fast food soda at me as he swerved around me, So I popped it into 3rd, spun em and chucked my chocolate shake back at em, direct windsheild hit! Put them in their place.. Had to burn some carbon out anyways he was on my ass highbeaming me and honking while I was in the slow lane on a 3 lane freeway with nobody else in any of the other lanes, I was doing a solid 55mph..

I used Coroplast for the panels.. super light.. I didn't realize how cheap this stuff was..
So I went this route..
looks getteo as hell, I can deal with it for a tank or two (duct tape permitting)

Maybe this will help me gain back what I lost going WOT in it.. I'm at 1/2 tank now..

[cfg83]

Chris -

The temporary setup is the right thing to do to "prove the mod".

CarloSW2

[MetroMPG]

Except you're not going to get any useful data because you've changed too many things.

Tank to tank testing is dodgy at best. But you've thrown a spanner in the works by also removing the tail gate. (Also - why would you remove the tailgate?)

You should only change one variable at a time.

[elhigh]

Originally Posted by Chris D.

I also removed the tailgate..

this tank is going to be crap because I road raged on some dickhead that chucked a fast food soda at me as he swerved around me, So I popped it into 3rd, spun em and chucked my chocolate shake back at em, direct windsheild hit! Put them in their place.. Had to burn some carbon out anyways he was on my ass highbeaming me and honking while I was in the slow lane on a 3 lane freeway with nobody else in any of the other lanes, I was doing a solid 55mph..

]

People don't do stuff like that around here because they're too likely to get shot. And deservedly so. An armed populace is a polite populace.

Put the gate back on. You can't get meaningful results if you're testing more than one variable at a time - if your results are the same as what you've been getting all this time, does it mean the gate is good and the skirts bad, or the gate bad and skirts good? Or both have no effect?

This was a big thing the prof harped on in Statistics 230, run several tests, then run all the data together into one result for a big picture - don't try to test everything at once. That way lies madness.

Stats 230 was where I discovered I actually enjoy working in Excel.

[MetroMPG]

Chris - I just had a look at your fuel log. You are not going to be able to see any difference from the wheel skirts just by watching your tank to tank results. (Not pointing at you specifically - this applies to anybody, really.)

Let's say your skirts are hypothetically good for a 2% boost in FE. Based on your current 90 day average of 28.7 mpg, that means you'll have to be able to detect a 0.55 mpg difference. Ain't gonna happen.

Consider that the average difference between your 3 fill-ups to date is 2.16 mpg and you can see the problem here.

Again, I'm not saying that the skirts aren't worth doing. But the only way to test them thoroughly is either with instrumentation (eg. ScanGauge) in an as-controlled-as-possible A-B-A scenario, or multiple coast-down runs, also controlled as possible.

[FoMoCo_RANGER]

Originally Posted by MetroMPG

Except you're not going to get any useful data because you've changed too many things.

Tank to tank testing is dodgy at best. But you've thrown a spanner in the works by also removing the tail gate. (Also - why would you remove the tailgate?)

You should only change one variable at a time.

is removing the tailgate more of a problem, then a help?