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Old 09-30-2013, 09:26 PM   #1 (permalink)
jeff88
Lots of Questions
 
Join Date: Jan 2013
Location: San Jose
Posts: 665

Motor-Rolla - '01 Toyota Corolla LE
Team Toyota
90 day: 28.3 mpg (US)

Gaia - '99 Toyota 4Runner SR5 Highlander
90 day: 19.78 mpg (US)

Gaia - Round 2 - '99 Toyota 4runner SR5 Highlander
90 day: 17.92 mpg (US)
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Aero-Modding the 4Runner

I am planning on building a roof rack for my 4Runner for a couple of reasons, one of which is for it to be the foundation for some eco mods. After I attach the roof rack, I will build and attach a kammback directly to the back of the RR. This way, if need be, I can take it off. I will also add in a wind fairing at the appropriate angle to help the air go around the top of the truck more smoothly. I played with the truck pic and aero template and this is what I got:



Can anybody give me any insight? Do I have it in the right position? I tried to line up the very back corner and the shape of the windshield with the template, but that leaves the whole bottom out. Is that just a result of the truck being so tall? If I lower the template, then the only way to match it would be to chop the back of the truck off! :P

I want to see how this lines up before the roof rack and then, of course, I will reevaluate once the RR is on. There is a rather large gap from the roof of the truck to the curve of the template, which I plan to fill with the RR and fairing, but is there a way to tell how tall that gap is? I'm not sure how tall I want to make the RR yet, but the template height will aide me in that decision. I want to add the spare tire to the rack, but I don't want the tire to stick up higher than the rack (I am going to make something solid and add it to the top of the rack, so the air will flow well all the way to the back, so the tire can't be taller). With the tire out of the way, I can do a better job on the planned belly pan.

Wow! Over-complicated this as always! Thanks for reading and the help!

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