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oil pan 4 · 03-18-2016, 03:12 PM

I was not sure how I wanted to finish the out side ends of my bumper but now I have a few ideas.

I was driving along and saw a tractor trailer with a trailer side skirt that had vortex generators cut into it where it terminated just forward of the rear wheel and thought that's it. They are functional and look cool.

So now I just need to figure out the fine details to cut in the vortex generators.
I would like to take these edges:

And cut them on to the trailing edge of the bumper.

On the tractor trailer I saw the VGs appeared to be about 90 degrees and about 2 inches. The ones in the picture appear to be a little less than 90 degrees. The ones I see on tractor trailers are 90 degrees or more.
Does any one know specifically what size and angle I could be cutting?

03-18-2016, 03:12 PM	#26 (permalink)
oil pan 4 Corporate imperialist Join Date: Jul 2011 Location: NewMexico (USA) Posts: 11,266 Sub - '84 Chevy Diesel Suburban C10 SUV 90 day: 19.5 mpg (US) camaro - '85 Chevy Camaro Z28 Riot - '03 Kia Rio POS Team Hyundai 90 day: 30.21 mpg (US) Bug - '01 VW Beetle GLSturbo 90 day: 26.43 mpg (US) Sub2500 - '86 GMC Suburban C2500 90 day: 11.95 mpg (US) Snow flake - '11 Nissan Leaf SL SUV 90 day: 141.63 mpg (US) Thanks: 273 Thanked 3,569 Times in 2,833 Posts	I was not sure how I wanted to finish the out side ends of my bumper but now I have a few ideas. I was driving along and saw a tractor trailer with a trailer side skirt that had vortex generators cut into it where it terminated just forward of the rear wheel and thought that's it. They are functional and look cool. So now I just need to figure out the fine details to cut in the vortex generators. I would like to take these edges: And cut them on to the trailing edge of the bumper. On the tractor trailer I saw the VGs appeared to be about 90 degrees and about 2 inches. The ones in the picture appear to be a little less than 90 degrees. The ones I see on tractor trailers are 90 degrees or more. Does any one know specifically what size and angle I could be cutting? Attached Thumbnails __________________ 1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost. 1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end. 2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.