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Old 02-02-2017, 06:10 PM   #16 (permalink)
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Join Date: Dec 2014
Location: Butte, Montana
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little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
Last 3: 24.65 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Team Cummins
90 day: 22.62 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)
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Do some research on vortex generators. The waves put a spin on the air (saw teath in center of the drag wing from pose #8).
I think the vortices form a kind of air curtain bridging the gap and contributing to faster reattachment when reaching the body.
Look inth aviation vortex generators they alow the air to turn faster than a general curves (template) insted of separation from the backglass being too steep ( in the green zonepost #4)
This guy duse a decent job of explain
At about 2:44 he gets into how to get more angle of attack wile maintaining attached flow.

Yes VG s add drag ,however, they prompt reattachment/ prevent sepperation .

I think you will see a massave change in the effectiveness of the spoiler/ wings you have already tested by wsing VG at the top of the rear window like an Evo Mitsubishi
1st gen cummins 91.5 dodge d250 ,16cm turbo housing ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 29.3mpg 97mi 3.311usg 7/27/16

'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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