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Old 02-02-2017, 06:10 PM   #16 (permalink)
gumby79
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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
Pickups
Team Cummins
90 day: 22.62 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
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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.
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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)
https://youtu.be/SXwVyxorvno
This guy duse a decent job of explain
https://youtu.be/9Whd_KnsLKE
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
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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


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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