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Old 12-15-2017, 08:54 PM   #7 (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
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 24 AUTO
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.77 mpg (US)
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Thanked 370 Times in 240 Posts
Originally Posted by freebeard View Post
I know you like this tape.

Coefficient of drag down, Aera(Area) up at equal percentages will net a zero change.
I had to read that a few times. Was there there a squiggle under 'Aera'?

Your analysis is very thorough. The questions I have are:
  • Why 2" below the lowest point?
  • How many inches from the bottom of the drain plug to where 90% of the oil pan/crossmember is occluded?
  • Have you considered that the airdam and tonto were working together (like Porsche experiences with airdam/spoiler)

I suspect eventually wheel spats will be like the 'venetian blind' style of Formula 1 front dive planes, turned 90.
No squiggle Android doesn't believe in spell check and my dyslexia prohibits me from Catching it myself. Apologies.
0:0 to the lowest point of structure half an inch above my oil drain pan plug.
Yes the total package will work together , when properly designed , however in this case we tested with the Tonto cover installed in both instances so this design did not work with my other Aero modifications . no test was run with the air damVs stock.
1st gen cummins 91.5 dodge d250 ,HX35W/12
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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The Following 2 Users Say Thank You to gumby79 For This Useful Post:
aerohead (12-16-2017), freebeard (12-15-2017)