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Old 05-18-2015, 03:24 AM   #1 (permalink)
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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)
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91 Dodge airocap

This is my prototype airocap
Attachment 17595
making my rain drop

Truck is a 91 Dodge D250. 2wd 3/4t
A less than150lbs for complete airocap and headache rack
I used 12mill boat shrink wrap for my prototype covering
http://pages.ebay.com/motors/link/?n...363918&alt=web

$169 usd shipped for 10 ft x40ft this thickness is only available 40ft wide by $10usd per ft.
Thinner, cheaper, narrower shrink wraps are available, other cover options are ortex600, ortex6000, aircraft fabric, or regular canvas as well many others. I went with shrink wrap for quick repeatable and smooth and cheep prototype. for the aircraft fabric and ortex they require special adhesive to attach. Ortex600 is my choice for my final covering and canvas would be flapy and heavy after waterproofing

Attachment 17594
the canap can be removed for aquard load or simply closed on the load.switch leaves the headache rack with its taper from cab width to mid bed rail . The steel frame can support aprox. 180lbs (me) hanging in the center. Can you say snow load
Attachment 17597
Attachment 17596
I set the rear defuser at approximately 10" past to clear the tailgate for opening and closing without opening the cap

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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




Last edited by BabyDiesel; 05-18-2015 at 03:32 AM..
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Old 05-18-2015, 03:38 AM   #2 (permalink)
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Awesome has happened when you aero mod a 1st gen Dodge with a 12 Valve

None of your pictures came up, and the links are dead? If you will, upload them to a photo database such as Photobucket or Postimage.org Copy the direct link and paste in the box after clicking the "Insert Image" button. It is yellow with a mountain on it. Hit Enter and the picture should be in the reply for you to post.
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Old 05-18-2015, 04:57 AM   #3 (permalink)
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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)
Thanks: 156
Thanked 244 Times in 167 Posts
Click image for larger version

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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



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Old 05-20-2015, 01:49 AM   #4 (permalink)
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Big Blazin' - '88 Chevrolet K5 Blazer Silverado
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Team Streamliner
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That is different! I dig the boat wrap you used, that was something no one has thought of yet to my knowledge.

Any mileage increases to speak of?
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ZX2 coast-down testing for Cd & Crr
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Old 05-22-2015, 01:53 AM   #5 (permalink)
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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)
Thanks: 156
Thanked 244 Times in 167 Posts
better mileage

first tank was above my average (2nd best) wile loaded 5520 tair7160 gross with dirty air 22.6 fule fill dated 05/ 05/ 15 up the Columbia river gorge . As compared with 01/09/15 fill 20.06 mpg going the other way.
2nd tank same load 550el to 5600el 22.22 up contanental divide dated 05/07/15 compared with down @23.01
Conclusion
yes despite a load and not able to close all the way
Attached Thumbnails
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ID:	17671  Click image for larger version

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ID:	17672  
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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



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Old 05-22-2015, 02:03 AM   #6 (permalink)
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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)
Thanks: 156
Thanked 244 Times in 167 Posts
oratex 600 light weight oratex 6000 going through FAA approval process

My easy compound curve fabric for after prototyping

Oratex Specifications and Technical Data

Oratex6000
Material: Modified polyester
Material thickness: Approx. 170 m (.0067 in.)
Weight: Approx. 140 to 160 g/m (0.459 – 0.524 oz/ft)
Tensile strength lengthwise: Min. 1300 – 1600 N/50 mm
Tensile strength crosswise: Min. 1100 – 1400 N/50 mm
Breaking extension lengthwise: 12 – 20%
Breaking extension crosswise: 12 – 20%
Tear propagation load lengthwise: 26 – 32 N
Tear propagation load crosswise: 28 – 34 N
Burst strength: > 1000 kPa (> 145 psi)
Burst elevation: > 15 mm (> 0.59 in)
Shrinkage lengthwise: 9 – 13%
Shrinkage crosswise: 8 – 12%
Flammability: Not flammable after application to airframe
Melting point: 250C (482F)
Air permeability: Airtight
Other characteristics: Fuel resistant, can be painted
Oratex600
Material: Modified polyester
Material thickness: Approx. 120 m (.0047 in.)
Weight: Approx. 92 – 122 g/m (0.301 – 0.4 oz/ft)
Tensile strength lengthwise: 750 – 1050 N/50 mm
Tensile strength crosswise: 650 – 950 N/50 mm
Breaking extension lengthwise: 10 – 18%
Breaking extension crosswise: 11 – 20%
Tear propagation load lengthwise: 18 – 24 N
Tear propagation load crosswise: 16 – 22 N
Burst strength: 500 – 700 kPa (73 – 102 psi)
Burst elevation: Approx. 14 – 18 mm (0.55 – 0.71 in)
Shrinkage lengthwise: (338F) 8 – 12% (reference temperature 170C)
Shrinkage crosswise: (338F) 8 – 12% (reference temperature 170C)
Flammability: Not flammable after application to airframe
Melting point: 250C (482F)
Air permeability: Airtight
Other characteristics: Fuel resistant, can be painted
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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




Last edited by gumby79; 05-22-2015 at 08:52 PM..
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Old 05-22-2015, 03:04 PM   #7 (permalink)
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That's an interesting material. How did you fasten it to it's framework? Staples?
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Old 05-22-2015, 04:13 PM   #8 (permalink)
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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)
Thanks: 156
Thanked 244 Times in 167 Posts
The shrink wrap is heated to almost melting pointand it sticks to it self[edit add :as compared to the oratex is put on with a heat activated glue to it self or your frame of choice
Attached Thumbnails
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ID:	17684  Click image for larger version

Name:	Wraparound Air Fraime.jpg
Views:	49
Size:	104.3 KB
ID:	17685  
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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




Last edited by gumby79; 12-25-2015 at 02:00 AM..
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Old 05-22-2015, 04:46 PM   #9 (permalink)
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Quote:
Originally Posted by gumby79 View Post
first tank was above my average (2nd best) wile loaded 5520 tair7160 gross with dirty air 22.6 fule fill dated 05/ 05/ 15 up the Columbia river gorge . As compared with 01/09/15 fill 20.06 mpg going the other way.
2nd tank same load 550el to 5600el 22.22 up contanental divide dated 05/07/15 compared with down @23.01
Conclusion
yes despite a load and not able to close all the way
I'm a little confused and have a hard time figuring out what you are saying. can you please explain what it means above in bold?
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Old 05-22-2015, 05:59 PM   #10 (permalink)
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'tair' = tare

el = elevation

'fule' = fuel

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aero cap vs tonneau, aero fairings, boat tail, dodge, pickup aero

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