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Current version by: Zachary ,

Text:

Colani trucks are the world's most aerodynamic, followed by International's ProStar+, then Freightliner's Cascadia. The KW T680 is somewhat aerodynamic, as is the T660 and the Volvo VN.
 
International (a Navistar company) won the court case, using results they verified in a full scale wind tunnel at NASA's Jet Propulsion Laboratory. Pete 579, Pete 386, KW T660, KW T680, Volvo VN and even Freightliner's Cascadia were deemed less aerodynamic than ProStar by a large margin... 9.6% (Cascadia, which tied with International's LoneStar) to 11% (others) less aerodynamic.
 
Then they took the two best trucks in the test (Cascadia and ProStar) and ran them on a test track. Same drivers, same weather, same conditions. The ProStar beat the Cascadia, when spec'd as close as possible to each other on fuel mileage, EGR engine issues excluded. Throw EGR (MaxxForce or DD15 engine) problems into the mix, and they run neck and neck. So if ProStar was offered as a glider, fuel savings in fleet operations would be astronomical. It's too bad that's not the case..case.

The Cascadia has evolved for the 2014 and 2015 MY as the Cascadia Evolution, which further minimizes the differences between it, the ProStar+ and the Colani trucks. Both Cascadia and ProStar have been retested, and the ProStar finally adopted SCR in 2014 with the re-launch of Cummins engines.

I now drive a Cascadia Evolution myself and am already seeing 8+ MPG according to the computer (I should have card statements and hard numbers starting this week). The roof fairing helps improve efficiency and stability, and overall, I've been impressed so far
.
Then they took the two best trucks in the test (Cascadia and ProStar) and ran them on a test track. Same drivers, same weather, same conditions. The ProStar beat the Cascadia, when spec'd as close as possible to each other on fuel mileage, EGR engine issues excluded. Throw EGR (MaxxForce or DD15 engine) problems into the mix, and they run neck and neck. So if ProStar was offered as a glider, fuel savings in fleet operations would be astronomical. It's too bad that's not the case..case.

The Cascadia has evolved for the 2014 and 2015 MY as the Cascadia Evolution, which further minimizes the differences between it, the ProStar+ and the Colani trucks. Both Cascadia and ProStar have been retested, and the ProStar finally adopted SCR in 2014 with the re-launch of Cummins engines.

I now drive a Cascadia Evolution myself and am already seeing 8+ MPG according to the computer (I should have card statements and hard numbers starting this week). The roof fairing helps improve efficiency and stability, and overall, I've been impressed so far
.

Status:

open

Original post by: Zachary ,

Text:

Colani trucks are the world's most aerodynamic, followed by International's ProStar+, then Freightliner's Cascadia. The KW T680 is somewhat aerodynamic, as is the T660 and the Volvo VN.

International (a Navistar company) won the court case, using results they verified in a full scale wind tunnel at NASA's Jet Propulsion Laboratory. Pete 579, Pete 386, KW T660, KW T680, Volvo VN and even Freightliner's Cascadia were deemed less aerodynamic than ProStar by a large margin... 9.6% (Cascadia, which tied with International's LoneStar) to 11% (others) less aerodynamic.

Then they took the two best trucks in the test (Cascadia and ProStar) and ran them on a test track. Same drivers, same weather, same conditions. The ProStar beat the Cascadia, when spec'd as close as possible to each other on fuel mileage, EGR engine excluded. Throw EGR (MaxxForce or DD15 engine) into the mix, and they run neck and neck. So if ProStar was offered as a glider, fuel savings in fleet operations would be astronomical. It's too bad that's not the case...

Status:

open