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Old 06-02-2013, 12:03 AM   #51 (permalink)
redneck
Master EcoModder
 
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Join Date: Jun 2009
Location: SC Lowcountry
Posts: 1,796

Geo XL1 - '94 Geo Metro
Team Metro
Boat tails and more mods
90 day: 72.22 mpg (US)

Big, Bad & Flat - '01 Dodge Ram 3500 SLT
Team Cummins
90 day: 21.13 mpg (US)
Thanks: 226
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Quote:
How's it do with the 18-wheeler bow wave and backwash?

Bow waves and backwash do push it around more than before the tail was added. It didn't feel unsafe, it just required paying better attention and a firm grip on the wheel when they were passing.

The big difference is in bow waves between different makes of trucks. Some will push it over a 1ft. or more, while others barely make it wiggle. Which goes to show there is a lot room for aerodynamic improvement by the truck manufactures.

Backwash severity was determined by what trailer they were pulling. Flat beds and tankers seem to have little effect, while boxes obviously had the most (more than average).

The car likes clean air. Mpg is significantly less when I'm their wake according to the computer. So I stay away.


Quote:
slowmover

Well, since we don't know how the fishing turned out
Caught a few small ones...










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Last edited by redneck; 06-02-2013 at 08:17 AM..
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The Following 3 Users Say Thank You to redneck For This Useful Post:
aerohead (06-08-2013), MobilOne (05-30-2015), slowmover (06-03-2013)