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Author Topic: semi's with trailer skirts  (Read 965 times)

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Online Don R

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semi's with trailer skirts
« on: June 15, 2011, 07:13:33 PM »
Has anyone else noticed the new aero skirts on semi trailers? It seems to me they vacuum dirt and sand off the road and put it in the air. I passed a couple (opposite directions) in construction zones and got sand blasted pretty good. I had my helmet lens open a little and sunglasses on, it got pretty blinky for a while.
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Offline cb350twin

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Re: semi's with trailer skirts
« Reply #1 on: June 17, 2011, 04:35:49 PM »
Are those those plastic sheet pieaces in the middle of the trailer that looks like there halfway about to fall off ?
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Online Don R

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Re: semi's with trailer skirts
« Reply #2 on: June 18, 2011, 10:02:00 AM »
Yes, one of those falling off that's a scary thought.
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Offline 74cb750

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Re: semi's with trailer skirts
« Reply #3 on: June 19, 2011, 09:42:23 PM »
Must be a western thing.
Haven't seen those in the Northeast yet.
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Offline Steve F

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Re: semi's with trailer skirts
« Reply #4 on: June 20, 2011, 12:01:49 PM »
According to this web site,

http://www.greatdanetrailers.com/products/misc/epa.asp

 they're supposed to be a permanent installation on the trailer, and supply at least a 4% increase in fuel economy.  I'm thinking that they are more like a giant vacuum cleaner and they throw all the grit into the air as they pass.  Maybe we should demand they stop installing these things until they come up with a safe means of reducing the sandblasting effects?
Getting "hit with grit" sucks!
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Offline Bob Wessner

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Re: semi's with trailer skirts
« Reply #5 on: June 20, 2011, 12:24:11 PM »
I've begun noticing them around here and in Ohio lately. They didn't appear to mounted parallel to the trailer sides, but rather the front anchor points are closer together than the rear making them guide airflow out and away from the trailer under-carriage. I was in the car so didn't notice affects. I expect it would be a bit disconcerting if you were coming up along side one on a bike.
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