Ok, before you start this seems a bit off the wall to me too. I have been reading about mods to trucks involving sealing off the bottom side to improve air flow. Seems like a lot of work to me. But I have somewhat seriously considered mounting a wind deflector(got a better name?) behind the wheel wells and in front of the tailgate. I have an Outback and the front is somewhat rounded, but I have a bug line about half way up. Think it's worth it?Also was looking at some wind tunnel tests and see a vacuum behind the trailer. Would an air scoop under the trailer pointed up from the bumper help? Try not to laugh too hard. Don't want any split ribs out there!

Think I hurt my knee by slapping my leg so hard.. :B

Is your goal to prevent bugs and dirt from landing on the trailer ? Or to improve fuel mileage ?The tests I have seen for deflectors do little to help in either case.Staying at 55MPH and using a light foot on the throttle helps to increase fuel mileage. A good wax job makes it easier to get rid of the bug guts....

the bear II wrote:Is your goal to prevent bugs and dirt from landing on the trailer ? Or to improve fuel mileage ?The tests I have seen for deflectors do little to help in either case.Staying at 55MPH and using a light foot on the throttle helps to increase fuel mileage. A good wax job makes it easier to get rid of the bug guts....Fuel mileage.

Altern wrote:Think I hurt my knee by slapping my leg so hard.. :BLaugh all you want, but the O.P. is right on the money....Source

Thanks Francesca, that is the one I was looking at. Another had a scoop on the bottom of the trailer pushing air into the vacuum. Some 1/4" plywood and fiberglass resin? The bugs are not the problem, just an indication of where the air hits the trailer.Altern, can I send you an ace bandage? LOL

Aerodynamics | Good Sam Community

25 Replies

campigloo
Explorer
Dec 05, 2013
Thanks Francesca, that is the one I was looking at. Another had a scoop on the bottom of the trailer pushing air into the vacuum. Some 1/4" plywood and fiberglass resin? The bugs are not the problem, just an indication of where the air hits the trailer.

Altern, can I send you an ace bandage? LOL
Francesca_Knowl
Explorer
Dec 05, 2013
Altern wrote:
Think I hurt my knee by slapping my leg so hard.. :B

Laugh all you want, but the O.P. is right on the money....

Source
campigloo
Explorer
Dec 05, 2013
the bear II wrote:
Is your goal to prevent bugs and dirt from landing on the trailer ? Or to improve fuel mileage ?

The tests I have seen for deflectors do little to help in either case.

Staying at 55MPH and using a light foot on the throttle helps to increase fuel mileage. A good wax job makes it easier to get rid of the bug guts....

Fuel mileage.
the_bear_II
Explorer
Dec 05, 2013
Is your goal to prevent bugs and dirt from landing on the trailer ? Or to improve fuel mileage ?

The tests I have seen for deflectors do little to help in either case.

Staying at 55MPH and using a light foot on the throttle helps to increase fuel mileage. A good wax job makes it easier to get rid of the bug guts....
Altern
Explorer
Dec 05, 2013
Think I hurt my knee by slapping my leg so hard.. :B

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Aerodynamics

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