Mileage change with smaller lighter trailer

Turtle n Peeps wrote:
OP, yes you will get better mileage. You will go from 7.8 to around 8.0. And that's if you tow in the mountains a lot. :)

No matter what people say, V trailers, spoilers, air tabs, wings and the such are not much use. Wind is very sneaky and very counter intuitive and wants to do it's own thing.

If you did aero tests on a wing on an SUV or truck you would find out that the wind gets pushed over and around the wing and then immediately wants to fill in the void of the vacuum the wing just created.
This depends on where the wing is mounted in relation to the trailer. it needs the proper distance and correct angle.

Also the underside and back of the trailer has just as much or more resistance to air than the front. That's why you see a lot of long haul trucks that have side skirts now. Even then it's very little help. But if they pick up a 10th of a MPG and the company has 500 trucks on the road that can add up pretty quickly for them.
True, but our trailers sit quite a bot lower than a semi trailer.

For the average RVer, not so much. On my vacation this year I traveled 5,700 miles. Even if I saved a miracle of 1 MPG with a wing or whatever I would have only saved about a tank of fuel over the 5,700 miles.
A tank of fuel is pretty substantial. between $100 and $150.

There are a few V nose trailer sites out there on the WWW. If you go to one I'm sure they will all confirm what I told you about the mileage.

My real world testing proves otherwise! Like I said I saved around $200 on my round trip to MB from Chicago. and the truck didn`t work as hard. just to test it on that trip I lowered the wing for 1 tank and my mileage dropped back to the 6.8mpg I was getting without it, and you could feel the wind drag much more. The wings work if set up properly. the key is placement and angle. I have it so the air is up and over the trailer before it curls back in front of it.