fj12ryder wrote:
"I could actually care less if you can't find the studies. If you don't believe it, don't do it. I doubt there are any truckers anywhere who have taken their wind deflectors off."
There's a very big difference between the placement of semi wind deflectors and RV wind deflectors, in fact it can be measure in feet. If you don't get the deflector close enough to the trailer, there isn't going to be much benefit. Of course if everyone agreed that they worked as well as you're suggesting, there wouldn't be a semi out there that didn't have them. But there are lots of them, so there must be a lot of delusional people out there. :)
And .5 mpg increase can be put down to many things, not the least being a unconscious desire to make sure the mileage is better, i.e., backing off just little bit, a little less acceleration, many things can show .5 mpg increase. A person could perhaps be delusional to think it has to be the results of a wind deflector. Sometimes the data is worked with to support the theory, rather than vice versa.
The lengths people will go through to make their point is ridiculous. Everyone saying that they have used one and got better mileage and you still don’t like the answer. Sorry, but they can and do work! Try it for yourself and see. But stop trying to make yourself believe it can’t happen!
