Aero modding continues. From the Wiki we know that a tonneau and cab deflector is 80% as good as a full aero shell. I already have a van so I want to retain the open load bay.
I have factory inserts under the roof, which would be either for the factory full shell or sports bar:
I found some ally strip in my recycle bin. It had previously been bent for a solar panel install so they are a bit wavy, but they were free:
Tip: if you want square bends using a vice, use a set square to make sure you've clamped your stock perfectly vertical I also used pipe bending pliers to help with the curves.
I don't know why people are so stuck on coroplast, when the other aeromodding staple, lawn edging can be use to make long lasting and good looking deflectors, spats etc etc.
I used electrical tape to help hide the supports:
Road Test.
While I have no ABA test, high speed shows that the soft tonneau doesn't balloon any thing like it did before.
It also helps shade the interior and add a little privacy, which are both side benefits.
This was a quicky install using what I had at hand. I now have some shiney new alloy strips and I bought some 6" edging to replace the 3" that I have at the moment.
The 6" edging will also make great tyre spats.