Quote:
Originally Posted by suspectnumber961
Did it a little different in that I cut off the extra 2 flanges and just used the straight edge...fasted every 6" using pan head SM screws and flat washers. I will eventually paint these black.
The extra flanges made it hard to have a neat installation. Material is still fairly "wavy" in appearance though.
I also put a metal rod inside the hollow area at the bottom to allow shaping the bottom edge some...and this will help hold the center part as the wind hits it.
As far as I can tell I gained maybe 1-2 mpg from this mod.
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I used that same stuff, I think. I shaved off the two flanges and then sanded the edging smooth. Good idea on the metal rod inside the hollow area. I wonder if shooting in some great stuff insulation would stiffen it up further. Not that you need it - Just thinking out loud.