I'd like to put an air dam and belly pan on my Canyon. I'm not real concerned about ROI or payback, but would like to get closer to that magic 40 MPG in summer. Here's a picture taken about six inches above the floor.
The transmission crossmember is several inches below the front crossmember. I figure that a belly pan could angle down from the front crossmember straight to the transmission crossmember. Then the air dam would extend down to the level of the front crossmember. The air dam would be made from conveyor belting. It needs to stand up to smashing into a snowbank.
The problem is this. How do I deal with snow and salt building up on top of the belly pan? I don't mind 100 lbs of snow and sand piled up in there, but the salt in it will rust out anything. And there's no way for rain to flush it out.
Any belly pan that I put in will stay in year around.