Quote:
Originally Posted by pasadena_commut
That would also electrically insulate the aluminum from the frame of the car, as long as it wasn't too wet underneath. The downside of using a different metal in the screen than in the body of the car is that it opens up the possibility of galvanic corrosion. Aluminum + iron + wet salted roads = not good.
|
Good thoughts.
How about this: Attach long strips of Coroplast to the underbody, then attach the alu. screen to them via good duct tape, adhesive, etc, keeping the screen tight. Then put the wider panels of Coroplast on, such that it clamps the screen between layers of upper and lower Coroplast in a sandwich, and electrically insulates the alu. screen. The Coroplast can be stiffened by inserting narrow dowel rods into its hollow flutes, for longitudinal rigidity.
That way, the screen's stresses are carried on a wide surface between Coroplast, rather than concentrated at screws, etc..