[VAC] Re: Width of structural bows?

[Inlandrv@xxxxxxx]

Rob. There is no center to center nominal dimension for the main bows used by 
Airstream on your 73. The main bows are not shaped like a "U". They are 
shaped like a "Z" sort of. The vertical part of the Z is not angled, but 
straight. The inside to outside dimensions of the bows are 1 3/4 inches. Each 
flange of the bow is 11/16 wide. You must be near the center of the bows, so 
that you don't get into trouble. Airstream has never used a bow that was 1 
1/2 to 2 inches wide. Also there is no standard as to the location of each 
main bow, except for the very first and last one.    Andy