drilled or faired ladder racks?

[aerohead]

Originally Posted by miket

Aluminum streamline tubing would be ideal but would cost $100+? How much aero improvement would I get for that?

Ladder are lifted from the sides or slid up from behind. I suppose the rearmost fairing could be made of a ridgid and weak material if it was attached on the bottom to a spring so it could bend slide or twist downward from that rack during loading.

The square tubing has Cd 1.15
The streamline tubing has Cd 0.06

[miket]

I meant would it be worth it in $ per cdA reduction? However a Polyethlene foam fairing might provide the same benefit without the cost.