View Single Post
Old 01-04-2012, 05:11 PM   #8 (permalink)
Master EcoModder
Sven7's Avatar
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
Thanks: 782
Thanked 666 Times in 409 Posts
Originally Posted by duffremle View Post
I've kind of wondered about the feasibility of a windsock style boattail. Something along the lines of a sea anchor, but fitted to the rear end of the car with just enough of an opening to fill it with air at speed.
Wouldn't this work like a parachute, sucking energy from the car?

Here's how I see it. To inflate the sock it would have to have at least equal pressure inside than out. This would mean it's got to pull in a lot of air. So, to keep it from deflating or rippling at speed it might add more drag to your car than it actually solves. If you closed off the back and had small intakes at the cant rails like a Ford RS200's air intakes you might be able to keep it inflated. But I still doubt the real-world viability. Venturi intakes, perhaps?
He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
  Reply With Quote