View Single Post
Old 11-14-2009, 01:41 AM   #5 (permalink)
aero guerrilla
Piwoslaw's Avatar
Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,541

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
Thanks: 1,056
Thanked 630 Times in 396 Posts
Originally Posted by jamesqf View Post
OK, but how much energy is used to compress the air? My natural pessimism says it's going to take more than it saves.
Exactly. I've thought about making a duct that would transport air from the high-pressure zone in front of the car to the low-pressure zone behind it, but then decided that there would be plenty of drag in the duct, and it wouldn't be doing anything that's not already happening under/around the car. Generating compressed air will have an even lower efficiency.
e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell

Piwoslaw's Peugeot 307sw modding thread

  Reply With Quote