View Single Post
Old 09-22-2011, 03:05 PM   #98 (permalink)
Frank Lee
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,762

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,585
Thanked 3,555 Times in 2,218 Posts
Quote:
Originally Posted by euromodder View Post
Why do you call the results disappointing ?
Most of the very high-milers (in absolute terms, not % over EPA) on EM, at least have rear-wheel skirts.
Once upon a time they were highly fashionable on cars.

Front wheel skirts are not that easy as DIY-items, and home-made installations usually aren't that clean and add to the frontal area.


Surely some cars have low Cd without skirts, but they still hover around the 0.25 mark where aero progress has stopped for production cars (see Hucho).

If manufacturers want to go below that, it'll have to take more aero measures, and even smaller improvements will have to be accepted.

But when they look at the market, they see their customers still wanting to buy huge tanks instead of cars ...
A couple of percent is not even detectable without highly accurate instrumentation. I know; I've tried it.

Loremo is but one example of a low Cd skirtless design and at .20 it's well below .25.
__________________


  Reply With Quote