View Single Post
Old 06-05-2012, 09:22 AM   #96 (permalink)
Tango Charlie
Deadly Efficient
 
Tango Charlie's Avatar
 
Join Date: Jun 2008
Location: Goshen, Indiana
Posts: 1,234

Olivia - '03 Pontiac Vibe base
90 day: 36.01 mpg (US)

R2-D2 - '00 Honda Insight
90 day: 58.81 mpg (US)
Thanks: 134
Thanked 176 Times in 91 Posts
Quote:
Originally Posted by JethroBodine View Post
Those very corners have nagging at me for a while, but I was leaning toward the thought that if I did round them like you suggest, that the path way that the air travels from the front corners of the car would exceed the max angle of 21/22 degrees.
Only a tuft test will tell for sure (well, that and a day in a million-dollar-an-hour wind tunnel...but you know what I mean). You may be thinking somewhat two-dimensionally about the 21 degrees. I have heard that you can go progressively a bit steeper, if you're getting air "filling in" from an adjacent side via a rounded corner. Which makes sense to me.

Tuft testing is time and labor-intensive, fiddly, and complicated to pull off successfully. But oh, so worthwhile.
__________________
-Terry
  Reply With Quote
The Following User Says Thank You to Tango Charlie For This Useful Post:
JethroBodine (06-05-2012)