truck aeroback - Page 4 - Fuelly Forums
Go Back   Fuelly Forums > Fuel Talk > Aerodynamics
Search Today's Posts Mark Forums Read
Thread Tools Display Modes
Old 12-03-2009, 10:19 AM   #31
Registered Member
theholycow's Avatar
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
I thought the best angle was 11 degrees, not 12. I would calculate (or just measure on the truck) it by that and allow the rear height be whatever it needs to be.

I don't remember the wing thing, but if it's like the lip that is common at the top of hatches on wagons and hatchbacks (like my 2008 VW Rabbit) then it's probably a good idea.

This sig may return, some day.
theholycow is offline   Reply With Quote
Old 12-03-2009, 11:07 AM   #32
Registered Member
GasSavers_BEEF's Avatar
Join Date: Apr 2008
Posts: 1,831
just as a reference:

I think a lot of times, people just wedge it down and don't pay that much attention to the angle. I have also heard a range of angles ranging from 9 degrees to 11 degrees (and new to my knowledge, your 12 degrees).

I think that the lip at the tail is more for air separation so that the air doesn't swirl as much when it gets to the end of your vehicle.

all that being said, I am not an expert in aerodynamics and am going off of what others have said.

one user on here (basjoos) has done a lot of aero work to his vehicle. I think he used 10 degrees for his rear. I talked to him once about it and he told me he modeled it after the rear of a certain airplane (can't remember which plain either)


Be the change you wish to see in the world
--Mahatma Gandhi

GasSavers_BEEF is offline   Reply With Quote
Old 12-04-2009, 04:03 AM   #33
Registered Member
Join Date: Jun 2009
Posts: 31
Country: United States
putting a protractor on the back angle of basjoos's car the angle in the photo is about a 22 degree angle and the f150 areo cap is about a 14 degree angle. just wondering what made them come up with these angles?

GasSavers_ccrider is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
LPG or twin tank systems... Speedtorque General Fuel Topics 3 08-11-2011 09:28 AM
Partial fuel-up - when do you reset your trip odometer? johnclayton Fuelly Web Support and Community News 2 07-30-2009 09:16 PM
drivetrain resistance bagpipe goatee General Fuel Topics 9 09-14-2008 09:04 PM
Feature Request: City vs Highway jethrographic Fuelly Web Support and Community News 1 08-08-2008 09:43 AM
How did you first find kickflipjr General Discussion (Off-Topic) 17 05-24-2006 07:28 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 07:27 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.