Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-21-2011, 06:08 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: IL
Posts: 15
Thanks: 0
Thanked 4 Times in 3 Posts
boat tail for saturn

Hello everyone, I want to boat tail my saturn. I would like to just build it off of my trunk instead of from the roofline. Would I be wasting my time to build a boat tail of that nature?

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-21-2011, 06:55 PM   #2 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: IL
Posts: 15
Thanks: 0
Thanked 4 Times in 3 Posts
does this look right?
Attached Thumbnails
Click image for larger version

Name:	overlay.jpg
Views:	72
Size:	55.9 KB
ID:	8416  
  Reply With Quote
Old 05-21-2011, 07:13 PM   #3 (permalink)
(:
 
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
Looks right. I'd think such a boattail would provide effectiveness somewhere between that of a Bonneville spoiler and a full boattail.
__________________


  Reply With Quote
Old 05-21-2011, 07:21 PM   #4 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: IL
Posts: 15
Thanks: 0
Thanked 4 Times in 3 Posts
I decided that I might as well just build a real boat tail. I have a piece of plexi that I got for free so figuring thats about the most expensive part I might as well just go all out. I Think I would like to cut it off at the 50 degree line. Any suggestions on an angle coming from the rear bumper?
  Reply With Quote
Old 05-21-2011, 07:33 PM   #5 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: IL
Posts: 15
Thanks: 0
Thanked 4 Times in 3 Posts
hows this look....too steep for the bottom?
Attached Thumbnails
Click image for larger version

Name:	prototype.jpg
Views:	79
Size:	41.8 KB
ID:	8417  
  Reply With Quote
Old 05-21-2011, 08:09 PM   #6 (permalink)
(:
 
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
I think so.
__________________


  Reply With Quote
Old 05-21-2011, 08:57 PM   #7 (permalink)
Pokémoderator
 
cfg83's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
Thanks: 439
Thanked 532 Times in 358 Posts
scottoriou -

My earlier contribution for a 3rd-gen agrees with your center of roof camber :



I'd go look at the aerocivic for what his choice was for the bottom angle.

CarloSW2
__________________

What's your EPA MPG? Go Here and find out!
American Solar Energy Society
  Reply With Quote
Old 05-21-2011, 11:35 PM   #8 (permalink)
EcoModding Lurker
 
Join Date: Feb 2011
Location: IL
Posts: 15
Thanks: 0
Thanked 4 Times in 3 Posts
after an evening of staring at the back end of a saturn I decided that right now I dont want to deal with it. I see why most boat tails are done to hatch backs. Kind of an easy canvas to work from compared to a sedan. I might just go with a spoiler that reaches out and touches the overlay. any ideas on angles for that? If I did go with a boat tail I think I would just keep my sides vertical and they would look like they would come straight up out of the trunk and then straight back from there. Working around all of the goofy angles on that car is more than I want to deal with at the moment.
  Reply With Quote
Old 05-21-2011, 11:45 PM   #9 (permalink)
(:
 
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
Anywhere from 0 (horizontal) to 30 deg up I guess. At 0 it'll stick further out the back but it should leave less trailing wake area thus be more effective. At 30 it'll stick up and get in your rearward vision but it'll intersect the template curve without sticking so far out the back- and of course it'll leave a larger trailing wake area but still be better than nothing.
__________________



Last edited by Frank Lee; 05-22-2011 at 04:56 AM..
  Reply With Quote
Old 05-22-2011, 04:21 AM   #10 (permalink)
Pokémoderator
 
cfg83's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
Thanks: 439
Thanked 532 Times in 358 Posts
scottoriou -

I made this for the other 3rd-gen owner too :





CarloSW2

__________________

What's your EPA MPG? Go Here and find out!
American Solar Energy Society
  Reply With Quote
Reply  Post New Thread






Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com