Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Boat tail on a normal car? (3-box sedan)

cliffyballs · 03-14-2011, 02:31 PM

Hey everyone,

First time post and its gonna be a tough one, but coach said go big or go home...if i have to go home i want to use as little gas as possible!.

I would like to build a boat tail for a 2003 Jetta GLS 2.0L gas engine. I know little to nothing about boat tails other than what they look like.

My plan is to use a trunk mounted bike rack and modify it accordingly.

I want to use plexiglass at least on the top so i can still see out of the back.

I will eventually use trailer lights for brakes and blinkers.

So my question/s:

How long do i need to make it?
What things do i need to keep in mind?
What angles do i need to maintain?
What am i forgetting that will cause worse MPGs?
What do i think i am doing right that is actually wrong?

Any help would be great!

03-14-2011, 02:31 PM	#1 (permalink)
cliffyballs EcoModding Lurker Join Date: Mar 2011 Location: Alabama Posts: 24 Leftnut - '03 Volkswagen Jetta GLS Thanks: 4 Thanked 1 Time in 1 Post	Boat tail on a normal car? (3-box sedan) Hey everyone, First time post and its gonna be a tough one, but coach said go big or go home...if i have to go home i want to use as little gas as possible!. I would like to build a boat tail for a 2003 Jetta GLS 2.0L gas engine. I know little to nothing about boat tails other than what they look like. My plan is to use a trunk mounted bike rack and modify it accordingly. I want to use plexiglass at least on the top so i can still see out of the back. I will eventually use trailer lights for brakes and blinkers. So my question/s: How long do i need to make it? What things do i need to keep in mind? What angles do i need to maintain? What am i forgetting that will cause worse MPGs? What do i think i am doing right that is actually wrong? Any help would be great!