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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-28-2012, 07:20 PM   #1 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 663 Times in 478 Posts
what would you do?

I am taking one more trip to Dallas from Sacramento in May.(1775 miles over 2 1/2 days)
On my last trip I was able to get 32mpg with an 22 epa.
As you may know from previous posts I have done the following:
adjusted nut behind the wheel
scangauge
upsize tires (from 245/45/18 to 245/50/18 27.7" diameter)
43psi
nitro
IMPUL body kit (2" lower)
Lowered front end 1.25"
rear window spoiler
rear trunk spoiler
underbelly in front
underbelly in rear
Grill block behind grill
window tint (rear and rear sides)
window visors
Rear wheel skirts

So I have two thoughts:
1. I have been following the kammback threads and am concidering a clear kammback......
or....
could I acheive similar results by raising or lengthing the rear spoiler?
I was inspired by that windtunnel video with the new mb twoseater where the rear spoiler raised up....
however, I dont want ducttape it to the car. I want to try to make to look proffessional. I have some ideas but dont want to get started unless the group feels that it would help.
Also I have never figured out how to lay the 'templet' over the car to even begin to take measurements

2. I am going to run a lip or dam on the front. Havent worked uot the details because the car scrapes in the front sometimes so I dont want to do something now and drstroy it before the trip. there is about 5" from the ground to the bottom of the lip.
So do you think that doing a lip or dam is worth it for the trip?

Here is a side view of the car:



here is the software that VIIO did:
Here's a model of the air velocity affecting your car at 55mph - red is slow (drag/turbulence) and green/blue is full speed air (low drag = good).




you can see the lip that I had on for the last trip and the skirt in back



here is the front(less the required lic plate)

__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938

Last edited by mcrews; 02-28-2012 at 07:39 PM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-28-2012, 08:02 PM   #2 (permalink)
Master EcoModder
 
larrybuck's Avatar
 
Join Date: Apr 2011
Location: sw Washington (state), a little north of Vancouver
Posts: 1,142
Thanks: 295
Thanked 111 Times in 82 Posts
reduce/or eliminate side mirrors as per legal in your state.
__________________
06 Chev MonteC JG#24tribute car 30mpg 00 Honda Insight 63MPG 98 Buick Park Ave3.8 33MPG 89 Toyota Corolla wag 53MPG so far 81 VW Rabbit diesel pu 50MPG+ 80 Mercedes 240D stick 30-ish 90 vette 6-speed,29ish 07 Honda ST1300 55MPG 83 Honda 650 GL 64MPG 19 Suzuki dr200 88MPG23 HondaGrom?+Tow K10D Sub 26mpg NEVER,NEVER GIVE UP!
PUMP THOSE TIRES UP!
DRIVE IN YOUR SOCKS FOR SENSITIVITY!!!!!!!!!!!!!!!
SLOW DOWN AND SMOOTH UP!!!!!!!!!!!!!!!!!!!!!!!!!!!!![SIGPIC]
  Reply With Quote
The Following User Says Thank You to larrybuck For This Useful Post:
mcrews (02-28-2012)
Old 02-28-2012, 08:45 PM   #3 (permalink)
Master EcoModder
 
Sven7's Avatar
 
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
Thanks: 782
Thanked 668 Times in 410 Posts
^^^right
Full belly pan, perhaps aluminum.
Wheel covers
front wheel skirts or partial skirts to fill the gaps
Exterior grille block

Kammback will help too. The spoiler on now probably isn't doing anything. You'd want one that sticks up far enough to hit the template.

__________________
He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
  Reply With Quote
The Following User Says Thank You to Sven7 For This Useful Post:
mcrews (02-28-2012)
Old 02-28-2012, 08:56 PM   #4 (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
Knowing you are concerned about the appearance of the car, I'd suggest the spoiler. For better effectiveness, though, I'd suggest the Kammback.
__________________


  Reply With Quote
The Following User Says Thank You to Frank Lee For This Useful Post:
mcrews (02-28-2012)
Old 02-28-2012, 09:21 PM   #5 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 663 Times in 478 Posts
Quote:
Originally Posted by larrybuck View Post
reduce/or eliminate side mirrors as per legal in your state.
Larry,
since I'm going for the kammback I dont want to eliminate the side mirrors or make 'non-factory' looking changes.

I have concidered some type of covering that would flair into the mirror.
I had gotten carried away one nite......
Thought about using fiberglass to mold something the would flow the air around it.


__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
  Reply With Quote
Old 02-28-2012, 09:28 PM   #6 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 663 Times in 478 Posts
[QUOTE=Sven7;289960]^^^right
Full belly pan, perhaps aluminum.
Wheel covers
front wheel skirts or partial skirts to fill the gaps
Exterior grille block

Kammback will help too. The spoiler on now probably isn't doing anything. You'd want one that sticks up far enough to hit the template.

QUOTE]

Sven,
Thank you for the template layover!
I already have the front and rear pans.
I had removed the middle section and there was no decernable difference.
I am going to really look hard at the wheel covers on the front.
I just havent figured uot how two make the front partial skirt look 'proffesional enough'
I have tested the grill cover on front and back, no noticeable difference.
__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
  Reply With Quote
Old 02-28-2012, 09:41 PM   #7 (permalink)
Master EcoModder
 
Sven7's Avatar
 
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
Thanks: 782
Thanked 668 Times in 410 Posts
Honestly, some moon covers on the wheels would look really good with that silver paint. I'd be happy to Photoshop them on if you like.

With some fiberglass fabbing you could have an OE-looking mirror delete panel.

An air dam up front probably won't be noticeable if it's behind the painted lip. On my Rabbit I mounted the front license plate under the bumper at a 45* angle and actually had people ask me if I had a front plate at all. It's amazing what people will miss, especially when they're standing right next to it looking down. In all likelyhood no one will notice a black air dam.
__________________
He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store

Last edited by Sven7; 02-28-2012 at 09:47 PM..
  Reply With Quote
Old 02-28-2012, 10:19 PM   #8 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 663 Times in 478 Posts
I'm going to give the clear wheel covers one more shot.

http://ecomodder.com/forum/showthrea...5-11656-4.html

Zipties ar the way to go.
Vekke, I'd order some plugs but $$ is tight. I'm moving my daughter to texas at the same time.
__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
  Reply With Quote
Old 02-28-2012, 10:46 PM   #9 (permalink)
Master EcoModder
 
mcrews's Avatar
 
Join Date: Oct 2009
Location: Texas
Posts: 3,523

The Q Sold - '02 Infiniti Q45 Sport
90 day: 23.08 mpg (US)

blackie - '14 nissan altima sv
Thanks: 2,203
Thanked 663 Times in 478 Posts
I took the overlayed pic and figured that it is 5inches from the top of the spoiler to the bottom of the kammback.



I have a small lip spoiler on the top of the window. I can use that as the anchor point for the top.
I'm thinking of using some polycarb and using a heat gun to curve the corners. Then fit the edges of the polycarb with some foam so that the kammback seals to the body.
I would probably build an aluminuum L bar frame that would have holes in it to hook small bungee straps to.
That way I could use the trunk and easily set the kammback on and off

__________________
MetroMPG: "Get the MPG gauge - it turns driving into a fuel & money saving game."

ECO MODS PERFORMED:
First: ScangaugeII
http://ecomodder.com/forum/showthrea...eii-23306.html

Second: Grille Block
http://ecomodder.com/forum/showthrea...e-10912-2.html

Third: Full underbelly pan
http://ecomodder.com/forum/showthrea...q45-11402.html

Fourth: rear skirts and 30.4mpg on trip!
http://ecomodder.com/forum/showthrea...tml#post247938
  Reply With Quote
Old 02-29-2012, 01:16 AM   #10 (permalink)
Master EcoModder
 
Join Date: Oct 2011
Location: Los Angeles
Posts: 588

Ladogaboy - '11 Mitsubishi Lancer EVO GSR
Team Emperor
90 day: 27.64 mpg (US)

E85 EVO - '11 Mitsubishi Lancer EVO GSR
90 day: 21.38 mpg (US)
Thanks: 59
Thanked 59 Times in 47 Posts
I'm curious... nitro?

__________________
  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