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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-20-2010, 02:51 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Sep 2009
Location: us
Posts: 21

LegacyGT - '01 Subaru Legacy GT
90 day: 33.72 mpg (US)
Thanks: 1
Thanked 8 Times in 3 Posts
nissan leaf wipers

anyone see this thing? looks like some sort vortex generators just upstream of the wipers? function or perhaps just style?

Also appears to be set in a flat dish at the back of the hood instead of a rising cowl. I've seen this on some other cars although to a lesser extent there must be something to the design.

I just dont see how leaving the wipers exposed could be better?


  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-20-2010, 03:00 PM   #2 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,861
Thanks: 23,922
Thanked 7,207 Times in 4,640 Posts
exposed

Quote:
Originally Posted by majestic View Post
anyone see this thing? looks like some sort vortex generators just upstream of the wipers? function or perhaps just style?

Also appears to be set in a flat dish at the back of the hood instead of a rising cowl. I've seen this on some other cars although to a lesser extent there must be something to the design.

I just dont see how leaving the wipers exposed could be better?

windshield wipers can reside within a burble of air in the cowl area at the base of the windshield,offering no measurable drag.Nissan aero folks would be aware of such things and may have considered the exposed wipers a non issue.
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
NeilBlanchard (03-21-2010)
Old 03-20-2010, 07:12 PM   #3 (permalink)
Master EcoModder
 
Join Date: Dec 2009
Location: Lancaster Ca
Posts: 362

Tank - '76 Chevy El Camino Classic
90 day: 25.89 mpg (US)

Sabrina - '91 Mercedes Benz 190 E
90 day: 37.07 mpg (US)

Angel - '88 Mercedes-Benz 420SEL
Last 3: 23.01 mpg (US)

Quicksilver - '04 Mercedes-Benz CLK55 AMG Cabrio
Thanks: 52
Thanked 8 Times in 8 Posts
Um i agree but it's not gonna use any more gas from the drag It's Electric
__________________


Tank:
(No actual EPA numbers for car just used F/E numbers when i first got it)
  Reply With Quote
Old 03-20-2010, 07:25 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
I'm gonna say those bumps are pure styling, or they're hiding fasteners or something. Hard to say without seeing it in person. But I will say for sure they're not for aero.
__________________


  Reply With Quote
Old 03-20-2010, 10:38 PM   #5 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Madison AL
Posts: 1,123

The Geo - '93 Geo Metro
Team Metro
90 day: 45.16 mpg (US)
Thanks: 30
Thanked 40 Times in 37 Posts
Quote:
Originally Posted by Domman56 View Post
Um i agree but it's not gonna use any more gas from the drag It's Electric
What if you charge it with a gasoline generator? I think we understand that "gas"=fuel, be it hydrogen, electrons, dead babies, etc.
  Reply With Quote
Old 03-21-2010, 06:40 AM   #6 (permalink)
Master EcoModder
 
Join Date: Feb 2008
Location: belgium
Posts: 663

vectra a - '95 Opel Vectra GLS
90 day: 37.51 mpg (US)
Thanks: 14
Thanked 61 Times in 44 Posts
after looking at it in available photo's on line, i can't really see how they should help aero, they even appear to be lower in some pictures, making me wonder if the "ridge" look doesn't come from a reflection.

also the picture shows a break in the smooth line of the bodywork in front of the window as if they're delibirately trying to make the flow sepparate ahead of the windshield.
__________________
aer·o·dy·nam·ics: the science of passing gass

*i can coast for miles and miles and miles*
  Reply With Quote
Old 03-21-2010, 12:08 PM   #7 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: Earth
Posts: 5,209
Thanks: 225
Thanked 811 Times in 594 Posts
Quote:
Originally Posted by Domman56 View Post
Um i agree but it's not gonna use any more gas from the drag It's Electric
Well, duh! It's going to use more electric from the drag :-)
  Reply With Quote
Old 08-14-2010, 12:15 PM   #8 (permalink)
Master EcoModder
 
AeroModder's Avatar
 
Join Date: Jan 2010
Location: Oregon
Posts: 471

Tank - '96 Ford Aspire 4 door
Team Ford
90 day: 46.75 mpg (US)
Thanks: 15
Thanked 65 Times in 48 Posts
My fiancee asked me about putting an alternator on the electric motor to recharge it as you drive, but after realizing that the battery packs need far more power than the alternator can produce, I started wondering about combined recharging methods to further increase the range before the batteries drain.

Of course, you'd have the solar panel roof, but I was also thinking about using wind turbines to power small generators, and run the air behind the car to help fill the wake to a small degree.

It's no perpetual motion machine, but it could at least help you not plug it in as long and save or make a little more power, similar to the radiator duct of the P-51 Mustang.
__________________
In Reason we Trust
  Reply With Quote
Old 08-14-2010, 02:49 PM   #9 (permalink)
EcoModding Lurker
 
Join Date: Jun 2010
Location: Bottineau, ND
Posts: 49

Civics Lesson - '02 Honda Civic LX
90 day: 33.38 mpg (US)
Thanks: 6
Thanked 0 Times in 0 Posts
Maybe that's where the washer fluid comes out?
__________________
  Reply With Quote
Old 12-30-2010, 01:14 PM   #10 (permalink)
Cd
Ultimate Fail
 
Cd's Avatar
 
Join Date: Feb 2008
Location: Austin,Texas
Posts: 3,585
Thanks: 2,872
Thanked 1,121 Times in 679 Posts
Here is a link to a video that implies that those bumps have a function :



Skip to 10:39 where the guy talks about the aerodynamics of the car.

Point twenty nine Cd ??? And that is with a full smooth belly-pan.

Sad . Just sad.

I still don't buy that bit about the frog eye headlights being needed for wind noise.

Not only did the EV-1 not have them, but the Volt doesn't either...or the Tesla ... or the Fisker Karma.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Nissan Leaf TV Commercial! bennelson Fossil Fuel Free 11 07-11-2010 11:37 AM
Nissan Leaf @ Boston Science Museum - TODAY 9-3! NeilBlanchard Events & Meet-ups 7 02-09-2010 11:04 PM
Nissan Leaf, EV's are coming back! rgathright Fossil Fuel Free 15 01-21-2010 08:24 AM
WIRED in depth look (photos) at Nissan Leaf. Also: we'll be able to "coast" a Leaf MetroMPG Fossil Fuel Free 6 01-10-2010 01:38 PM
The Nissan Leaf - Another EV! SVOboy EcoModder Blog Discussion 0 08-05-2009 11:50 AM



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