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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 04-03-2020, 01:52 PM   #191 (permalink)
Master EcoModder
 
Join Date: Jul 2015
Location: Louisiana
Posts: 360
Thanks: 275
Thanked 132 Times in 102 Posts
Yeah, it seems Air Tabs don't work on aerodynamic cars according to the video. However, the video does cite a study which gives credence to their benefit on heavy 18-wheelers, which probably is the main use they are marketed to.

__________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 04-03-2020, 03:19 PM   #192 (permalink)
Master EcoModder
 
Join Date: May 2019
Location: California
Posts: 512

2020 - '08 Chevy Tahoe H
Last 3: 18.4 mpg (US)

2021 - '08 Chevy Tahoe H
90 day: 17.08 mpg (US)

2022 - '08 chevy Tahoe LT
Last 3: 14.38 mpg (US)

2023 - '08 Chevy Tahoe
90 day: 25.57 mpg (US)
Thanks: 2
Thanked 105 Times in 96 Posts
Quote:
Originally Posted by Gasoline Fumes View Post
But they might be taller!!!
the tires warp at 32psi that could cause aero drag and a blow out lol
  Reply With Quote
Old 04-03-2020, 03:59 PM   #193 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,547
Thanks: 7,731
Thanked 8,546 Times in 7,035 Posts
Quote:
the tires warp at 32psi that could cause aero drag and a blow out lol
Not getting the joke.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

I love the smell of irony in the morning -- Elon Musk
  Reply With Quote
Old 04-03-2020, 07:40 PM   #194 (permalink)
Banned
 
Join Date: Nov 2017
Location: Australia
Posts: 2,060
Thanks: 107
Thanked 1,605 Times in 1,136 Posts
Quote:
Originally Posted by MeteorGray View Post
Yeah, it seems Air Tabs don't work on aerodynamic cars according to the video. However, the video does cite a study which gives credence to their benefit on heavy 18-wheelers, which probably is the main use they are marketed to.
That is not a very good summary of the video.

1) on some trucks they don't work

2) they can work very well on aerodynamic cars, if used correctly
  Reply With Quote
The Following 3 Users Say Thank You to JulianEdgar For This Useful Post:
aerohead (04-08-2020), BamZipPow (04-04-2020), freebeard (04-03-2020)
Old 04-03-2020, 10:15 PM   #195 (permalink)
Master EcoModder
 
Join Date: May 2019
Location: California
Posts: 512

2020 - '08 Chevy Tahoe H
Last 3: 18.4 mpg (US)

2021 - '08 Chevy Tahoe H
90 day: 17.08 mpg (US)

2022 - '08 chevy Tahoe LT
Last 3: 14.38 mpg (US)

2023 - '08 Chevy Tahoe
90 day: 25.57 mpg (US)
Thanks: 2
Thanked 105 Times in 96 Posts
Quote:
Originally Posted by freebeard View Post
Not getting the joke.
when the air pressure is low, the tires they will have flex in the sidewalls outward compared to the top half of the tire which would cause turbulence ..


some vehicles the tire sitting outside of the wheelwell which would increase the aero drag as well



this is a tire in motion

  Reply With Quote
The Following User Says Thank You to Tahoe_Hybrid For This Useful Post:
BamZipPow (04-04-2020)
Old 04-03-2020, 10:55 PM   #196 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,547
Thanks: 7,731
Thanked 8,546 Times in 7,035 Posts
Okay, I get it, I guess.

The pooched-out sidewall is motionless [unless drifting], while the top is moving at 2x the vehicles velocity.

Also much of the turbulence is sideward at ground level as the tread presses the air into the ground. I don't see much solution for that.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

I love the smell of irony in the morning -- Elon Musk
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
COcyclist (04-07-2020)
Old 04-06-2020, 04:15 AM   #197 (permalink)
Banned
 
Join Date: Nov 2017
Location: Australia
Posts: 2,060
Thanks: 107
Thanked 1,605 Times in 1,136 Posts
My guess on aero cars of the future

https://youtu.be/1GueDnf-bWQ
  Reply With Quote
The Following 2 Users Say Thank You to JulianEdgar For This Useful Post:
aerohead (04-08-2020), freebeard (04-06-2020)
Old 04-08-2020, 12:37 PM   #198 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,852
Thanks: 23,907
Thanked 7,199 Times in 4,637 Posts
video

Thanks Julian! A thoughtful presentation,and compact enough not to lose an Americans' brief attention span.
I hope for a few more years just to see what trends emerge.Thanks again.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following User Says Thank You to aerohead For This Useful Post:
JulianEdgar (04-10-2020)
Old 04-10-2020, 02:54 AM   #199 (permalink)
Banned
 
Join Date: Nov 2017
Location: Australia
Posts: 2,060
Thanks: 107
Thanked 1,605 Times in 1,136 Posts
Measuring the thickness of boundary layers - https://youtu.be/vGwyAQdS1z0

Cheap and easy!
  Reply With Quote
The Following 2 Users Say Thank You to JulianEdgar For This Useful Post:
aerohead (04-10-2020), freebeard (04-10-2020)
Old 04-10-2020, 04:00 AM   #200 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,547
Thanks: 7,731
Thanked 8,546 Times in 7,035 Posts
Interesting to use repurposed model airplane parts.

It looks like some sort of articulated mount would save a lot of starting and stopping.

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________

I love the smell of irony in the morning -- Elon Musk
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
Xist (04-19-2020)
Reply  Post New Thread


Thread Tools




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