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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-19-2017, 12:39 PM   #1 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,699

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,926 Times in 2,477 Posts
Writer seeking examples of tested DIY aero mods for book

Julian Edgar, former editor of Autospeed (which many here probably visited regularly), is writing a book about road vehicle aerodynamics.

Quote:
I am writing a major book on modifying road car aerodynamics. I have organised one of the top aerodynamicists in the UK to act as my technical consultant.

It will be a big book so there is plenty of room for lots of examples. I am after examples to feature of home-based road car aerodynamic modifications, where there is data available that they work (eg reduced fuel consumption, wool tuft pics of the improved flows, etc).
Please post your own threads of tested mods, or nominate others.

Julian said he may also want to get in touch with individual modders via e-mail.

__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 3 Users Say Thank You to MetroMPG For This Useful Post:
BamZipPow (11-19-2017), Daox (11-19-2017), oldtamiyaphile (11-23-2017)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 11-19-2017, 12:48 PM   #2 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,699

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,926 Times in 2,477 Posts
me me me



MetroMPG's Honda Insight boat tail extension (cardboard) tuft video; ABA test +9.7%



2014 Mirage aeromods A-B test: grille block, mini-Kammback, air dam, mirrors, 1 wiper



7 aeromods + tire pressure = 11.6% gain at 90 kph (56 mph): 2015 Nissan Micra 5-spd



Massive air dam on '98 Geo Metro (Firefly), A-B-A coastdown test; Update: version 2
(Coastdown test results in post #29 of that thread)
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 2 Users Say Thank You to MetroMPG For This Useful Post:
BamZipPow (11-19-2017), mcrews (11-21-2017)
Old 11-19-2017, 12:52 PM   #3 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,699

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,926 Times in 2,477 Posts


Minivan Kardboard Kammback boosts MPG +3.7% (6.6%, counting roof rack delete)

Not all tests show measurable gains, and may underline the difficulty of testing very small changes:



Tested: vortex generators (AirTabs) on a Toyota Corolla

See also: Tested: Airtabs on a mini van, A-B-A - no measurable effect
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following User Says Thank You to MetroMPG For This Useful Post:
BamZipPow (11-19-2017)
Old 11-19-2017, 12:59 PM   #4 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,699

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,926 Times in 2,477 Posts


Partial Kammback prototype tested - preliminary results



Reflections on side mirrors: testing drag vs. MPG





Testing grille blocking & wheel skirts: +5.7% improvement
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 2 Users Say Thank You to MetroMPG For This Useful Post:
BamZipPow (11-19-2017), mcrews (11-21-2017)
Old 11-19-2017, 01:04 PM   #5 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,699

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,926 Times in 2,477 Posts
scattershot

This one's maybe less useful because it's an "all-in-one" test that incorporates a number of non-aero mods, though the majority of the gains are likely from drag-reduction.



15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following User Says Thank You to MetroMPG For This Useful Post:
BamZipPow (11-19-2017)
Old 11-19-2017, 01:16 PM   #6 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,699

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,926 Times in 2,477 Posts


CivicTail project: ginormous aerodynamic tail on '07 Civic sedan
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
The Following 2 Users Say Thank You to MetroMPG For This Useful Post:
BamZipPow (11-19-2017), mcrews (11-21-2017)
Old 11-19-2017, 01:22 PM   #7 (permalink)
Ecomuggler
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Mesa, AZ
Posts: 5,484

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 40.43 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 33.68 mpg (US)
Thanks: 3,288
Thanked 920 Times in 689 Posts
Is a wind tunnel good enough?
  Reply With Quote
The Following User Says Thank You to Xist For This Useful Post:
mcrews (11-21-2017)
Old 11-19-2017, 04:51 PM   #8 (permalink)
EcoModding Lurker
 
Join Date: Nov 2017
Location: Australia
Posts: 9
Thanks: 0
Thanked 19 Times in 8 Posts
Thanks for the replies so far. As MetroMPG said, I am writing a book on home car aero modification. The book is quite large, and so I can use plenty of examples. It is being published by a UK publisher, but it will be distributed worldwide. At this stage it is looking like being 100,000 words and 350 pics.

As with any print publication, good quality pics are needed (ie typically at full res out of the camera, not at web resolution).

If you want to appear in the book, I'd suggest that you do the following:

1. Email me a couple of high res photos and a short description of what you've done, and how you tested the results. julianedgar1 at gmail.com

2. I'll get back to you to let you know if I am interested. (I hope I will be, but I might already have examples that cover the same ground, etc.)

3. I'll then ask you to write a more detailed description, or provide more pics, eg a step by step, or testing of different versions, etc

4. You will be mentioned by name in the book, as will EcoModder

If you have any questions, I am happy to answer them.
  Reply With Quote
The Following 5 Users Say Thank You to JulianEdgar For This Useful Post:
aerohead (11-25-2017), BamZipPow (11-19-2017), Daox (11-19-2017), elhigh (11-29-2017), oldtamiyaphile (11-23-2017)
Old 11-20-2017, 02:33 AM   #9 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 9,075
Thanks: 1,967
Thanked 2,948 Times in 2,305 Posts
I really appreciate the work you did at AutoSpeed over the years.

Why didn't you use EcoModder.com - View Profile: Julian Edgar instead of creating a new account?

I don't have any documented result, but I did observe at Darko wind tunnel last September when aerohead and gumby79 tested their pickup trucks, and aerohead's 1/3rd scale model.

Baby template car for DARKO 2016
__________________
Walk without rhythm and it won't attract the worm. --fatboy slim
_________________
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
Xist (11-20-2017)
Old 11-20-2017, 05:59 AM   #10 (permalink)
EcoModding Lurker
 
Join Date: Nov 2017
Location: Australia
Posts: 9
Thanks: 0
Thanked 19 Times in 8 Posts
It's an exciting book to write.

Jaguar's chief aerodynamicist has been very helpful with providing me with material. F1 aerodynamicist Willem Toet has been commenting on some paras, and my technical editor/consultant RH Barnard is just about to get the first chapter to give me feedback on.

These are the chapter headings:

Introduction
Chapter 1 Theory
Chapter 2 Aerodynamic vehicles
Chapter 3 Flow visualisation
Chapter 4 Pressure measurement
Chapter 5 Noise measurement
Chapter 6 Measuring drag and lift
Chapter 7 Reducing drag
Chapter 8 Reducing lift and increasing stability
Chapter 9 Improving flow through heat exchangers
Chapter 10 Engine intakes
Chapter 11 Reducing aerodynamic noise

As far as I know, it will be the only major aero book aimed at normal people modifying road cars.

  Reply With Quote
The Following 4 Users Say Thank You to JulianEdgar For This Useful Post:
aerohead (11-25-2017), BamZipPow (11-20-2017), California98Civic (11-23-2017), freebeard (11-20-2017)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com