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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-22-2020, 03:42 PM   #1 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 987

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)
Thanks: 173
Thanked 507 Times in 221 Posts
Aerodynamically optimized car hubcap

Hi,

I am designing my own hubcap (again ) model with normal fastening method with the steel metal ring...
https://youtu.be/X9s3MwhDZMo

What do you think of the design and would you buy it for 40€ or $ per set of 4 wheelcovers?
Would you be interested to make preorder at some price?
What you think about the design?

The other model you see on the video has the smallest holes I have found if you do not count the steel mooneys which dont have any holes.

These will lower yours cars drag coefficient 0.015-0.028 units is my estimation based on aerodynamic studies others have made on the same topic.

If many people are intersted I will make a separate thread to the For sale section. At the moment this is just about playing the idea how aerodynamic wheels should look like and be.

I am also thinking the other fastening methods, but the design would still look pretty much the same.

Sorry about the colors on the video its still a prototype and I am trying to figure out is there any sense to make the investment which will be quite big.

__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
The Following User Says Thank You to Vekke For This Useful Post:
Flakbadger (03-22-2020)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-22-2020, 08:00 PM   #2 (permalink)
Master EcoModder
 
Ecky's Avatar
 
Join Date: Dec 2011
Location: Vermont
Posts: 3,753

Gaptooth (retired) - '00 Honda Insight
Team Honda
Gen-1 Insights
90 day: 54.26 mpg (US)

Such Fit - '07 Honda Fit Sport
90 day: 41.27 mpg (US)

Connect - '15 Ford Transit Connect XL
90 day: 20.08 mpg (US)

K-sight - '00 Honda K-sight
90 day: 38.29 mpg (US)
Thanks: 1,477
Thanked 1,575 Times in 994 Posts
Two of most aerodynamic cars are the Honda Insight and VW XL-1. Their wheels are basically smooth discs with small vents at the edges for brake cooling. I feel a hubcap of similar design would be pretty effective.



Forum member vman455 took this picture:



I don't personally need and hubcaps, as all of my vehicles have alloy wheels already. I'd put a set on my work van but I don't know if my boss would go for it.
  Reply With Quote
Old 03-23-2020, 12:44 AM   #3 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 15,230
Thanks: 3,852
Thanked 5,077 Times in 4,043 Posts
Quote:
What do you think of the design and would you buy it for 40€ or $ per set of 4 wheelcovers?
Would you be interested to make preorder at some price?
The price sounds good but the shipping would kill the deal.
Quote:
What you think about the design?
Too angular for my taste (sorry). The ecomodder green might be hard to match to some paint schemes.

How do you propose to fabricate them? Vacuum-form? 3D printed?

The air slots are buried in grooves. I don't think they'd move much air.
__________________
.
Gold is the money of kings
Silver is the money of gentlemen
Barter is the money of peasants
—but debt is the money of slaves
Norm Franz

_________________
  Reply With Quote
Old 03-23-2020, 12:21 PM   #4 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 987

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)
Thanks: 173
Thanked 507 Times in 221 Posts
Which style do you like most? Press the like button you like most. You can also make your own color theme if you have better eye for colors than me .
__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
The Following User Says Thank You to Vekke For This Useful Post:
19bonestock88 (03-24-2020)
Old 03-23-2020, 12:21 PM   #5 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 987

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)
Thanks: 173
Thanked 507 Times in 221 Posts
__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
Old 03-23-2020, 12:23 PM   #6 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 987

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)
Thanks: 173
Thanked 507 Times in 221 Posts
__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
Old 03-23-2020, 12:27 PM   #7 (permalink)
Mechanical engineer
 
Vekke's Avatar
 
Join Date: Jan 2009
Location: Kitee (Finland)
Posts: 987

Siitin - '98 Seat Cordoba Vario
90 day: 58.56 mpg (US)

VW Lupo 3L --> 2L - '00 VolksWagen Lupo 3L
Diesel
90 day: 104.94 mpg (US)

A8 luxury fuel sipper - '97 Audi A8 1.2 TDI 6 speed manual
90 day: 64.64 mpg (US)

Audi A4B6 Avant Niistäjä - '02 Audi A4b6 1.9tdi 96kW 3L
90 day: 54.57 mpg (US)

Tourekki - '04 VW Touareg 2.5TDI R5 6 speed manual
90 day: 32.98 mpg (US)

A2 1.4TDI - '03 Audi A2 1.4 TDI
90 day: 45.68 mpg (US)
Thanks: 173
Thanked 507 Times in 221 Posts
Air slots will work like normal fan pushing the air out of the wheelwell. I know its not big fan, but the need for brake cooling is not that big in normal driving.

The pressure zones will also increase the air flow.

Manufacturing will be plastic injection. I will search if vacuum forming would be possible but it has some sharp corners which are not easy for vacuum forming. Also price wise the vacuum forming migth be too expensive.
__________________


https://www.linkedin.com/in/vesatiainen/

Vesa Tiainen innovation engineer and automotive enthusiast
  Reply With Quote
The Following User Says Thank You to Vekke For This Useful Post:
freebeard (03-23-2020)
Old 03-24-2020, 05:43 PM   #8 (permalink)
EcoModding Apprentice
 
Join Date: Sep 2012
Location: Motor City
Posts: 246
Thanks: 0
Thanked 172 Times in 111 Posts
If I had a car that used hubcaps (I haven't in years, like most Americans) and I needed some hubcaps, I'd just hit the junkyard. There have been some decently flat ones used over the years.

Used a set of these 90's Ford hubcaps on a trailer for a while. I think they'd be decent.

And I think your 5% fuel economy projection is pretty optimistic. .015 Cd improvement seems possible, that'd be a 5% aero improvement on a car with a Cd of .3, but that would net about 2.5% economy improvement.

(2.5% is inline with what the Tesla Model 3 folks say their aero hubcaps are worth, and they were designed in a wind tunnel.)

Attached Thumbnails
Click image for larger version

Name:	s-l500.jpg
Views:	7
Size:	28.3 KB
ID:	27753  
  Reply With Quote
Reply  Post New Thread


Tags
aerodynamic, fuelsaving, hubcap, wheelcover

Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com