EcoModder.com

EcoModder.com (https://ecomodder.com/forum/)
-   Aerodynamics (https://ecomodder.com/forum/aerodynamics.html)
-   -   Aero version of a Metro (https://ecomodder.com/forum/showthread.php/aero-version-metro-37796.html)

modified metro 08-28-2019 09:40 AM

Aero version of a Metro
 
1 Attachment(s)
Looking at the changes in the drawings of the stock metro verses the more aero design, do you seen something that would not be good for reducing drag?

Attachment 26772

aerohead 08-28-2019 12:30 PM

not be good
 
The only thing I'd mention would be the angle of the diffuser.You may need it to be that steep to protect it from ground strikes,while rolling up or down driveway ramps.If not,lowering it might cut drag a bit more.4-degrees is the maximum for a 'short' diffuser.2.8-degrees for 'long.'

me and my metro 08-28-2019 12:34 PM

1 Attachment(s)
Check out the Dolphin by Dave Cloud. Search on this site, I have seen this car in the Seattle area. It is very slick.

Ecky 08-28-2019 12:53 PM

This is an aerometro ;)

https://i.imgur.com/Nx6xeUSl.jpg


Just eyeballing it, I would say the slope in the back of the car is too steep to keep attachment and may actually cause more turbulence than stock.

Daox 08-28-2019 01:00 PM

1 Attachment(s)
We have a tool on the site to help you create the ideal aerodynamic shape. You can upload your image and try it here.

https://ecomodder.com/forum/tool-aero-template.php

I did yours real quick, but your tires aren't horizontal. That'll effect things a little bit.

https://ecomodder.com/forum/attachme...1&d=1567008020

modified metro 08-28-2019 06:06 PM

Quote:

Originally Posted by me and my metro (Post 605531)
Check out the Dolphin by Dave Cloud. Search on this site, I have seen this car in the Seattle area. It is very slick.

I have seen that car before. Quite impressive.

modified metro 08-28-2019 06:11 PM

Quote:

Originally Posted by Daox (Post 605538)
We have a tool on the site to help you create the ideal aerodynamic shape. You can upload your image and try it here.

https://ecomodder.com/forum/tool-aero-template.php

I did yours real quick, but your tires aren't horizontal. That'll effect things a little bit.

https://ecomodder.com/forum/attachme...1&d=1567008020

Does the tool take fineness ratio into account?

mpg_numbers_guy 08-28-2019 06:31 PM

Quote:

Originally Posted by me and my metro (Post 605531)
Check out the Dolphin by Dave Cloud. Search on this site, I have seen this car in the Seattle area. It is very slick.

Is it still running? Or was this a while ago? I've seen pictures of it floating around but I just read the threads on it today. Pretty darn cool build; it mainly just needed was lithium batteries for far less weight. Regenerative braking and lighter wheels would've been a plus too, but overall for the cost it's pretty good. Bodywork is quite good from the pics as well.

freebeard 08-31-2019 12:12 AM

Quote:

Does the tool take fineness ratio into account?
Yes, but....

If you look at The Template from fore-and-aft it's an half-circular arc. Your Metro is not.

Two things that might make for a better fit, Mair and the superellipse.

https://ecomodder.com/forum/member-f...1215134663.jpg
This is for a torpedo body. Start with a straight tail at 44-45 and find a nice radius curve; then truncate as necessary.

https://ecomodder.com/forum/member-f...perellipse.jpg
https://ecomodder.com/forum/showthre...ion-23333.html


All times are GMT -4. The time now is 08:05 PM.

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