Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-01-2019, 03:23 PM   #11 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 12,898
Thanks: 3,129
Thanked 4,239 Times in 3,365 Posts
Coroplast? Brake it at an angle to the corrugations to stiffen it.

__________________
.
...in flight training we have a saying: You need to learn from the mistakes of others kid you're not going to live long enough to make them all yourself.
Bill Whittle

_________________
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-02-2019, 04:40 PM   #12 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 645
Thanks: 18
Thanked 135 Times in 121 Posts
I'm thinking of adding a "Belly Pan" to the trailer (Something light, like Formica) to keep the airflow from hitting the frame cross members. Also, surrounding the axle with an air foil (Red Oval)
Attached Thumbnails
Click image for larger version

Name:	AAAAAA.JPG
Views:	7
Size:	33.5 KB
ID:	25818  
  Reply With Quote
Old 05-02-2019, 06:50 PM   #13 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 12,898
Thanks: 3,129
Thanked 4,239 Times in 3,365 Posts
Give the air foil a negative camber to keep the wheels on the ground at speed.

1/8" sheet ABS could be heat-formed, Formica not so much.
__________________
.
...in flight training we have a saying: You need to learn from the mistakes of others kid you're not going to live long enough to make them all yourself.
Bill Whittle

_________________
  Reply With Quote
Old 05-02-2019, 07:36 PM   #14 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 645
Thanks: 18
Thanked 135 Times in 121 Posts
Quote:
Originally Posted by freebeard View Post
Give the air foil a negative camber to keep the wheels on the ground at speed.
Yes. I just did a quick dirty job with Paint XP. I know the rear of the air foil needs to be tapered to a point, and the profile needs to be more like an airplane wing.

I like the idea of wheel pods.

Quote:
Originally Posted by freebeard View Post
1/8" sheet ABS could be heat-formed, Formica not so much.
Yeah, the Formica, or whatever, belly pan only needs to be flat. I thought of dropping it down in the middle to under the axle, but I think that extra frontal area would cause a higher CDA than just sealing the frame, and using an airfoil on the axle.

Do you think these additions are aerodynamically advantageous, or to much trouble for the return?
  Reply With Quote
Old 05-02-2019, 08:24 PM   #15 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 12,898
Thanks: 3,129
Thanked 4,239 Times in 3,365 Posts
I'd not cover the axle, but radius the edges and cover the bottom half of the carrier up to the clamshell lip.

The wheel pants need to open up for access. Either Dzus fasteners, and a hinge at the top or pivot at the front to butterfly open.
__________________
.
...in flight training we have a saying: You need to learn from the mistakes of others kid you're not going to live long enough to make them all yourself.
Bill Whittle

_________________
  Reply With Quote
Old 05-02-2019, 08:55 PM   #16 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 645
Thanks: 18
Thanked 135 Times in 121 Posts
Quote:
Originally Posted by freebeard View Post
I'd not cover the axle, but radius the edges .
Like this?
Attached Thumbnails
Click image for larger version

Name:	Axle.JPG
Views:	7
Size:	15.0 KB
ID:	25820  
  Reply With Quote
Old 05-02-2019, 10:50 PM   #17 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 645
Thanks: 18
Thanked 135 Times in 121 Posts
Quote:
Originally Posted by freebeard View Post
cover the bottom half of the carrier up to the clamshell lip.
Actually, I was thinking of filling the gap with a triangular box, with the apex just behind the coupler.
Attached Thumbnails
Click image for larger version

Name:	With Gap Filler.JPG
Views:	5
Size:	34.9 KB
ID:	25821  
  Reply With Quote
Old 05-03-2019, 02:03 AM   #18 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 645
Thanks: 18
Thanked 135 Times in 121 Posts
I think I could make this pretty easy:
Attached Thumbnails
Click image for larger version

Name:	AXLE SHROUD.JPG
Views:	6
Size:	43.7 KB
ID:	25822  
  Reply With Quote
Old 05-03-2019, 11:27 AM   #19 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 12,898
Thanks: 3,129
Thanked 4,239 Times in 3,365 Posts
Quote:
Originally Posted by myself
I'd not cover the axle, but radius the edges and to cover the bottom half of the carrier up to the clamshell lip.
Edges of the frame not the axle.
__________________
.
...in flight training we have a saying: You need to learn from the mistakes of others kid you're not going to live long enough to make them all yourself.
Bill Whittle

_________________
  Reply With Quote
Old 05-03-2019, 12:09 PM   #20 (permalink)
Master EcoModder
 
Join Date: Nov 2013
Location: Texas
Posts: 645
Thanks: 18
Thanked 135 Times in 121 Posts
Is this getting closer? Do you not think the 1.25" axle needs rounding pieces?

Attached Thumbnails
Click image for larger version

Name:	AAAAAA ROUNDED.JPG
Views:	6
Size:	47.2 KB
ID:	25828  
  Reply With Quote
The Following User Says Thank You to Angel And The Wolf For This Useful Post:
freebeard (05-03-2019)
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com