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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-11-2017, 06:42 PM   #31 (permalink)
Grand Imperial Poobah
 
Shepherd777's Avatar
 
Join Date: Aug 2011
Location: Newington, CT USA
Posts: 233
Thanks: 28
Thanked 445 Times in 132 Posts
Quote:
Originally Posted by freebeard View Post
Now, if you could do something about the frontal area....
Yeah, I hear you. But us truckers are all stuck with dragging a rectangular box, 13'6" high and 102" wide that people want to put freight inside.

__________________
Bob Sliwa
"Like a Midget at a Urinal, I knew I was gonna have to stay on my toes......."

http://www.airflowtruck.com
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-11-2017, 07:39 PM   #32 (permalink)
EcoModding Lurker
 
grins2go_brett's Avatar
 
Join Date: Jul 2011
Location: Tempe, AZ
Posts: 20
Thanks: 2
Thanked 5 Times in 4 Posts
Wish I had more pull at the Arizona Trucking Association for you. But alas, I am the photographer who works with them once a year for a 3 day conference. So my influence is very low. I would love for you to be able to get your truck (when it's completed) in front of the companies out here...especially Swift and Knight.
  Reply With Quote
Old 10-11-2017, 09:34 PM   #33 (permalink)
Master Novice
 
elhigh's Avatar
 
Join Date: Jan 2008
Location: SE USA - East Tennessee
Posts: 2,120

Josie - '87 Toyota Pickup
90 day: 29.48 mpg (US)

Tiptoe - '03 Honda Civic Hybrid
Team Honda
90 day: 48.9 mpg (US)

Felicia - '09 Toyota Prius Base
90 day: 47.88 mpg (US)
Thanks: 355
Thanked 509 Times in 372 Posts
Quote:
Originally Posted by Shepherd777 View Post
We had an aerodynamicist from Honda R&D in Torrence, CA do CFD simulations of the complete truck, and the final version came out to 0.25 Cd, believe it or not.
0.25!

Hot damn!
__________________




Take it easy
  Reply With Quote
Old 10-12-2017, 12:02 PM   #34 (permalink)
Grand Imperial Poobah
 
Shepherd777's Avatar
 
Join Date: Aug 2011
Location: Newington, CT USA
Posts: 233
Thanks: 28
Thanked 445 Times in 132 Posts
Quote:
Originally Posted by grins2go_brett View Post
Wish I had more pull at the Arizona Trucking Association for you. But alas, I am the photographer who works with them once a year for a 3 day conference. So my influence is very low. I would love for you to be able to get your truck (when it's completed) in front of the companies out here...especially Swift and Knight.
Thanks, but that's not necessary. We'll be at all of the shows next year and all of the carriers will see it. And by virtue of my build customer, we'll have extensive worldwide press and exposure.
__________________
Bob Sliwa
"Like a Midget at a Urinal, I knew I was gonna have to stay on my toes......."

http://www.airflowtruck.com
  Reply With Quote
The Following User Says Thank You to Shepherd777 For This Useful Post:
BamZipPow (10-26-2017)
Old 10-25-2017, 11:58 AM   #35 (permalink)
EcoModding Lurker
 
Join Date: Oct 2008
Location: florida
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
All that work on the front and side skirts. I wonder what they did on the back?
  Reply With Quote
Old 10-25-2017, 12:54 PM   #36 (permalink)
EcoModding Lurker
 
Join Date: May 2016
Location: Colorado
Posts: 78
Thanks: 5
Thanked 15 Times in 15 Posts
What kind of mileage improvement do you expect from a conventional setup? I have no idea what these things can get on a long haul.
  Reply With Quote
Old 10-25-2017, 04:38 PM   #37 (permalink)
EcoModding Lurker
 
Join Date: May 2012
Location: Ohio
Posts: 8

Ol' Blue - '94 Dodge Ram 2500 SLT
Thanks: 0
Thanked 4 Times in 2 Posts
Quote:
Originally Posted by Shepherd777 View Post
The rear of cab to trailer is an active aerodynamic, pneumatic mechanical origami-type device that articulates. It is constructed from aluminum tubes and sheet aluminum panels. It keys off a signal in our custom digital dash to deploy at 45 mph and it stows at 40 mph so the tractor and trailer can articulate. So at any speed below 40 mph, we have the standard gap between the tractor and the trailer. At 45 mph and above, it closes that gap.

Yes, it would work with a standard trailer as the device is cab-mounted. But a standard trailer with the StarShip tractor would just be a waste of fuel.

.
CAN you make the rear of cab / front of trailer curved like a ball & socket joint? That way it can turn left or right with minimal flow interruptions & no crunch points.
Make the back of the cab half-a-ball shaped, & the matching socket curvature at the front of the trailer. Or I guess you could make it the other way as well

Last edited by Smitty; 10-25-2017 at 10:17 PM..
  Reply With Quote
Old 10-25-2017, 08:09 PM   #38 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2009
Location: idaho
Posts: 209
Thanks: 0
Thanked 65 Times in 49 Posts
Quote:
Originally Posted by rmay635703 View Post
Now you need to apply your tech to diesel motor homes
Look up the 1990-1996 Navette motorhome. Only a few were built. One is a one of a kind on a Ford chassis (instead of the Isuzu the rest used), built special to haul the Kellogs Tony the Tiger hot air balloon.

Why they stopped production is the guy building them got cancer. He survived that but didn't restart production. Last I heard, he was wanting to sell all the tooling, parts on hand plus one complete Navette. The design would of course need to be adapted to a new chassis.

Wouldn't need a single thing changed on the exterior to look like it's from 2020. 'Course something current would have to be adapted for the headlights.

navette [Tin Can Tourists Wiki]

1996 Navette Custom Built - TOY HAULER
  Reply With Quote
Old 10-25-2017, 10:07 PM   #39 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 9,088
Thanks: 1,970
Thanked 2,955 Times in 2,310 Posts
Twenty-year-old tooling and fabrication? One could probably do better stating over.

The Vixen had a BMW turbo-diesel.
  Reply With Quote
Old 10-26-2017, 09:30 PM   #40 (permalink)
EcoModding Apprentice
 
Join Date: Jul 2009
Location: idaho
Posts: 209
Thanks: 0
Thanked 65 Times in 49 Posts
The Vixen is older and not as slick as the Navette. The great granddaddy of aero RVs is the GMC. Unfortunately those still ended up with plenty of 'warts' poking out where General motors didn't use parts custom designed to be low drag.

  Reply With Quote
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