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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-23-2012, 08:27 PM   #21 (permalink)
Master EcoModder
 
Join Date: Jan 2010
Location: Alberta Canada
Posts: 744

redyaris - '07 Toyota Yaris
Team Toyota
90 day: 45.54 mpg (US)

Gray - '07 Suzuki GS500 F
Motorcycle
90 day: 70.4 mpg (US)

streamliner1 - '83 Honda VT500 streamliner
Motorcycle
90 day: 75.63 mpg (US)

White Whale - '12 Sprinter 2500 Cargo Van
90 day: 22.01 mpg (US)
Thanks: 81
Thanked 67 Times in 60 Posts
My two bits says make the front fill in as much of the space/volume between the tailer and the truck as posible. the tail end of the trailer looks great.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-23-2012, 09:02 PM   #22 (permalink)
Master EcoModder
 
Sven7's Avatar
 
Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
Thanks: 782
Thanked 659 Times in 405 Posts
^^ I agree with yaris. You could gain a few "free" feet too.

The template is not placed correctly. The "ground" in the drawing should line up with the "ground" in real life. Correct that and it will look great!

Good luck on the build.
__________________
He gave me a dollar. A blood-soaked dollar.
I cannot get the spot out but it's okay; It still works in the store
  Reply With Quote
Old 02-23-2012, 11:05 PM   #23 (permalink)
Master EcoModder
 
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 1,766

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 815
Thanked 456 Times in 343 Posts
Tractor-Trailer gap is ideal at 24" or less. Above 30" is frowned upon.

Looks like fun, Ed. What "accommodations" will this trailer feature. That might help what-to-put-where and point a particular direction.

Have you a floorplan in mind? Or, interior wall-plan? I've seen some good give-and-take on AIR around these questions (exterior shape is given, but interior plans can go a very long way to using space).
__________________
2004.0 DODGE Ram QC/LB 2500 2WD/NV-5600 305/555 ISB. 7,940-lb. Stock. 200,000 miles/5000-hrs @ 40-mph average.
1990 35' Silver Streak TT 7,900-lb.
8-cpm solo & 11-cpm towing; 21-mpg average past 54k-miles
Sold: 1983 Silver Streak 3411
  Reply With Quote
Old 02-24-2012, 08:38 AM   #24 (permalink)
EcoModding Lurker
 
Ed-in-Maine's Avatar
 
Join Date: Feb 2012
Location: Maine
Posts: 69

Iceberg - '02 Ford F250 XLT
Pickups
90 day: 18.3 mpg (US)

Tool - '08 Toyota Matrix XR
Team Toyota
90 day: 43.15 mpg (US)
Thanks: 24
Thanked 17 Times in 7 Posts
slowmover-Not much to a floor plan in a 4'x11' area But yeah, the bed is forward the rear is a "chuck wagon" type area. I think I'll make the rear hinge up to an awning position to give my wife coverage when at the camp stove.

But with this extra volume dictated by aero considerations I'm thinking about a "garage" area for a bike(actually a "Catrike Trail"). I'm riding a Trident ST2 Trike from Maine to Washington state this spring/summer. My wife will SAG for me. We have tent camped always in the past but 90+ days of tenting is a little extreme for us. So this little trailer is just one step up from tent, but without all the fiddling that a standard Pop-up requires.
Ed
Attached Thumbnails
Click image for larger version

Name:	Teardrop HF 1947 side.jpg
Views:	237
Size:	57.1 KB
ID:	10337  

Last edited by Ed-in-Maine; 02-24-2012 at 08:46 AM..
  Reply With Quote
The Following User Says Thank You to Ed-in-Maine For This Useful Post:
Sven7 (02-24-2012)
Old 02-24-2012, 08:48 AM   #25 (permalink)
EcoModding Lurker
 
Ed-in-Maine's Avatar
 
Join Date: Feb 2012
Location: Maine
Posts: 69

Iceberg - '02 Ford F250 XLT
Pickups
90 day: 18.3 mpg (US)

Tool - '08 Toyota Matrix XR
Team Toyota
90 day: 43.15 mpg (US)
Thanks: 24
Thanked 17 Times in 7 Posts
Here is the newest top view. I can't upload too much on a single post.
Ed
Attached Thumbnails
Click image for larger version

Name:	Teardrop HF 1947 top.jpg
Views:	274
Size:	73.2 KB
ID:	10338  
  Reply With Quote
Old 02-24-2012, 09:40 AM   #26 (permalink)
Master EcoModder
 
skyking's Avatar
 
Join Date: Apr 2011
Location: Tacoma WA
Posts: 1,197

Woody - '96 Dodge Ram 2500 SLT
Team Cummins
90 day: 23.82 mpg (US)

Avion and Woody - '96 Dodge/Avion Ram 2500/5th wheel combo
90 day: 15.1 mpg (US)

TD eye eye eye - '03 Volkswagen Beetle GLS
90 day: 49.05 mpg (US)

Mule - '07 Dodge Ram 3500 ST
Thanks: 457
Thanked 440 Times in 280 Posts
Ed, I would make any nice aero shape you want so long as there are a minimum 2' tall straight sides on it, and then make it a two piece slider or pop-up. I have several ideas regarding hard sided pop-ups. No fiddling, no tent section, just slide it up or down in a hurry.
Stand up = momma happy
__________________




2007 Dodge Ram 3500 SRW 4x4 with 6MT
2003 TDI Beetle
2002 TDI Beetle

currently parked - 1996 Dodge 2500 Cummins Turbodiesel
Custom cab, auto, 3.55 gears
  Reply With Quote
Old 02-24-2012, 09:45 AM   #27 (permalink)
Recreation Engineer
 
KamperBob's Avatar
 
Join Date: Dec 2009
Location: Somewhere USA
Posts: 518

Black Stallion - '02 Toyota Tundra 4WD xCab

Half Pint - '06 Yamaha XT225
Thanks: 299
Thanked 133 Times in 100 Posts
Ed, those HF kit trailers are 4' wide, right? If you build the deck wider with wheel wells and skirts then you could increase the beam to match the tow vehicle (somewhere between 5 and 6 feet). Without any elbow room on the sides of the mattress you'd probably have to crawl over it. If offset to one side there might be enough isle to get past it. Think about where you want the door (assuming only one) how big it can/must be. That will constrain body geometry. Then I'd use the template to maximize interior space with least aero penalty.

More food for thought:

1. Airstream Basecamp



2. Frankenhauler: web page forum thread

3. Tiny toy hauler (Scamp hack): blog post
__________________
Recreation Engineer
  Reply With Quote
Old 02-24-2012, 10:46 AM   #28 (permalink)
EcoModding Lurker
 
Ed-in-Maine's Avatar
 
Join Date: Feb 2012
Location: Maine
Posts: 69

Iceberg - '02 Ford F250 XLT
Pickups
90 day: 18.3 mpg (US)

Tool - '08 Toyota Matrix XR
Team Toyota
90 day: 43.15 mpg (US)
Thanks: 24
Thanked 17 Times in 7 Posts
skyking- I would love to see those popup designs you have, don't know if I have the build time but it would be very interesting. Can you email them or post. Dry Bed that doesn't rock == momma happy We lived on sailboats for 5 years and my wifes first question is always "how are you going to keep the rain out". Also what's that plane in your avatar? Love the old war birds

Kamperbob,-yes HF base is 4'x8', I've been thinking of widening to tire width but it's not giving much more utility. The design has a his/her door on each side. But craw over isn't that bad, had to do it on our last two boats.
That Airstream looks sharp but I was glad to be sitting down when I saw some used prices OMG Also weight becomes an issue. I have an uncle towing a Scamp 13' with a Matrix, IMHO he's nuts. I want to keep empty trailer weight under 600lbs, loaded for highway 1000lbs.
  Reply With Quote
Old 02-24-2012, 05:59 PM   #29 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 8,296
Thanks: 10,085
Thanked 4,329 Times in 2,398 Posts
plan taper

Quote:
Originally Posted by Ed-in-Maine View Post
Here is the newest top view. I can't upload too much on a single post.
Ed
I know that you'd lose interior space,but allowing body plan taper would give upwards of an additional 38% drag reduction.Both Walter E.Lay and Wunibald Kamm confirmed this during wind tunnel research.
The gap is hurting you also.If the gap must remain,then a bulbous nose will give the lowest drag,especially in crosswinds.
If you can look at Hucho's books,you'll find hard numbers attached to different trailer architectures at varying degrees of yaw.
  Reply With Quote
Old 02-24-2012, 07:24 PM   #30 (permalink)
Eco-ventor
 
jakobnev's Avatar
 
Join Date: Oct 2010
Location: sweden
Posts: 1,079

Princess - '92 Mazda MX-3 GS
House of Tudor
Team Mazda
90 day: 53.54 mpg (US)
Thanks: 39
Thanked 300 Times in 199 Posts
Send a message via MSN to jakobnev

Attached Thumbnails
Click image for larger version

Name:	traily.jpg
Views:	973
Size:	48.3 KB
ID:	10340  
__________________




2016: 128.75L for 1875.00km => 6.87L/100km (34.3MPG US)
2017: 209.14L for 4244.00km => 4.93L/100km (47.7MPG US)
  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