Go Back   EcoModder Forum > Introductions
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 10-11-2012, 09:35 PM   #81 (permalink)
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 1,422
Thanked 736 Times in 556 Posts
For a travel trailer, deduct 40% from highway mileage as a rule of thumb. For an smaller, more aero trailer, I'd think 30% is do-able. Much depends on driver skill, not just travel speed.

Lower is better. Narrower is better. Total frontal area is the main problem. Radiused edges -- all of them -- is a big deal.

See the U-Haul 12x6x6 trailer as an ideal example. I was able to keep mpg at 78% of normal (behind truck in sig).

And tandem axle tows more easily . . a bit more stability.


  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 10-11-2012, 11:46 PM   #82 (permalink)
Corporate imperialist
oil pan 4's Avatar
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 10,629

Sub - '84 Chevy Diesel Suburban C10
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)

Snow flake - '11 Nissan Leaf SL
90 day: 141.63 mpg (US)
Thanks: 255
Thanked 3,399 Times in 2,693 Posts
I loose 3 to 4 MPG when towing my 8x4 foot single axle trailer.
Its mostly added aerodynamic drag because the best fuel economy numbers I have for towing are when it was empty or only loaded with a few hundred pounds.

My friend would barrow it to tow behind his tacoma and would lose 6mpg with a bed full of wood and with the trailer over loaded with wood to the point it was up above the wooden sides and was held in place by cargo straps.
I invited him to try and break it.

We both drive our vehicles 55 to 65 mph.

1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
  Reply With Quote
Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com