mikehart92
Oklahoma
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Joined: 06/24/2004
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I enclosed my underbelly about a year after getting it. I can't remember any difference in the way it pulled or the mpg. It does make all the difference as to what kind of weather you can camp easily in.
Mike
Boilermakers Local 592
2005 Chevy 2500HD.............6.6 D/A, 4x4, Crew Cab
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Keith99RS
Suffield, CT
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Joined: 11/14/2005
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Unless you change the face of the trailer you are still trying to punch a square hole in the air with the majority of the larger surface. No mpg gains.
Smoke 05 Titan SE CC 4X4
K&N panel filter
PRG 2.5" Leveling kit
Bilstein front,Icon rear shocks
Powerstop slotted rotors
18" Wrangler AT/S LT's
2009 Fleetwood Prowler 2702BS
Primus Brake Controller
Reese DC w/ 1,000lb/10,000lb WD
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marknpat
Colorado
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Joined: 05/25/2008
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mikehart92 wrote:I enclosed my underbelly about a year after getting it. I can't remember any difference in the way it pulled or the mpg. It does make all the difference as to what kind of weather you can camp easily in.
Mike
Boilermakers Local 592
What material did you use to enclose the underbelly of your TT? We frequently camp in cold weather so any added insulation would be great.
* This post was
edited 06/01/08 08:58pm by marknpat *
Mark and Pat
09 Itasca Cambria 28B
08 Jeep Wrangler Rubicon Unlimited
06 Jeep GC Overland 4x4 5.7 Hemi
"Fun is standard, Pavement is optional" JEEP
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mikehart92
Oklahoma
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Joined: 06/24/2004
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marknpat wrote:mikehart92 wrote:I enclosed my underbelly about a year after getting it. I can't remember any difference in the way it pulled or the mpg. It does make all the difference as to what kind of weather you can camp easily in.
Mike
Boilermakers Local 592
What material did you use to enclose the underbelly of your TT? We frequently camp in cold weather so any added insulation would be great.
I had some aluminum and industrial insulation from a business I had. You could do it with the 29guage steel from lowes if needed. That wouldn't be too heavy and then just use rolls of insulation. I still try to skirt my trailer when temps get below zero.
Mike
Boilermaker Local 592
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CampSight
USA
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Joined: 09/08/2004
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Quote:Sounds very logical to me. No cross members or axles, or any thing else to catch air and cause turbulence.
My rig has the enclosed underbelly but my axles are still exposed.
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mcoonan
Mendota Heights, MN
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Joined: 02/05/2005
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mikehart92 wrote:marknpat wrote:mikehart92 wrote:I enclosed my underbelly about a year after getting it. I can't remember any difference in the way it pulled or the mpg. It does make all the difference as to what kind of weather you can camp easily in.
Mike
Boilermakers Local 592
What material did you use to enclose the underbelly of your TT? We frequently camp in cold weather so any added insulation would be great.
I had some aluminum and industrial insulation from a business I had. You could do it with the 29guage steel from lowes if needed. That wouldn't be too heavy and then just use rolls of insulation. I still try to skirt my trailer when temps get below zero.
Mike
Boilermaker Local 592
Mike,
Do you have pics that you would care to share?
Thanks
Mike
'05 Cherokee 28DD
'04 Expedition w/HD tow package.
Hensley Arrow and Jordan Ultima 2020
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LarryJM
NoVa
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Joined: 11/09/2007
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saltbayou wrote:does an enclosed underbelly tow easier and more economically due to less drag. salesman said it will(why would he lie). anyone have an opinion. it does seem logical
My last trailer weighed 6900 lbs and was a 1980's type w/o enclosed anything and was actually a foot or so higher in the back than our current trailer that has the fancy "aerodynamic front" and enclosed underbelly and only weighs about 800 lbs more and I'm getting 1mpg worse mileage on the new trailer than the old.
Larry
2001 standard box 7.3L E-350 PSD Van with 4.10 rear and 2007 Holiday Rambler Aluma-Lite 8306S Been RV'ing since 1974. TRAILER MODS
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hilldude
Red house WV
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Joined: 03/08/2008
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marknpat wrote:mikehart92 wrote:I enclosed my underbelly about a year after getting it. I can't remember any difference in the way it pulled or the mpg. It does make all the difference as to what kind of weather you can camp easily in.
Mike
Boilermakers Local 592
What material did you use to enclose the underbelly of your TT? We frequently camp in cold weather so any added insulation would be great. The cover on my trail cruiser under belly is corrugated plastic. looks like a card board box type material. it is glued with caulk an put on with metal screws. I think it is one piece eight ft wide and 24 ft long.
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plumber1
evensville,tn.
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Joined: 01/06/2008
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CampSight wrote:Quote:Sounds very logical to me. No cross members or axles, or any thing else to catch air and cause turbulence.
My rig has the enclosed underbelly but my axles are still exposed.
I'm sure some have the axles exposed,but the low profile of our Jayco Jayfeather has the belly wrap under the axles as well. This is good until you need to get to something, then it is a pita.
Steve
Actually, ours has the Dexter torque flex axles, so suppose they don't have the true axle side to side.
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martinar
Cincinnati, OH
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Joined: 03/02/2008
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My new unit has an enclosed underbelly and a curved front wall. About the same weight as our last one. With the same TV and hitch set up, we have noticed no sway when towing and very little turbulence when we get passed by a semi, in wind gusts, etc. Don't know if its the aerodynamics or not. But I do know that there is a real noticible difference when pulling it.
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