RVers what's your true mpg highway?

[flying kurbmaster]

<p>Hi OTRagain..no build thread, one of these days, but I did &nbsp;start an album, if you click on my user name, select profile, you will get to my albums, one interior, one exterior not all mods on there but some are. will post more soon. cheers fk<br>PS&nbsp; how do you quote on here??</p>

 

[rokguy]

<EM>My Mazda T series and Ford trader are essentially the same base vehicle both 3.5ltr turbo charged Diesels running 10 speed manual gearboxes both get 26mpg at hwy speeds (100km/h) (60mph) in 10th overdrive.</EM><BR><EM>Both vehicles have been significantly modified for areodynamics the Mazda&nbsp;box truck has smooth&nbsp;aero nose cone and side burns channelling air around the box front edge and has&nbsp;polished alloy side skirts between the wheels,&nbsp; both trucks have polished stainless drop bumper air dams which also help. Both have air rams which grab clean cool air from above the cab and force it into the engine, making the diesels more efficient.</EM><BR><EM>The back of the B class style motorhome&nbsp;/ boxtruck has a small trailing lip on the top rear which I want to make bigger (like a&nbsp;small roof wing) this&nbsp;should cut down more&nbsp;dirty air at the back (drag) Both trucks weight in at 4 tons.</EM><BR><EM>&nbsp;</EM><BR><EM>I agree with what flying curbmaster is doing, modifying the aerodynamics of the front end and adding side skirts enhances fuel economy.</EM> <BR><EM>Geoff</EM>

 

[flying kurbmaster]

<p>hey Rockguy love your units and noticed your aero mods... all that front and side stuff helps but most aeromodders will tell you the party is at the back. if you can put a boat tail on, this&nbsp;would be&nbsp;the ultimate but failing that turning your sides and back in between 10 and 15 degrees for as long as you can&nbsp;will bring you most joy. I got a&nbsp;Toyota townace that I managed to get a 10% gain by simply adding a section of front belly pan, a partial&nbsp;grill block,&nbsp;a small camback about 10 inches and blocking the spokes on my mag wheels. I went from 30mpg to 33 mpg...total cost a few pieces of thrown out coroplast&nbsp;liquor and realestate signs I picked up at the&nbsp;dump for less then 10 dolllars and a little time. At&nbsp;over 2.00 dollars a litre pay back time, 500kms.&nbsp;cheers fk</p>

 

[ontheroadagain]

flying_kurbmaster I would like to learn a bit more about what you were talking about in your last post about the rear boat tail, belly pan, partial grill block and what the wheel spoke blocking means. <br><br>thanks

 

[Kimbopolo]

2010 Chevy Roadtrek 190, 6 cylinder, v-8, travel weight @ 8200 lbs. = 14.6 mpg. I aim for 60 mph top speed.

 

[flying kurbmaster]

Ontheroadagain.... loaded some pictures for you of townace and mods, a picture is worth a thousand words, click on my user name, profile, albums, toyota townace, fill your boots.. I have written under each photo what is what, hope this helps.... if you are really interested in aeromoding check out this website and do some reading lots of great information...... ecomodders.com... or something like that, google it I am sure it will come up, hope that helps ....fk<br><br>edit: also added some close ups of the aeromods&nbsp;in the exterior of kurbmaster album&nbsp; with captions

 

[Willy]

2010 Chevy Roadtrek 190, 6 cylinder, v-8, travel weight @ 8200 lbs. = 14.6 mpg. I aim for 60 mph top speed.

<br><br>&nbsp;Uhmm..is it a 6 or an 8?

 

[rokguy]

I<EM> agree Kurbmaster with the bobtail wings, alot of semi's here are using them now, as well as under skirts on their trailers, unfortunately I can't add anything to the back edge of&nbsp;my pantec as I'm at the absolute maximum legal overhang now! well an inch over by don't tell anyone. Next best thing I can do is the roof wing.</EM><BR><EM>The tray truck actually creates more tubulence than the motorhome truck, as I noticed yesterday driving down a narrow (8ft wide)&nbsp;country road and was observing the swirling dust eddies in the mirrors following down both sides at the back of the rig.</EM><BR><EM>Geoff</EM>

 

[highdesertranger]

I was going to ask the same thing.&nbsp; what is a six cylinder v8?&nbsp; highdesertranger

 

[Willy]

&nbsp;It's one of them thar HYBRID engines. Yup, what it is.

 

[joey]

1997 Coachmen Class C,460 V8.......8mpg downhill with a strong tail wind...LOL!!!

 

[RV-Kitty]

Rv-kitty: what is the spec's on your GMC 1500? That is the kind of tow mpg anyone would love.<br>Is this a van or truck? motor size? transmission manual?<br><br>thanks

<br><br>DH is sleeping so I can't give you the specs. Mileage will vary some due to load, wind, traffic etc.&nbsp; It's a 14 yr old Savannah van we bough used.&nbsp; She pulls great, even over Monteagle Mountain in TN.&nbsp; We need a van because of all the stuff we haul to FL with us and the four cats.&nbsp; The cats ride in large cages w/litter pans in the van.

 

[highdesertranger]

anybody remember the caddy 4-6-8 engine?&nbsp; what a nightmare that was.&nbsp; highdesrtranger

 

[RV-Kitty]

&gt;I think HOW and WHERE a person drives is also important where gas mileage is concerned.&nbsp; Add how well maintained the TV is, tire pressure, high-test or regular etc.&nbsp; &lt;br&gt;&nbsp;

 

[gymrat]

Gulfstream 2006 B+ 6.0 liter vortec V8&nbsp; 23' usually got 11 mpg. thats setting the cruise at 63mph.&nbsp; 2013 chevy express van conversion 4.8 liter V8 17+ mpg at 72 mph

 

[DougB]

Bare 2008 F-250 extended cab 4x4 6.4L turbodiesel auto at 9,100 pounds: 13-18MPG<br><br>Hitched to 26" TT weighing 7100 pounds at 60MPH:<br>average 10 highway<br>range 7.5-14 depending on incline and wind

 

[ontheroadagain]

fk: your van is very cool. I love it. Thanks for the pictures and the website. very interested and will begin reading up on ecomods

 

[accrete]

Ready for a week of adventure, full tanks, two adults:<br><br><img rel="lightbox" src="http://www.accrete.com/Parkliner035/TCL_PL035firstTestDrive04-21-2013.jpg" class="bbc_img"><br><br>Chevy 1500 AWD van conversion with 5.4L v8 (6800 loaded with gear at scales two adults full tank) pulling 2400lb (at scales) 15ft fiberglass trailer.<br><br>In town the van alone gets ~14 loaded. On highway pulling trailer ~16 (not towing ~17/19)<br>Thom