mordecai81 wrote:
Some TTs are not designed to carry a full tank on the road. Forest River says there mini/ultra lite lines should carry only 1/3 of a tank when towed. The braces holding the fresh tank to the frame are incredibly light. My front brace was bent at a 30 degree angle from carrying a full load-it would have eventually failed completely. My helpful neighbor welded some angle iron to the front and rear braces so it's solid now.
Actually Forest River only says that when you have some kind of problem. Nowhere will you find any warning or direction telling you not to travel with a full water tank until the support framework bends or the tank is laying in the middle of the road. Not in the manual, brochure, a warning decal, nowhere. Only when you contact them informing of the failure will they start him hawing and mealy mouthing their load of BS.
Furthermore its not just the FR mini and ultra lites. If you snoop around a little over at the goody two shoes FRF you'll find the water tank support failures happen to many of the FR brands. The bad part is on units with enclosed under bellies, most people are not even aware they have, or are getting ready to have, a failure.
Better yet is how some FR divisions resolve the issue. They pawn you back to LCI (Lippert Components), the frame manufacturer, under the "component supplied by others" clause in the warranty documentation. Attempting to get resolution from LCI is an exercise in frustration and about as time consuming as a rocket trip to Uranus.
If you have a Forest River towable, it would behoove you to do a thorough inspection of the underside even if that means doing the PITA removal of the under lining. Then buy some iron and a welder.
I always have filled tanks heading out and I added a 2nd 39 gallon tank to our Roo, so I'm toting around 78 gallons. You will not get any noticeable gain in fuel mileage between empty or full. Maybe over the course of 50K miles or something. I went to Vermont from western PA last fall with full tanks going up (650 lbs) and had the same MPG coming home empty.