Bill Swails, designer of the first EarthRoamer XV-LT credits a large part of the success of the EarthRoamer XV-LT design to his education in Systems Engineering from Ohio State University. Analyzing the structural and energy requirements of the XV-LT as a complete system instead of a collection of individual components results in an extremely robust and energy efficient design unmatched by any other RV or expedition vehicle manufacturer.

One Piece Composite Body

At the heart of this design is a one piece molded, sandwich construction composite body. Molded sandwich construction is used in yacht hull and aircraft manufacturing, but EarthRoamer was the first to use this technology in expedition vehicle manufacturing. Most expedition vehicle manufacturers use archaic and inferior glued-together, fiber reinforced plastic (FRP), flat panel  construction because it is much cheaper and they do not have the advanced technical capability required to produce one piece molded composite bodies. In addition to improved aesthetics, aerodynamics and thermal insulation, one piece molded XV-LT bodies have no seams to leak or fail structurally. Unlike other camper manufacturers, Monocoque  XV-LT bodies require no metal support structure. Internal metal framing on conventional RV and expedition vehicle bodies acts as a heat conduction path dramatically reducing the insulation capability of the body. Better insulation results in reduced heating and cooling energy requirements which makes solar and battery power viable energy sources. Additionally the strong monocoque XV-LT structure enables a large king or queen size over cab bed which dramatically improves living space efficiency.

No Noisy Generator and No Volatile Propane

Another major factor in the success of the XV-LT design is the elimination of propane and a conventional internal combustion engine powered generator as energy sources. By relying entirely on solar power and diesel fuel to power all systems, XV-LT’s are quieter, safer, more space efficient and functionally simpler than traditional motorhomes with their reliance on noisy generators and volatile propane as primary energy sources. Dual alternators (driven by the efficient turbo diesel truck engine) provide approximately 2.1 kWh of power to a large 6.1 kWh battery bank whenever the engine is running.  Whenever the vehicle is exposed to daylight a large .880 kWh standard solar panel array (up to 1.1 kWh optional with some models) charges the batteries and powers the camper . Couple these power sources to extremely energy efficient appliances and lighting, and in typical operation the need for running a noisy generator or plugging in at an RV park is eliminated.


synergy  syn·er·gy (sĭn’ər-jē)  noun
the working together of two or more things to produce an effect greater than the sum of their individual effects.

EarthRoamer Xpedition Vehicles epitomize the very definition of the word “synergy.”  By designing the EarthRoamer XV-LT  from the ground up as a synergistic system, the final vehicle is much greater than the sum of its parts and provides features and functionality unmatched by any other expedition vehicle or RV.