Light-weight trucks (S-10s, Ranger, Tacoma, etc.) make great conversions because
they can accommodate the additional weight of batteries and the space required. We
are proud to say that in 1991 when others were converting Geo Metros, Ford Escorts,
and other small cars, EVA converted one of the first light weight trucks, a Dodge
Ram 50, which weighed 200 lbs more, yet had significantly more space for batteries.
Others were amazed and soon copied our concept.
Trucks are not recommended, if you are looking to maintain highway speeds. The aerodynamics
are poor in comparison to a car; and aerodynamic drag become the principal force
after about 35 mph. And aerodynamic drag increases with the square of the velocity.
So the drag at 60 mph is 4X the drag at 30 mph. The increased drag increases horsepower
required and decreases range
Range requires battery weight; approximately 20 lbs of PbA batteries is required
to obtain one mile in range. Typically, it takes 1200 lbs of PbA batteries will
provide 50-70 miles in range.
EVA’s design uses a tilt bed system for trucks to allow the batteries to be placed
under the bed. This has several advantages:
• The center of gravity is lowered, so the truck hugs the road
• The batteries can be safely contained incase of an accident.
• The bed can be used as it was designed for handling additional loads.
EVA recommends S-10 conversions because the frame rails are further apart. This
allows space for batteries and additional insulation (cold weather operation). Plus
the S-10 uses a channel (open) frame construction, while other vehicles use a box
frame. Box frames typically corrode from the inside out.
Our technical papers “Safety First” and “Selecting a Vehicle for Conversion” provides
To help your EV project succeed from the start, EVA provides:
• Free Calculations based on your requirements. The calculations will identify
the recommended hp, the voltage, current, and range based on a specific battery pack.