UrbaTrike

Agreed - we need a fun and efficient electric vehicle for local trips. But how does that translate into the real world without straining the pocketbook?  For summers and year-around Southwestern US climates, UrbaTrike got it right early on.  It's sleek styling and open-air motorcycle feel make it ideal for trips to work and quick runs to the store, or just pleasure-cruising on weekends.  And with its simple frame and motorcycle front end, there's not really much building to do.  UrbaTrike's minimalist approach translates into nearly free local transportation, and it's loads of fun to build and to drive.
       UrbaTrike was conceived as a way to put fun and pleasure into the prospect of saving energy and reducing emissions. It's an electric open-bodied trike with seating for two and a range of up to 50 miles on its original 48-volt battery pack. By using today's batteries and controllers, performance can be put on steroids and range can be doubled or even tripled.
         If you never driven a trike, it's something like a cross between a motorcycle and a wind-in-the-teeth fold-down-windshield sports car. And with UrbaTrike, performance can be tailored to fit your excitement threshold. The prototype shown here is equipped with a modest 48-volt battery pack comprised of eight 6-volt golf car batteries. With this setup, UrbaTrike accelerates from 0 to 35 mph in 9.5 seconds and has a maximum speed of 55 mph - not really wind-in-the-teeth sports car performance. But a 96-volt battery pack (switching to 12-volt batteries) will push top speed to 75-80 mph and double the acceleration rate.  Adding additional batteries will give it even more punch.  Performance depends on the electrical charge the batteries put behind the motor.
         The live rear axle can come from just about any rear-wheel-drive car, but ours was from an old Toyota. Virtually any automotive live rear axle will work for UrbaTrike's electric drive.   The important factor is to keep the track about the same - 54 inches (1370mm).  With a wider track, you'd simply extend the fenders to cover the wheels.  If you have to deviate from a 54-inch (1370mm) track, go wider, not narrower.  The fork is from a Honda 750, but a fork from any large motorcycle will work. The simple frame is made of welded steel tubing and the body is made of FRP/foam composite. You can see the simple design in the rendering in the left margin.  The frame can be built in a couple of weekends. Figure about 150 hours to build the fiberglass body. Plans give complete dimensions and assembly details.  Click on the bottom image in the left margin to see an exploded view rendering of how UrbaTrike is built.
     UrbaTrike plans come with recommendations and sources for modern batteries, motors, and controllers.