Instructables user [samsmith17] wanted to cover his bike with EL wire for this year’s Burning Man, but he didn’t want to mess with the hassle of using batteries as a power source. Instead, he decided that his EL wire bike would be powered solely by the rider. In the interest of keeping things green, the entire build is made up of re-purposed parts, aside from the EL wire itself.

If you are not familiar, EL wire only lights up when AC current is supplied, so he decided to use a stepper motor to generate the current required. The stepper motor was mounted against his bike’s wheel, and wired backwards through the AC transformer portion of an old cell phone charger in order to step up to the required voltage. A rheostat was also added to the circuit in order to help prevent an over voltage condition, which could potentially damage or destroy the EL wire.

The end result is pretty cool to watch, and costs very little to boot. It would be nice to see someone expand on his project, adding additional wire colors and perhaps a few capacitors to keep the wire from going dark immediately after the wheels stop turning.

Continue reading to see a quick video of the completed project.

The first project we found is the E-cumbent by [Matt Shumaker] . [Shumaker]‘s ongoing project uses a power unit he constructed out of RC airplane electronics: the motor, the controller, a servo tester, and a battery eliminator circuit connected to 14 lithium polymer cells plus several CNC milled parts. The power drive connects to a sprocket mounted on the left side of the rear wheel. The bike is constructed with two reduction stages; the second stage has a freewheel that allows the rider to pedal while the motor idles, use the motor and pedal power combined, or use motor power alone. [Shumaker] also built a display console onto the handlebars, which shows trip information, MPH, and information on battery usage.

[Warren Beauchamp] designed a somewhat more simple electric recumbent he calls the Cuda-E. This design uses a 450 watt motor from a Mongoose pedal/electric motocross bike. It doesn’t just take the motor, though: it uses the entire rear subframe. The recumbent uses the motocross bike’s single pivot rear suspension, which attaches the rear and front subframes with a pivot and and a shock absorber. The motor is powered by a 24V lithium phosphate battery pack, but like the last project, [Beauchamp]‘s recumbent can use any combination of pedaling and motor power.

A third project we found is by [Dana Barlow], and it really whet our appetite for more detail. [Barlow] chose to use parts from the same kind of motocross bike [Beauchamp] did, but unlike him, [Barlow] did not leave the motor in its original place on the rear subframe. Instead, he moved it to just above the freewheel, freeing up the space for a larger wheel to be used. [Barlow]‘s bike is also distinct from the last two in that it uses remote steering: the handlebars and the suspension fork are on two different shafts. Unfortunately, very little information on the process was in the write-up.

All of these projects were found on Recumbents.com, which is a great one-stop resource for information on buying, building, riding, and racing recumbent bicycles.