+ More. The oldest baby boomers have already turned 65, and the older population of the U.S. is beginning to swell. The age-65-and-older population grew 18 percent between 2000 and 2011 to 41.4 million senior citizens, according to a recent Administration on Aging report. More. The oldest baby boomers have already turned 65, and the older population of the U.S. is beginning to swell. The age-65-and-older population grew 18 percent between 2000 and 2011 to 41.4 million senior citizens, according to a recent Administration on Aging report.
Community Q&A. An electric bicycle can easily be built by taking an existing bicycle and adding five parts: 1) a motor, 2) a linkage from the motor to a wheel or pedals, 3) batteries, 4) a throttle and 5) a motor controller (the brain that regulates how much battery power to send to the motor based on the position of the throttle).
A mechanic is working on a bicycle. Bike pedals come in an array of types and designs, but most pedals screw into the crank with a 15 mm pedal wrench. A few pedals need a 9/16-inch wrench, or even a 6-mm hex wrench to use on the back of the crank if they don't have flats on the axle. Check your bike before you begin to make sure you have the right tool.