There's no room for failure in DH. That's why our Demo 8 downhill mountain bikes get right down to business. They're designed to be the fastest bikes on the track, and with a World Cup overall, it's safe to say that we did it right. You'll find 200mm of our FSR suspension, aggressive S3 DH race geometry, asymmetrical frames, and 650b wheels. It's a machine primed to give you maximum control over the gnarliest terrain that the mountain can muster.
While in many areas of the country you are allowed to drive mountain electric bikes in urban settings, some local jurisdictions may limit their use as some models reach 28mph exceeding the on road accepted limit of 20mph. So before you purchase one of these bikes, make sure to check the local laws in your given area. These bikes are good for many different age groups including teens and adults. Since the pedal assist doesn’t engage while coasting, climbing is where this bike really shines. We tested the bike on southern California’s fire roads, undulating traverses, and on some very steep, rocky, loose, and technical trails—the kind of stuff even the most skilled and fit riders would normally find themselves hiking up—and on the Turbo Levo we were able to ride all of it, and have a blast doing so.
In a friction drive motor, a small, solid wheel rotates against the side of the tire in order to drive it. The first motorcycles used the same concept, with a motor mounted above the front wheel. The problem is that the drive rubs at the side of the tire. It's inefficient, and it quickly wears the sidewall away. Tires need to be replaced every couple hundred miles. For this reason, you'll seldom see electric bikes with this type of drive anymore.
E-bikes use rechargeable batteries and the lighter ones can travel up to 25 to 32 km/h (16 to 20 mph), depending on local laws, while the more high-powered varieties can often do in excess of 45 km/h (28 mph). In some markets, such as Germany as of 2013, they are gaining in popularity and taking some market share away from conventional bicycles, while in others, such as China as of 2010, they are replacing fossil fuel-powered mopeds and small motorcycles.