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.
The harder you pedal, the bigger the boost, the faster you’ll ride—to a point. E-bikes let you hum along at a brisk clip, but they aren’t motorcycles. You’ll never jackhammer down the road at 45 mph. The motor is governed to stop propelling you further when you hit 20-28 mph, depending on the bike. So you’ll save time on your commute (I shave about three minutes off a five-mile trip) but still enjoy the scenery.
A low-mounted motor keeps the centre of gravity low and the entire system compact, while allowing for ultra-short chainstays and a bottom bracket that is integral to the frame. We use a high efficiency, three-phase brushless motor to provide class-leading torque and ultra quiet operation. To get instant power response on trail, we put the torque sensor between the chainring and the drive gear, and our 48v battery voltage allows for super fast charging.
…but currently offer only very few advantages, such as a cleaner design and the option to mount a bottle cage in a front triangle. If you want to take a spare battery in your backpack, you will have to struggle with the larger dimensions of the integrated batteries, or you won’t have the possibility to take one with you at all. Depending on the integration, handling the integrated rechargeable battery (e.g. the on-button for Shimano-Intube) can be awkward. Also, the longer battery results in a higher centre of gravity. The fact is that there are good reasons for continuing to use a standard external battery.
For those who know the brand, Ducati makes lust-inspiring road motorcycles, covering the range from scramblers to naked bikes to sport bikes. They’ve topped podiums globally, appeared in too many movies to name, and in some cases have ended on display in art galleries. But like everyone in the motorcycle business, the company is challenged by global changes and is looking to capitalize on its valuable brand. Likely it was challenged to by its corporate overlords, as the Ducati company was acquired by Audi and hence VW in 2012.
The Shiv TT boasts an aerodynamic frame that observes the letter, but not the spirit, of the UCI's laws on position and frame shapes. Its profile has been refined in our Win Tunnel to take crosswinds in stride, and the wide range of fit options in the integrated cockpit lets riders find a fast, comfortable position for putting out power. Impressively, this is done without causing time-eating instability in tight corners or on technical descents.
An electric bicycle, also known as an e-bike, powerbike or booster bike, is a bicycle with an integrated electric motor which can be used for propulsion. Many kinds of e-bikes are available worldwide, from e-bikes that only have a small motor to assist the rider's pedal-power (i.e., pedelecs) to somewhat more powerful e-bikes which tend closer to moped-style functionality: all, however, retain the ability to be pedalled by the rider and are therefore not electric motorcycles.