Unfortunately, not even this great bike is perfect. The otherwise great performance is somewhat let down by the weak disc brakes. Stopping time could be improved with an upgrade. The relatively high weight of 59 lbs is also a disadvantage, and lots of the weight is on the rear wheel, making the GB5 500 prone to accidental wheelies if you accelerate too hard in throttle mode.
Brought to market via a Kickstarter campaign, this electric folding bike is probably the most superhuman looking of the bunch. The battery is just 138W, but it’s the size of a water bottle, drastically reducing the weight of the overall bike to just 12kg. A dual chain drive keeps the pedalling feeling as close as possible to a ‘normal bike’, despite the teeny tiny wheels. Possibly one that’s got to be tried to be believed.
5 levels of pedal assist and a thumb throttle allow you to control the amount of power, with a top speed of 20 mph. When power is applied, it is not overwhelming. You remain in control of the 500-watt geared hub motor at all times. The battery is a 36v 9 Ah Lithium-ion model. You can get 20-30 miles of range on one charge, in part thanks to the motor inhibitor that cuts power when the brakes are applied.
bike design refers to the ideation and development of two-wheel, human-powered, pedal-driven vehicles, and their use across various aspects of our lives -- from leisure to sport to basic transportation. bicycles can take on a variety of frame geometries, rendered in a diverse range of materials such as aluminium, bamboo and carbon fibre; and include hybrid and electric versions.