E-Bike Mountainbike – BMC Speedfox Al Two
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Buying advice for an Mountainbike
Frame material
E-bikes tend to be heavier than conventional mountain bikes due to the additional weight of the motor and battery. Therefore, e-bike mountain bikes usually use specially developed mountain bike frames that are designed for the additional loads and requirements of the electric drive system. These frames are often robust and durable to withstand the demands of off-road riding. Aluminium is the most commonly used material for e-bike frames, including MTBs. It is relatively light, stiff and affordable. Aluminium frames offer good durability and are generally less expensive than frames made from other materials. Carbon frames can also be used for an E-MTB.
Chassis
The centrepiece of an e-bike mountain bike is the electric drive system, which consists of an electric motor, a battery, an operating display and a control unit. The electric motor supports the rider when pedalling and provides additional power, especially when climbing hills or steep terrain. The assistance levels and settings can vary depending on the model and manufacturer. Basically, most e-bike mountain bikes are equipped with suspension, which can include shock absorbers on the front fork and/or rear triangle. The suspension helps to absorb shocks and vibrations on uneven terrain and provide the rider with a more comfortable ride. Carbon frames are light, stiff and provide excellent damping of vibrations and shocks. This can be particularly beneficial on demanding trails. However, carbon frames are often more expensive than aluminium frames and can require more attention and care. Steel frames can also be found on some e-MTBs. However, these are heavier than aluminium and carbon frames, which is why they are rather rare and mostly found on hardtail models. Titanium frames are rarely found on e-bikes as titanium is an expensive material. Titanium frames are light, strong, corrosion resistant and offer a smooth ride. Due to the expensive price, titanium frames are often only used in high-end or custom bikes.
Wheels
The most common sizes for MTB wheels are 27.5 inch and 29 inch. Both have their advantages and disadvantages. 27.5 inch wheels often offer better manoeuvrability and acceleration, while 29 inch wheels can roll over obstacles and offer better traction. The choice depends on personal preference and the terrain you want to ride on.
Tyres
The tyres of an e-bike mountain bike are often wider and more robust than those of conventional mountain bikes to provide extra traction and durability on unpaved trails and off-road terrain. Tubeless tyres are also popular as they offer a lower risk of punctures and the ability to ride with lower air pressure.
Brakes
E-bike mountain bikes often use powerful hydraulic disc brakes that offer reliable braking performance, especially on fast descents or steep trails. The brakes must be able to safely slow down the additional weight of the e-bike and the rider. Therefore, high-quality brake pads are crucial for effective braking performance and a long service life of the brakes. They should be durable and provide good braking power without wearing down the brake discs too much. Brake pads with special additives for better grip and heat dissipation can be an advantage for more aggressive driving.
Battery motor
The capacity of the battery determines the range you can ride with your E-MTB. Typical motor outputs for E-MTBs can be between 250 W and 1000 W. The speed of the E-MTB is between 25 km/h and 45 km/h. Leading manufacturers for the E-MTB battery motor are Bosch, Shimano and Yamaha. A powerful motor makes it easier to tackle steep climbs and technical trails.