Frequently Asked Questions
Does my board come with a warranty?
Yes, in the unlikely event your Epic skateboard has a problem, it comes with a 6-month manufactures warranty. Manufactures warranty does not include misuse, neglect or wear and tear of your electric skateboard. Please note that the board must be returned to the manufacturer in the original packaging. Of course, Epic is available to help you with any questions for the life of the skateboard. Click on the Service & Support tab to the right for more information.
Can I go in reverse?
Yes, all Epic electric skateboards are able to go in reverse. You just press the mode button on the hand controller, the lights will flash, then to go in reverse you just push the trigger forward. To break you pull the trigger back.
What is the difference between brushless and brushed motors?
Brushless motors used in electric skateboards offer more power and longer run times than conventional brushed motors of the same size. The superior power, efficiency, lighter weight and quietness of brushless motors make them the ideal choice for high-performance electric skateboards.
The Brushed Motor in electric skateboards function through the creation of magnetic fields whose attraction and opposition keeps a central rotor turning. In a brushed motor, fixed magnets are placed on either side of a rotating electromagnet, one oriented to a positive pole, the other to a negative one. The electromagnet is formed by a series of coils (usually three placed at equidistant points around the rotor) called the commutator. When electricity is passed through these coils they generate their own magnetic field that is repelled and attracted to the magnetic fields generated by the fixed magnets. Current is transferred to the coils of the commutator by metallic brushes which rotate along with the rotor. When the motor is switched on, current is passed to the electromagnets whose magnetic fields are repelled by one fixed magnet and attracted to another, causing the rotor to turn. As the rotor turns, the metallic brushes come into and out of contact with each coil in series so the opposition and attraction between the resulting magnetic fields and the fields of the static magnets keeps the electromagnet turning.
In a Brushless Motor the positions of the fixed magnets and the electro-magnetized coils are reversed. The fixed magnets are now placed on the rotor and the coils are placed in the surrounding casing. The motor functions via current being passed through each surrounding coil in series, so repulsing and attracting the fields of the fixed magnets and keeping the rotor they are attached to turning. For a motor of this kind to work, the coils of the commutator need to be kept synchronized with the fixed magnets so that the fields are continually in opposition and the rotor is kept turning. This requires an electronic controller or microprocessor to coordinate the application of current to each electromagnetic coil.
Brushed Motor Pros: Operates in extreme environments due to lack of electronics. Some can be rebuilt for extended life and they have a low cost of manufacturing.
Brushed Motor Cons: Periodic maintenance is required. Speed/torque is moderately flat. When the electric skateboard travels at high speeds the brush friction increases, thus reducing useful torque. Poor heat dissipation due to internal rotor construction and higher rotor inertia limits the dynamic characteristics. It has a lower speed range due to mechanical limitations on the brushes. Brush arcing on the electric motor will generate noise causing electrical magnetic interference (EMI)
Brushless Motor Pros: Electronic commutation based on position sensors vs. mechanical switch for brushed. Less maintenance due to absence of brushes. Speed/Torque û flat, which enables operation at all speeds with rated load. High efficiency, no voltage drop across brushes. High output power to size ratio. Reduced size due to superior thermal characteristics. Because the windings are connected to the case the heat dissipation is better. Higher speed range û no mechanical limitation imposed by brushes/commutator. Low electromagnetic interference (EMI) or electric noise generation.
Brushless Motor Cons: Higher cost of construction. And Electronic Speed Control (ESC) is required to keep the motor running which is sometimes more expensive than the motor.
What are the best wheels for an electric skateboard?
Wheels come in a variety of sizes, shapes, colors and hardness. The type of wheels that will be best for you depends on what you will be using your electric skateboard for.
Wheel Material & Hardness
Electric skateboard wheels are usually made of either Polyurethane (PU), which is a synthetic crystalline compound that is both resilient and very durable, or rubber, which is much more well-suited for off-road riding that PU wheels. When you look at a set of PU wheels you will usually see two sets of numbers. The first set of numbers is the diameter size of the wheel in mm normally between 48mm and 112mm, the second set of numbers is the hardness measured by the durometer scale, and is normally between 78a and 104a; the higher the number the harder the wheel. (Sometimes wheel rating have a 'b' or a 'd' after the number instead of an 'a'. This makes the scale number scale higher, so a 100a wheel is the same as an 85b wheel or a 58d wheel. Pneumatic (inflatable) rubber tires, on the other hand, are usually measured simply by diameter and width.
Harder wheels slide easier, whereas softer wheels have more grip and give you a smoother ride.
Thus, most technical skateboarders prefer a harder wheel for durability, speed, and controlled sliding ability. Softer wheels, on the other hand, will give you a smoother ride and are better if the skater is using the skateboard for cruising and riding on rougher ground. Of course, the softest wheel of all are pneumatic rubber tires, which are the best choice for off-road riding.
Narrow wheels are more responsive, have less friction and are lighter in weight. This can be great for street boarding, but wider wheels will grip the ground better and are the best for cruising. Smaller wheels wonÆt last quite as long or ride as smoothly as wider wheels. A larger wheel maintains its speed longer and actually will roll faster when it gets going and are designed mainly for cruising or transportation. This would also go for dirt wheels, which, as the name implies, are meant for dirt or cross-terrain riding. Anytime you are looking to ride over dirt, grass, gravel or other uneven surfaces, it is recommended to use the larger pneumatic tires.