Brushless vs. Brushed motor
A Brushless motor does not use contact brushes to create a
complete circuit. Brushless motors instead use several series of tightly bound
copper bundles to draw the motor forward via electromagnetic attraction. This type
of conversion kit uses a 400watt motor, and has a 20amp controller to regulate
voltage going to the motor. Brushless
motors have 80 – 90% efficiency in converting electrical energy into motion.
Simply put, you will get a long travel distance (20 miles) when you choose a
BL-36 conversion kit. The top speed of this kit is 20miles/h or 32km/h. In using a brushed motor, the motor is a
600watt motor paired a 35amp controller.
This type of setup means the controller can send more power to
motor. The top speed of a brushed kit is
25mile/h, however since the brushed motors only have a 70% efficiency, you will
get much shorter travel distance (around 11 miles) in contrast to a brushless
kit.
With Brushed motor, you will likely need
to change the brushes every 2 – 3 years when they wear out. Brushless
motors however, do not need this type of maintenance because there are very few
moving parts inside the motor itself. Since an internal core of earth
magnets drives brushless motors, this makes it so there is an almost silent
operational mode in using the motor. You won’t hear the motor when I am riding
my ebike behind you until I’ve already passed you with ease. The only
moving part inside a brushless is the bearings making this type of motor
totally maintenance free. However, for those that are not aiming for
travel distance, but require substancial amount of torque and speed. The
brushed motor is your choice for that type of applications. A brushed motor
is also cheaper in price comparision to a brushless motor, but the travel
distance for it is much lower because of the inefficiency of the motor itself.
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