All types of racing cars have different types of motors. Some have single
or some have double. It is really confusing to try to sort out the difference
between a single our double motor car. Plus a newbie into the world
of remote control cars gets easily disoriented with what is a 13 turn
double or a 13 turn single…?
Well, in plain speaking language it refers to number of times the wires
are wrapped around the armature. A 13 turn double would be 2 strands
wrapped 13 times. A 13 turn single would be 1 wire wrapped 13 times.
The double wires have more torque where as single wires have more speed.
In general, it means that more turns means more torque but less speed
and vice versa. That’s lower turns means lower torque and greater RPM.
The number of winds describes how abruptly the motor accelerates. Fewer
winds would mean less abrupt acceleration and more winds would lead
to smoother accelerations.
Torque basically refers to how much a force is acting on motor that
causes motor to rotate. If there is more than one force acting on a
motor then each of these forces shall apply torque. The net torque acting
upon the motor shall be the sum total of all the forces or torques acting
upon a motor. It is usually required for cars racing on the twisted
Remote control cars come with two kinds of motors: the ones with brush
and ones without i.e. Brushless. The brushless motor has windings located
around the outside of the motor and the magnets are located on the moving
motor shaft. A brushless motor does not provide any friction therefore
provides higher RPM. But a brushless requires a lot of processing power
that’s why it has not been a great success with RC trucks or cars.
The slot less and brushless motors are third generation motors. With
slot less design, motor can achieve higher efficiency, torque, fast
response time and longer life time with greater with zero maintenance.
Cogging problem is also eliminated even at lower speed operation. But
since there is a lot of research and development involved in their development
they come out as expensive solution in case of RC cars.
There are also sensor less and motors with sensors. Sensor motors are
older technology with less cogging, less rpm and less power. On the
other hand sensor less motors are newer technology with more power and
more rpm. Both have difference of cogging on start up. This can prove
to be a little troublesome when you are in a race. It seems like forever
for a sensor motor to start up. But sensor less motor gives smoother
throttle response, efficient running and a fewer wires to mess up with.
Remote control cars have a lot to do with the motors and their functioning.
When preparing for a race, checking out on motors can be really helpful.
If your car is heavy then may be a motor with more torque would be required.
A speedy light action racer would need a greater rpm. Connections and
wires to all the motors need to be properly fixed and checked. If you
have some cash to spare for the race then going in for the slot less
motor can be good idea.
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