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brushless and coreless???

brushless and coreless???

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Old 03-21-2002, 05:11 PM
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Smile brushless and coreless???

Hi,
i'm new to these new terms in electric motors.


Could anyone tell me whats the different? or its both the same thing. I have heard that these motors need special esc to work with them. is that true? if it is true why is that so?


please advise.


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Old 03-21-2002, 10:48 PM
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Coreless motors are similar to what we now use, the difference being that their windings are not wound around an iron core. This makes the armature much lighter, so they spool up a lot quicker. Coreless motors have brushes and commutators, and will work with normal speed controls.

Brushless motors do away with the brushes and commutator, they need special speed controls to handle the switching that is normally performed by the brushes and comm.

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Old 03-21-2002, 11:08 PM
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thank you so much for the information.

just 1 last question...

if the coreless motor uses brushes, does it mean that it will wear out like the normal ones?


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Old 03-25-2002, 06:42 PM
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Coreless or Standard>>>>

Most servos use standard motors. These motors are smaller versions of the motors found inside most eletric R/C cars. When one of these motors has a voltage applied to it the amature will stop one of a number of preset positions. The amount of torque that a standard motor can produce is also limited because of the time necessary for the motor to spin up to speed. A coreless motor is like an inside-out motor; the winds are on the outside and the magnets are on the inside. Instead of the the winds of the motor spinning within the magnets, the winds spin on the outside of the magnet. A coreless motor can stop at any position on it's rotational axis and the spinning portion of a coreless is much lighter than a standard motor. This means that the motor spins up much quicker and produces the torque immediately when called to action. Coreless motors require adifferent circuirty than a cored motor, which is what dictates their higher selling point.
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Old 03-25-2002, 10:17 PM
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fuse01,

Yes, the brushes in coreless motors will wear over time.

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