Etek Permanent Magnet "Pancake" Design, 20% lighter than standard series wound motors.

What makes the Etek motor technology unique is the use of copper bus bars rather than steel and copper wire as the basic building block of the armature. These copper bus bars are stamped, bent, coated and assembled into a thin rotary disk. End clips connect the tips of the bus bars to shorten the air gap between the magnets. Steel is inserted between the bus bars to shorten the air gap between the magnets. One of the most unique characteristics of the motor is that simply machining the edges of the copper bars produces the commutator. Since commutator is built in, there is no need for a separate assembly. The motor uses neodymium magnet technology.