Assembly instructions for kit #16
6
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All rights reserved. 2014 Simple Motors, LLC
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Your motor is ready! Depending on the coil position the motor may start immediately or you
might need to give it a slight push. The motor usually spins in one direction so you should
try to spin it slightly in both directions.
This kit allows to experiment with the magnets of different strength (ceramic magnet is
grade 5 or 8, and neodymium magnet is much stronger grade N50). You may also change
the distance between the coil and the magnet by moving the bricks along the base plate (3
different positions shown in steps 8, 9, and below).
If your motor doesn't work, ensure that the rotor is balanced and can rotate freely and
check the insulation. Properly removed insulation leaves shiny copper on one end. Half of
the other end should also have shiny copper color while the other half should be the color of
the original insulation as shown in step 3. Make sure the battery is fresh. If the motor still
does not work – check Troubleshooting section at our web site at
.
Clean carbon buildup (black stuff) on coil ends and metal stands often.
CAUTION: Do not leave the motor connected to the batteries if the rotor is stalled. This
motor consumes a lot of electricity and could drain the batteries quickly even if it does not
spin.
How it works
When un-insulated (bare copper) parts of the coil wire contact the metal stands the current
from the battery flows through the coil making it an electromagnet with North and South
poles. This electromagnet interacts with the permanent magnet (North and South poles
attract each other while the same poles repel). Motor starts to spin until the contact is
broken when an insulated part of the coil end comes into contact with the stand. However,
the coil continues to spin due to inertia and then the process continues. Technically
speaking this motor is a single pole pulse motor.