How do you build an electric motor without using permanent magnets?

Question

I need to build an electric motor without any permanent magnets with a power source no greater than 9V any help including diagrams would be greatly appreciated. Thankyou

Answer 1

To be an electric motor, you must have magnets pushing against each other. If you don't want to use permanent magnets then you need to use electro magnets. This is a very common kind of motor and is called a universal motor. It can be wired as series or parallel - this describes how the electro magnets on the stator (the ones that dont move) and the communatator (the ones that do move) are wired together.
A squirrel cage motor has no permanent magnets but a field is induced in the squirrel cage (hence its also called an induction motor) by the stator windings. This creates a magnetic field to push against i.e. bocomes an electromagnet.
You can build a very simple motor using a compass (ok that is a permanent magnet) and winding some coils of wire around the casing and then connecting it to an ac field. This has only 1 moving part - the compass

Answer 2

Why don't you try using the power of prayer to make the plane fly? Just kidding. No such thing as a magnetic motor. Rubber band planes are common, but there's a reason for that. Rubber bands have the best energy and power density, aside from compressed air, but you're not allowed to use that. After rubber bands comes metal springs, like you might find in a mouse trap.

Answer 3

SImple, both the armature and the fixed magnet are electromagnets.

or Look for a kit online.

Answer 4

You can use electromagnets in place of permanent magnets.