AC Speed Controllers
These work with both the GPG Performance Motors and the Maili Titan Budget Range (though the plugs differ!)
It will also work with Standard motors from other brands, but will need to be wired properly due to the different types of plugs and sockets used by different manufacturers.
Make sure you order the correct wattage unit as you can damage both the controller and the motor by using the wrong size control !
Requires a tachometer generator fitted to the motor (ie a Speed Control Motor)