I would just swap out the chassis on the trackmaster 2 (the ones currently selling on the market).
As for the trackmaster 1 version, some may require a triangle screw driver. You can get one on ebay. To make the motor works, make sure the metal plates sticking out at the end connects to the base metal plate. Hard to explain without photos.
As for the trackmaster 1 version, some may require a triangle screw driver. You can get one on ebay. To make the motor works, make sure the metal plates sticking out at the end connects to the base metal plate. Hard to explain without photos.