Running the truer/cleaner on a separate power pack negates the need to use track power and a hand controller, allowing you 2 free hands to move the car over the pads. A variable voltage power supply will allow you to increase the motor speed when truing the tyres and reduce the speed for cleaning them. Remove the sanding/cleaning pad and it can be used to run a cars motor in at low voltage when using the variable power supply.
Running the truer/cleaner on a separate power pack negates the need to use track power and a hand controller, allowing you 2 free hands to move the car over the pads. A variable voltage power supply will allow you to increase the motor speed when truing the tyres and reduce the speed for cleaning them. Remove the sanding/cleaning pad and it can be used to run a cars motor in at low voltage when using the variable power supply.