What is a shunt wire?
A shunt wire is the wire that is part of a brush that you connect to the motor hood. This wire is made from very thin twisted strings of copper and are usually tin coated. The wires are very thin to make it as flexible as possible. This is done so that when a softer spring is used so it won’t stick in the brush hood. Some brushes are even available with two shunt wires for increased power but often cause a disadvantage due to sticking.
