Torsion springs use a ton of torque, that’s where they get their name. The engineered force is what makes these springs very effective and it creates their use. The twisting action which is built into the spring, which produces rotation. When that’s multiplied by the distance and length of the spring that ends up creating the torque or it can be called the moment.
Torsion springs are amazing springs because they offer this unique capability. Coiling Technologies makes impressive customized torsion springs.