Despite the name, torsion springs are subject to bending stress--not torsion--as the torque is carried through the length of the wound material. The spring coil's diameter reduces and the body length ...
The ends of the spring are attached to components intended to move apart, with the extension spring providing a reliable return force. This type of coil spring is closely wound when at rest; the ...
Although you can't see it in the video, a spring compressor is being used, but when the compressed spring clears the lower control arm, the tool fails sending metal parts flying all over the shop.