DIYbanter - View Single Post

In article ,
says...
ff wrote:

A coil spring is really a torsion spring formed in a spiral. When
compressed or extended beyond it's rest length the wire is being
twisted, not bending.

Hey, thanks Fred! I never stopped to think about coil springs working
that way, I just stopped at "Pull it and it stretches, pull it twice as
hard and it stretches twice as far."

And to carry this a bit further, the wire in a typical torsion spring is
primarily subject to bending, i.e., it's a coiled up beam.

Ned Simmons