Talk:Torsion spring

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[edit] Wrong equation

The differential equation in the section Damped pendulum is incorrect. It is the equation of an ordinary gravity pendulum (Mathieu's equation), not a torsion pendulum. The nonlinear term − gsinθ only applies to the gravity pendulum, nor should the acceleration of gravity g or length \ell appear. The correct equation is:

I \frac{d^2\theta}{dt^2} + \gamma \frac{d\theta}{dt} + K \theta = 0

--Chetvorno 19:41, 16 July 2007 (UTC)

Completely rewrote Damped pendulum and Oscillatory motion of torsion pendulums sections to correct this error and present more useful information. --Chetvorno 19:10, 12 August 2007 (UTC)


[edit] Better terms?

I think the term torsion catapult clock in the 2nd paragraph is not used. I googled the term and didn't find a single reference to it. I think torsion pendulum clock is the term you want. --Chetvorno 20:18, 16 July 2007 (UTC)

[edit] Picture

Is the tortion spring this one? http://www.sterlingspring.com/images/torsion/torsion_spring1.jpg

Yes, those are torsion springs. That would be a great picture to add to the article. Can you get permission to use it? --Chetvorno 23:59, 29 July 2007 (UTC)

[edit] Use in firearms

Best I can tell, the springs inside most firearms to add resistance to the trigger are torsion springs. Can anybody confirm this? Is it worth adding to the article under Uses? --Asriel (talk) 19:46, 2 April 2008 (UTC)