Help with spring rate
Help with spring rate
(OP)
Can someone tell me how to figure the spring rate of a torsion bar? For example, if I have a 4130 bar 29" long, 1" in diameter, with a 5" lever on one end, what will the spring rate be. I just dont want the answer, but the forumla.
Thanks.
Thanks.





RE: Help with spring rate
Where J=(Pi*D^4)/32
G - Torsional Nodulus
J - Polar Inertla os the bar section
D - Bar Diameter
L - Bar length
K - Spring constant