View Full Version : constant force springs - calcualtions

05-09-2007, 06:01 PM
I am a little lost with the calculations around constant force springs, hopefully someone can help.

Using this data:

.025" thick
1.50" wide
60 inch long
8.74 Load in Lbs
3.35 Outside Diameter
3.70 Inside Diameter

Can anyone tell me how I would calculate how many times I can wind the spring prior to it's fatigue?