Extension Spring Sizing

Avis

I'm in need of an extension spring with some specific requirments:

Material: Stainless Steel
Diameter 0.75inch
Rest Length: 5 1/2inch inside the hooks
At 7 inches a forcle of 10lbs
At 10 inches (full extension) a force of no more than 20lbs (As low as possible)

Any idea on how to size this spring? What diamter wire will it need to be etc.

ginarose12

Hey Avis...I think you would be able to find what you're looking for at this website. They have a huge range of extension springs, and I've had success before. All the best!

http://stanleyspring.com/

Mech_Engineer

Take a look at Century Spring's online spring calculator: http://www.centuryspring.com/Store/search_extension.php

Avis

Hey, thanks guys! I found an off the shelf spring that is almost perfect! Can't complain with that!

ginarose12

You might find luck at this site....

http://stanleyspring.com/

I know they have a lot of different springs. I'm not too sure if they have the type you're looking for, but I'm betting they do. Good luck, Avis!