Need help calculating garage door torsion spring

[shodan]

I have just purchased a new home and it came with an uninstalled garage door.

The door panels came with vertical and horizontal tracks, complete spring assembly but no brackets nor cables.

First thing I want to do is calculate what spring I should have and then calculate what spring I have.

I'm going over there later today and I'll measure wire size, inside diameter and length.

I calculated that the door weights 229 pounds and it is 9 feet wide and 8.125 feet high.

I forgot to measure track radius and I'll get that later tonight.

For now I would like to know, how can I tell which spring I need based on my values of door size, weight and track radius ?

Thanks
JF

[TJR]

Read and download this. Includes free trail.
Spring Engineering Software

[shodan]

Thanks, do you know what the difference between IPPT and TIPPT is ?

[Lone Star Charles]

Scroll down to the bottom of this page, fill in the blanks, and it will give you an answer.

Standard Garage Door Torsion Springs

[TJR]

Nice, did see it some time ago, but didn't give a second thought.