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Garage door spring thoughts

Sugarkryptonite

Active member
Joined
Feb 3, 2016
Messages
25
Hi guys

For context I had a 9' wide x 8' tall garage door. It's layout was as follows: 4 x 24" panels, one torsion spring (0.250" x 2" ID x 30" long). The total weight of the door was 173 lbs. It worked well. I had the spring cranked about 32-33 1/4 turns (around 8 full turns).

Now, I have modified the garage door with some of the same panels that I had (I had bought 2 x doors and only installed one, mixed and matched the panel sizes). Now I have the following: 24", 21", 21", 24", 21", totaling 111" total height. The new weight of the door is about 192 lbs.

I have added 19 lbs to the door, and 15.5" total height.

Wondering what your thoughts are about my current spring situation, and or thoughts about which spring I should switch to exactly if needed?

I thought about going with dual springs, but having trouble deciding on the sizing. I thought maybe 2 x 0.243" x 2" ID x 30" long from some research I did online, but not 100% sure. I can install myself.

I just modified the door today and installed. Have not installed the spring yet, as I was still deciding what to do.

Before and after pics just for fun

2023-05-11 18.26.32.jpg

2025-05-24 18.32.46.jpg
 
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Lorydr

Well-known member
Joined
Sep 10, 2015
Messages
658
Location
Piqua, oHIo
Restore the door back to it's previous configuration of 4 panels. That's where it worked well. Done.
 
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Sugarkryptonite

Active member
Joined
Feb 3, 2016
Messages
25
I think DDM has a calculator on their site:
Appreciate your response. I had saw that on their site already, and unfortunately their calculator only seems to go up to a door height of 8'. My door is 9.3' now...unless I missed it somewhere on their site.

Anyway, I ordered a couple different springs a bit larger than what I have to see if it works. I have the original spring back on now with the new larger door and it still does the job. I will be switching to a dual spring setup just for longevity and safety.
 
Last edited:
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Sugarkryptonite

Active member
Joined
Feb 3, 2016
Messages
25
For anyone looking at calculating springs in the future, I have found a great free tool.

SSC Spring Engineering has graciously provided us with phone apps and even a desktop app. Let's you calculate garage door springs depending on door dimensions, weight, how many springs you want, etc. Invaluable tool.

 
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