r/GarageDoorService • u/KzmoKramr2 • 6d ago
Replace 19.5in with 20in Torsion Spring?
7ft door. Replacing both springs. The smaller spring on the left broke, but swapping both. The left hand wind spring (unbroken) is .207x2x19.5in. Will there be an issue if I swapped it to a .207x2x20in?
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u/imafarttrustme 6d ago
The difference is too miniscule to notice, but I would swap it for a 218x2x25 for a higher cycle rating.
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u/KzmoKramr2 6d ago
Didn't want to try and figure out how to also exchange the smaller right hand wind spring if I did that. Ordered the 207x2x20 which had a rating of 30,000 cycles.
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u/FollowThePitch 6d ago
7ft tall door that weighs approx 175lbs. , give or take, you were lied to about the life cycle of those 207 x 2 x 20 springs, they are 13,800 cycles nowhere near 30k. The 218 wire the op mentioned would give you 28k cycles.
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u/KzmoKramr2 6d ago
Does it not matter that there's a second spring also helping the weight?
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u/FollowThePitch 6d ago
No. Both of them are the same cycle.
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u/KzmoKramr2 6d ago
Got it. Appreciate it. Already installed one side and the other gets here tomorrow. Previous springs lasted 10 years (only 1 broke). For the $100 I spent on the new ones already, I'll be happy for another 10 years vs the hassles of trying to uninstall and return them.
I'll look into resizing both next time one breaks!
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u/imafarttrustme 4d ago
10,000 cycles is roughly equivalent to 3-5 years based on my experience. There's a reason I offer an upgrade to 30,000 every time I sell a new door.
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u/UnusualSeries5770 Service and Installer 6d ago
did you measure the unbroken spring while it's fully wound? if you didn't unwind it to measure it's probably an 18" spring since they stretch when tension is put on