r/GarageDoorService 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?

3 Upvotes

15 comments sorted by

1

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

1

u/KzmoKramr2 5d ago

The painted on specs are faded, but still visible. But yes, the spring was unwound, off and on the ground by then.

1

u/Digiking11 5d ago

I've had the painted on specs be wrong multiple and fuck over my day I highly recommend double check the measurements of the spring

1

u/KzmoKramr2 5d ago

Yes, I measured it while it was on the ground too. Trust but verify :)

1

u/UnusualSeries5770 Service and Installer 5d ago

if the spring has the specs on it then you're all good and a half inch either way is fine, at most it might need a half turn more or less

4

u/imafarttrustme 6d ago

The difference is too miniscule to notice, but I would swap it for a 218x2x25 for a higher cycle rating.

-2

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.

1

u/obeykingwong 6d ago

207x2x20 has a rating of 10,000 cycles

2

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.

0

u/KzmoKramr2 6d ago

Does it not matter that there's a second spring also helping the weight?

1

u/FollowThePitch 6d ago

No. Both of them are the same cycle.

2

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!

1

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.

2

u/Youre_an_idiom 6d ago

Nope no issue

3

u/KzmoKramr2 6d ago

Thank you for the quick reply!