Broken coil balance springs

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Handy Person from California

Jul 9, 2024 2:56 pm

20 YO Simonton window.

Part # 80102
# 6.5 35" P

5 user uploaded images

8 Replies

Casey from SWISCO

Jul 10, 2024 3:09 pm

Hello,

Your pivot shoe resembles the 17/32" thick 15-199. This shoe uses either the (1/2") S160 or (3/8") S165 coil springs. The compatible covers can be found under the related items section of our product pages if needed. Thanks for posting!

Alternate view of 15-199

Handy Person from California

Jul 11, 2024 3:29 pm

My shoes measurements match 15-199.
my coil springs are 1/2" which matches s-160....I believe I need the 6.5# ones? Are there two or four per window....mine are broken up in pieces and I'm not sure how many to order.
thanks

Casey from SWISCO

Jul 11, 2024 3:45 pm

Coil balances generally use between one and three coils on each side. If you're not sure how many coils the window used originally, we'll need you to confirm the exact weight of the sash that the balances support. That will help us determine the corresponding springs needed to support the sash.

Handy Person from California

Jul 12, 2024 3:43 pm

I am trying to borrow a neighbors scale.....but doesn't the last picture show the coil support as being double?....it has a place for two coils and witness marks as well?....maybe there was only one coil installed on the two coil support? The coil was broken and I only found two ends....?

Is the weight of the springs equal to weight of window? My springs have #6.5...which if one per side would be 13#?...so the window would be 13# and would require two spring....if the window was 26# then it would require four 6.5# springs?

thanks for your help

Casey from SWISCO

Jul 15, 2024 8:23 am

You are correct that your photos show a cover for two coil springs but it sounded like you were unsure if that was the correct configuration so we like to cover all of our bases. You are correct that one 6.5 coils on each side would support a 13-pound sash and two 6.5 coils on each side would support 26 pounds.

Handy Person from California

Jul 15, 2024 3:02 pm

uugghhh....I'm a dork!!! I was only looking at one side/half of the window brackets/springs!!! I did weigh the window at 22.7lbs Looks like I will need two springs per side at #6.5

coil spring S-160 X4
pivot shoe 15-199 X2
1/2" coil double support 15-150D X2

Casey from SWISCO

Jul 15, 2024 3:22 pm

For a 22.7-pound sash, I would actually recommend using two S160-05 coils on each side. The 6.5-pound coils would be too strong for your sash weight.