Simonton sash support coil balance

Contractor from Cofton, MD

Mar 23, 2025 3:30 pm

I need the above named part including housing, barrels, coils, etc. for complete replacement. Attached photos show the part, whioch contyailns no visible numbers or indentifying marks.

2 user uploaded images

8 Replies

Bob from SWISCO

Mar 23, 2025 11:12 pm

Thanks for posting. This old Simonton coil balance system is no longer made. Fortunately you can replace it with the 15-259 Pivot Shoe and Series 159 Coil Balance springs. See the video below for details.

Contractor from Cofton, MD

Mar 24, 2025 11:34 am

Thanks! I assume I will need all the parts mentioned in the video, right down to the pivot bars. Pleae corredt me if I am wrong. I also assume this single coil spring is enough to support the window that required to springs originally.
Jim Farrell

Bob from SWISCO

Mar 24, 2025 2:57 pm

Hey Jim. Since the Series 159 springs are calibrated a little differently, the best thing to do is to weigh the window sash that these coil springs support. Give me that exact weight and I can work out what you need. Also see the video below.

Contractor from Cofton, MD

Mar 24, 2025 3:27 pm

Sash weighs 25 lbs . Thanks Bob!

Bob from SWISCO

Mar 25, 2025 2:50 pm

Great! in that case you could use just two of the S159-12 12.5 pound springs, one for each side of the sash. This would equal 25 pounds of support overall. Let me know if you have further questions!

Contractor from Cofton, MD

Mar 25, 2025 8:14 pm

Bob,
I think I'm ready to proceed. Thanks a million!
Jim

Bob from SWISCO

Mar 27, 2025 3:10 pm

Glad to hear it, Jim. Let us know how you make out, or if you have any other questions!