Is the S190-640 a 6 lb spring? Also, how long is it? I have several coil balance springs that need replaced on double hung windows 32 x 62h and want to be sure these springs are long enough. The tallest window is 32" x 66h which I calculate will take two 640's on each side. The detents seem OK on all windows.
Not sure if I have single strength or double strength glass in vinyl insulated double glazed windows. Would it cause a problem to get coil balances that would carry more than enough weight? Instead of a 7lb an 8lb? Two coil balances that would carry 12 lbs instead of 11? If there are no negative consequences to getting coils a little stronger I will do that.
Please advise.
k carter
Concerning the S190-640
Handy Person from Washington DC Metro Area
Apr 22, 2013 3:00 pm
2 Replies
Paul from SWISCO
Apr 24, 2013 1:22 pm
Thank you for posting. Yes, our S190-640 is a 6 pound spring. Keep in mind that unlike other balance system, coil balance strengths add up when you calculate what you need to support your sash. For example, if you have a 12 pound sash, you will need two 6 pound springs.
As for the length, these springs usually stretch to 35". Would that work for you?
As for using springs that are stronger than what your sash actually is, I wouldn't recommend it. The window may not operator properly if your springs aren't the correct weight, even if they're a little stronger. You should stick with what was installed in the first place.
As for the length, these springs usually stretch to 35". Would that work for you?
As for using springs that are stronger than what your sash actually is, I wouldn't recommend it. The window may not operator properly if your springs aren't the correct weight, even if they're a little stronger. You should stick with what was installed in the first place.
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