Coil Balance Help

A quick learner from West Chester, PA says:
December 6, 2021
Hi, I currently have the BF Rich Vintage windows installed back in 2002. When I unlocked this one window, the top came sliding right down. I am thankful it did not shatter. Anyway, attached are photos of the parts I need. By doing some re-search here on you site, I was somewhat educated on the names of the parts needed. Pivot Shoe(s) and Coil Double Support(s). I need all including the round coil that goes into the supports. If possible, I'd like to order for two of the same size windows. (8) double supports and the coils that go with them and (8) Pivot Shoes. Attached are photos that I hope you can identify easily.
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Tom from SWISCO responded:
December 10, 2021

I've seen this BF Rich balance system a couple times in the past, but we've never been able to track down an exact match. That said, our 15-228 pivot shoe is very similar in design to your original and may be used as a substitute, along with our 1/2" thick Series 160 coil spring and 15-150D double spring support.

Just note that I've never tried these parts myself and I cannot guarantee that they will work. They are simply my best educated guess. Look them over and see what you think.
A quick learner from West Chester, PA says:
December 10, 2021
Tom, THANK YOU! I have a couple questions. What should I do if I can not locate anything on my current coils to tell me what weight I would need? Also, the 1/2 coil double support shows only one hole to screw into the sash, how would I use these if needed? Could I use the current double supports I currently have and just insert the new coils?

Thanks
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Tom from SWISCO responded:
December 13, 2021

If there aren't any stamps on your current balance, you would get the precise weight of your sash and then divide that by how many springs support it; in this case, 4. 

So, for example, if your sash weighed 22 pounds, then you'd want two 5.5 springs on each side. Does that make sense?

As for the old covers, if they're still in good condition then you can absolutely reuse them, no problem.
A quick learner from West Chester, PA says:
December 13, 2021
THANK YOU!
1/2" Coil Double Support
1/2" Coil Double Support
15-150D
$1.57
Pivot Shoe, 17/32" Thick
Pivot Shoe, 17/32" Thick
15-228
$2.57
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