Join Date: Feb 2014
Location: S Ontario rivers plus various lakes for warm water species.
500 degrees for an hour…? springs can be small and thin. This is a metalurgy question, regarding tempering. From what little I know, a small spring can only spring so far as it is able; heated again after the event or not. If increased tension/ spring is required, find a heftier spring.
Having discussed the subject with W. Petrevan, who himself was after the Holy-Springy- Grail, for his reels, thicker and suitable sprung steel, is the way to go,