Originally Posted by NLBwell
Yeah, it varies for everyone. I strung kevlar in my ProStaff 85 at 62 lbs for about 15 years and never had a problem. Since I tore my elbow tendon (due to non-tennis factors) I now have to be really careful about what racket and strings I use.
A hitting partner of mine had the pro staff 85 with kevlar, that was the lowest powered set up that I have ever tried.