timothy42b
Eagle Member
With flexion forces can actually peel open the fingers, but with extension, my fingers peeling open are not the failing point because the knuckles are locked in and so the failing point becomes friction but I also have more finger pad surface area contact for more friction with extension. In practice, I'm not sure if the disc ejects from flexion more from friction slip or fingers peeling open first though.
That was interesting info about the climbing grips. I didn't know any of that.
For me it raises some questions about what really happens when the disc "rips." Especially after the recent Overthrow thread and some of the Uli comments on upshots.
A climber's grip can support his/her bodyweight one handed. I don't see how a light disc you're waving at the end of your arm can overcome that amount of grip. If I do a max dead lift and hold, my fingers will go from curled around the bar to straight as they tire, and the weight will drop. I think that's the equivalent of what you called peeling open. Probably that doesn't happen with a throw.
I think the actual disc rip might be more of a sideways prying action, where the force becomes friction from your pinch, based on holding a disc and pulling it various directions, but I'm not sure.