I don't think the size KR Flyers I've seen would be able to overstress 1/8 inch cables. That's about1600 pounds. I think we need another area to "worry" to pieces.
Stops at both the input and output are advisable. In a tailslide, the rudder can be flipped by aerodynamic forces. Rudder pedals can almost surely damage KR rudder horns and hinges. There's no reason to not have adequate control stops at both ends. Ron Freiberger mailto: rfreiber...@swfla.rr.com