For a MWL equivalent cable, TSC retains it's weight and diameter advantage but suffers from practical limitations.
Flex C ™ is 5% smaller and lighter than PBO while Dyneema is 8% heavier and a masive 27% bigger diameter.
Kevlar was the original composite rigging fibre, however, fibre technoogy has moved a long way with the latest performance technology, Future Fibres TSC, witch is now 40% smaller, 45% lighter and 15% stiffer for the same MWL!
Break Load vs. Working Load
In the world of composite fibres we need to forget about Break Strength (BS) and think Maximum Working Load (MWL).
Traditionally aft rigging is specified to a break strength. In the composite world however, different cables/fibres have different fatigue curves and for the same break strength cables will have varied life. Therefore, the only way to accurately specify a composite cable is from its working load and then your cable manufacturer will apply their own factor of safety to determine a suitable BS for the given fibre and construction technique.
