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Kenny, "Rule of thumb is 1unit for static, lift 1' and drop 1' is 2units force." I humbly submit that do the catch on undersized rope and the slowdown is slow with smaller force, do the catch on a stout chain and the stop force spike is huge. How the motion is stopped completely affects the...

I think if the guy line is tensioned, it's closing the gap in performance but the two block has a better "down rope" vector situation, going in line with the far lead and the main trunk. IMO In a practical sense achieving tension in the guy would be a pita, whereas the two blocks automates the...

I get you're making reference to Donzelli's fate, similar failure, purportedly a groundie mistake triggered a weak trunk spot. I managed to (accidentally) duplicate one of his measurements showing 20% higher tension in one side of the rope going through a standard rigging point pulley, Since...

Anybody here ever meet Peter Donzelli? Any insights on the man?