Looking into this further I don't see any advantage of a rope more expensive than Amsteel Blue. Smaller diameter is actually a disadvantage in finding a snatch block that is rated at 20 tons.
Does the radius of the 'groove' of the sheave need to match the radius of the rope used? Seems like you could use a block made for a bigger rope without issue.Looking into this further I don't see any advantage of a rope more expensive than Amsteel Blue. Smaller diameter is actually a disadvantage in finding a snatch block that is rated at 20 tons.