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We have to consider that it's Willie claiming confusion :).

Absolutely, Willie.

Now you're changing the rules of the game...you're saying the same thing as me, Carl...go big :D.

But I still maintain the point I made in my initial post...if the pull you can bring to bear on the moving block is multiplied already by the gearing in the GRCS, you'd be likely to have the capability to exceed rigging designed to match a 1/2 inch line. So go big :).

And you're right, the rope on either side of the moving block carries half the load that would be attached to the hook.

Here's an animation.

Fair point, Carl :D.

Perhaps the rope doesn't in that setup. But the hooks all do, as representing rigging attachments we need to beef up, don't they?

We need a diagram to discuss this one, methinks. But anyway, that 1/2 inch line at some point has to attach to the load, doesn't it? The single leg carrying the load at that attachment bears the full load that the ma brings to bear, doesn't it?

I'm not buying that one. The ma only increases the pull at the working end of the system, it doesn't spread that part of the load at all.

Not sure I'm following you, Carl. If you have the capability through ma to move bigger loads, the gear used to attach to the load, and to the anchor points, must be stronger, too...no?

The GRCS gives substantial MA as it is, no? If you're going to be needing so much lift/pull that a 4:1 block and tackle set, powered by the GRCS, is needed, you better be going big on all the rigging.