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Old 11-16-2013   #21
Horserump, Colorado
Paddling Since: 1975
Join Date: Jan 2006
Posts: 458
The picture is a 2:1 MA to get a MA you need to have moving pulleys. If the pulley doesn't move you just have a bunch of change of direction pulleys. A quick rule of thumb is if the the moving pulley is on the thing to be moved it is an even MA (2:1, 4:1 etc.)if the rope is tied off to the load it is an odd MA (3:1, 5:1 etc.). You can also make it more complicated by tagging on an other MA to the system in place. I boils down to how much effort you want to put into lifting the load. I'd stick with the KISS principle less stuff to screw up.

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