For a fixed snatch block... This only changes the direction of pull and puts double the weight on the snatch block. For a 2000 lb item the line from the item to the block sees 2000 lbs and the line from the block to the winch sees 2000 lbs. Hence the snatch block sees 4000 lbs.
For a moving block.... Here the line from the snatch block to the fixed point sees 1000 lbs and the line from the block to the winch sees 1000 lbs. Hence the snatch block sees 2000 lbs.
As the angle of the line changes the equation to figure the line pull also changes.
A easy way to figure it is the count the lines hooked to the item you are trying to move. And a single pully snatch block always sees twice the line pull since it has two lines to it.
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Today's Featured Article - My Ford Golden Jubilee - by Troy Estes. This article is about my '53 Ford Jubilee and a story that starts with taking the tractor to my brother's Starter/Alternator Rebuilding shop for a wiring fix. The generator was shot as well as all the wiring. I dropped off the tractor expecting a transformation from a 6 volt to a 12 volt system utilizing the original generator housing, and a total rewiring of the whole tractor. The front end center pin bushing was worn also so I ask that they replace it if they had time. Well, that’s wha
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