More rope mechanical advantage: the 7:1

Here is another video on mechanical advantage in rope systems, this time showcasing the 7:1. I'll show you three different methods to create this somewhat uncommon pulley system.

[samuelmejiacarmona.english]

Amazing videos. Thanks for taking the time and answering. Now i can create on a piggy system a one rope bridge and have fun with my family crossing a small creek.

[wbymag]

Your videos are wonderful! I don't believe anyone I know understands how pulley systems work, or how to use them, and I am utterly fascinated with pulley systems. I hunt every year, and I carry lots of rope and pulleys, just HOPING I'll have the opportunity to haul a big animal up a mountainside. I have studied the methods used to haul victims in vertical and high-angle rescues for a long time, and all of it can be put to use when hauling game or just moving heavy objects. It just fascinates the heck out of me.

[raymondcava]

Thank you for posting,
I’m starting to understand how this all works. I have no real application for all of this but it’s interesting to watch they see the mechanical advantage.

[zoobiewa]

Where can you buy triple sheave pulleys? I've been looking but can't find anything that looks like it could hold much tension.

[robertducat-qpqy]

Where do you get those triple pulleys please?

[seanrhone]

Something I've never understood, maybe you can answer. Let's say you're lifting a 1800lbs, using the 7:1 shown here. Do the blocks have to be rated for 1800lbs or less, since the advantage?

[bowlineobama]

I don't see 7:1. How are you adding the Tensions?

[robertducat-qpqy]

Sir, thank you so much

Wish you could see what I am getting ready to do now. Unload a wood splitter from the back of my wife's pickup on a 9:1.