Going Aloft; Ratchet Block? - SailNet Community

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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 10-29-2010
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Going Aloft; Ratchet Block?

I pull myself up the mast by first hoisting a double block up with the halyard, the hoisting line runs over that through a single at the bosun chair. I'm getting about 2.7:1 mechanical advantage. The problem is that each time I pull up a ways, I need to reeve the loose part through the lines on the chair to hold it. This is an old method that uses a single becket bend to secure. I can hold it temporarily by gripping all four running parts together. The other hand adjusts the knot. I think I can make this quicker and easier by using a ratchet block on the seat end. Then I can haul away to my work height, and make up the line with both hands while the ratchet holds me in place. Thoughts? Experience?
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this looks like a neat doodad:

Petzl*Mini Traxion Self-Racheting Pulley - Rock/Creek
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A ratchet block is not the way to go. They're designed to give you more leverage by taking some of the load off of the terminal end of the line, but they're not designed to hold the line by themselves. You'll need something like what QM has pointed out...which is essentially a block with a line jammer/clutch built into the cheekplates.
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I've used jumar's for a number of years. They're simple, bulletproof, and very reliable. They also use your leg muscles which for most of us are far stronger than our arms.

Ascender (climbing) - Wikipedia, the free encyclopedia

Of course, nothing beats getting a lift to the top via a windlass or powered winch.
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Old 10-30-2010
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I'm not thinking of using the ratchet block to hold me at the work spot, only to assist in going up. Instead of stopping every yard to adjust a knot, I'll go to the final height and tie off.
Ocean, I've looked at ascenders too. I just can't quite picture the setup. I don't use a winch or windlass as I am working alone.
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Old 10-30-2010
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Good idea Wonk, I've been planning on buying two ascenders (hadn't seen a gri gri) but I like your set up better. Thanks.
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Rock Climbing gear

I've done it with this setup ....
http:// www.newtribe.com/documents/tip4.htm

Tie a static line to your halyard and raise to top of mast, so you're not using the ascender on your halyard

and take a look at the ATN Top Climber videos for tips too

Last edited by RonRelyea; 10-30-2010 at 09:15 PM.
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