stepping(raising) mast w/o crane - Page 2 - SailNet Community
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post #11 of 15 Old 12-20-2009 Thread Starter
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I'd love to see a pix or diagram of the onboard gin pole( using boom or spinnaker pole ? ) with jib halyard & vang assembly. A cable assembly came with the boat, fits the description of the side guys so shear shouldnt be an issue. Will I also need a second pole to help lift mast thru the first several feet of raising ? Thanx
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post #12 of 15 Old 12-20-2009
..........huh?..
 
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Pat,

OK, let's try a drawing first and see if you can make heads or tails from my poor artistry. The picture below shows all the gear lashed up as it is sitting with bottom of the mast loosely fastened to the tabernacle and the upper end resting in the mast crutch. With some experimentation you can rig it so your line lengths allow you to winch the mast up in one sweeping arc. It's a matter of matching the available length of your vang or mainsheet to your halyard. On mine, the vang is just barely long enough so I've made a permanent mark on my halyard where it needs to be cleated off at the mast. The shrouds and back stay are left connected while the mast is down, as well as the top of the fore stay. As you slowly winch the mast up keep a watchfully eye on the shrouds and stays so they don't tangle as you raise. When you reach vertical, connect your fore stay and you're done.

I've seen a lot of setups that use a post permanently mounted on the trailer that places a boat winch a few feet above the bow of the boat and utilizes the halyard an side guys only. From what I've seen, that works well too. I think the key to safely raising the mast in either case is the use of well designed side guys (ones that prevent the mast from toppling sideways throughout the arc). The one advantage I can see to my method is that it allows for lowering or raising while on the water if need be, although I've never done it.

If you can't figure out my chicken scratchings, let me know.

Doug

S/V Boccata d'Aria

I'm not sure what Dickens are, but I think they may be important and I sure as hell don't want them scared out of me.......Izzy
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post #13 of 15 Old 12-20-2009
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On the J24 the pad eye for the spinnaker pole downhaul is in the perfect location to stand up and old 20' section of J24 mast.

We use a shorter head stay and run two shrouds back to the lifeline stations and then the winches and wind them up TIGHT

NOW you have a rock solid 20' lift in the RIGHT location

We know from trial and error that the bridal we lift the mast with has to be X feet up at the balance point of the mast .

One person pulls on the 4:1 block and tackle lifting the mast and one person guides the base and walks it back as its lifted when its straight UP we place it and start hooking up the standing rigging

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1981 J24 Tangent 2930
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post #14 of 15 Old 12-22-2009
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mast raising

You need a couple friends with large boats. Place your boat between them and rig a block and tackle from the intersection of their halyards. Tighten their halyards until the masts are tipped to center and then use the block and tackle suspended from their intersection to raise your mast at the spreader. Use a slip loop to allow it to slide down when stays are installed.
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post #15 of 15 Old 01-24-2010
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I thought I had posted this but I seem to be wrong. Found this on youtube it is very interesting.
look for mast raising whilst underway
Look at the speed he is going while getting the stick up.
Casey
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