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Go Back   SailNet Community > On Board > Gear & Maintenance > stepping(raising) mast w/o crane
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Thread: stepping(raising) mast w/o crane Reply to Thread
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Topic Review (Newest First)
01-24-2010 05:05 AM
casey01 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
12-22-2009 09:47 AM
roline
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.
12-20-2009 03:32 PM
tommays 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
12-20-2009 01:58 PM
Izzy1414 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
12-20-2009 09:15 AM
sentientpat 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
12-20-2009 06:10 AM
Maverick1958 I don't know anything about stepping a mast thought I will be learning soon as I have a hinged mast on the boat I am restoring. My main reason for wrighting is to tell Izzy that the Dickens comnent is about the funniest thing I have heard in a long time!
12-20-2009 05:10 AM
Izzy1414 Pat,

I safely step my similar sized mast singlehanded without the aid of outside structures. I use a gin pole, the jib halyard, my vang tackle and some custom side guys that I made out of nylon 3 braid rope to counter the side shear Faster mentions. Takes me about 30 minutes from the time I pull up to the launch. If you would like, I'll take some pictures or try to draw some. Let me know.
12-20-2009 03:48 AM
wind_magic I think the hinge step that everyone is talking about is called a tabernacle.

Edit, by the way, I have heard of people using bridges to raise and lower their mast.
12-19-2009 11:58 PM
tommays On the J24 the mast is keel stepped so it has to be raised and then lowered 3' through the deck

We setup a 20' Gin Pole on deck that can do the 19' lift require to stand the mast UP straight and keep control of it with no WORRY duty
12-19-2009 09:05 PM
TQA I have been a member of a team of 6 who did this on a 30 footer with a pretty big stick. One each side with mast head ropes, two pulling it up with the SPI pole as a gin pole and one restraniing things.

Team member 6?? Worry bead duty.
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