Gin-Pole Mast raising system - Page 2 - SailNet Community
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post #11 of 18 Old 11-23-2010
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Wow! $250.00 is a lot, I think I paid $160.00 for my new one and I still have the old one. The old one is for a 26X, the new ones are for the 26M but work on the others. What Mac 26 model do you have? The gin pole kits are specifically made for MacGregor boats that is why they charge a premium and the new ones come with a brake winch so they are a bit pricier. The old ones like my old one incorporate the use of the headsail winch to hoist the mast from the cockpit whereas the new ones have the winch on the gin pole so you can just stand there and crank up the mast. Perhaps you would like my old one???
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post #12 of 18 Old 03-24-2017
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Re: Gin-Pole Mast raising system

I'm resurrecting this older thread to get some clarification on an idea on saw on the Cape Horn site (Mast Stepping System). Gelinas describes using a "hinge" on the cap shrouds (upper shrouds), which, from what I gather, is something like this: http://hayn.com/marine/rigging/images_rigging/RF12.gif . It's not clear to me how this would attach to the shroud, or how it would remain in position - in line with the mast step - while lowering or raising the mast. If someone could explain this to me better, I'd appreciate it. Is this hinge permanently attached, perhaps?

(I realize there are other ways to skin a cat, I'm only asking about this one method and how this "hinge" works. I was planning on bringing my mast down using a pole and "shrouds" passing through a ring held in place by lines going in four directions, but this use of the cap/upper shrouds was new to me.)

(bonus material: While trying to find an image for what I was just describing, I ran across this image, of what looks like a permanent setup to do the same thing Gelinas describes: http://www.yachtflyers.com/forum_ima...OT_BINGHAM.gif )

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post #13 of 18 Old 03-24-2017
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Re: Gin-Pole Mast raising system

In the book "Sea Wolf" Jack London describes raising the masts on that vessel by the captain alone. It might not help you much, but it's a great read. lol

"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.

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post #14 of 18 Old 03-24-2017
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Re: Gin-Pole Mast raising system

I can see what they are after. In order to keep the distance from the top of the shroud to the bottom constant as the mast goes up, it must hinge at the same axis as the mast step hinge. I don't see how the rigging you showed would work. Seems to me that it would need to be supported pretty far off the deck (at the height of the mast step). Maybe you could rig a temporary, or permanent mini shroud for the shroud hinge.



Otherwise, you may be able to find some other way to take the slack out of the shroud, and release it as the mast goes up.

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post #15 of 18 Old 03-24-2017
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Re: Gin-Pole Mast raising system

OK, a little bit more research indicates that it looks like Gelinas left out how he stabilizes the hinge on the cap shrouds, since I found a few descriptions that stress that the axis/pivot point should not change:

"What you must do is stabilise the mast sideways as it goes down. Your SS plate lugs may be strong enough but there are many Al ones around here that snap off like chalk if the mast swings sideways.
You can stabilise the mast easily with a mast head rig with cap shrouds square to the mast. You extend the chain plates with a tube so that the cap shroud can only pivot back from a point opposite the mast hinge. The tube is stayed forward by a wire or rope to stop it pivoting back. So the cap shrouds remain tight all the way from vertical to horizontal so no side sway.
Read more at Is this mast foot designed for lowering without a crane? - Page 2 "

I think I'll stick with the ring stabilized by lines and not worry about using the shroud for this.

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post #16 of 18 Old 03-24-2017
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Re: Gin-Pole Mast raising system

Klacko Spars Ltd. of OAKVILLE!!!
Never tried this but it looks like a slick system using the spinnaker pole car.

That is a horse head in the box. Not an alien!
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post #17 of 18 Old 03-25-2017
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Re: Gin-Pole Mast raising system

Happens I put my mast up using my gin pole rig just the other day.


Main halyard to end of boom, main sheet block to end of boom (actually have an extension rope to reach it), an adjustable wire rope bridle that attach to pad eyes on the coach roof even with the mast base then hooks to the boom about 2/3 of the way up. Hook everything up, tension the temp shrouds to keep the boom running straight, cleat off the halyard.



From there, I just slowly take up the mainsheet and everything scoots on up. Usually just past the point you see here, I cleat everything off and go look to make sure all the shrouds are going to go up without getting into a bind or snagging on things then resume tugging it on up. I could of course opt to use a winch but in all reality, this one goes up pretty smoothly and doesn't take much effort. Once it's straight, I cleat off the main sheet, attach the back stay and my rear most lower shrouds and then put everything back to "normal".

Basically the only thing aside from the parts of the boat which are needed for it to be a sailboat anyhow are the pad eyes on the coach roof and the bridle for the boom which coils up and takes up basically no space.
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post #18 of 18 Old 4 Weeks Ago
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Re: Gin-Pole Mast raising system

I haven't read all the replies so this may have already been said.
Position the mast at the step. Lash your boom to the base of the mast at a 90. Use some nylon dock lines or anchor rode--you want stretchy--to guy it laterally by going from the top of your vertical boom, a full turn around the hull and up again on the other side. Set up the aft shrouds only. Use your mainsheet block from the top of your boom to a strong belay point near the bow. A helper can lift the mast as you work the block and tackle--the higher the mast gets, the easier it gets. Do it someplace/time when the water is calm.
I did this a lot on a 22 foot boat so the forces on yours will obviously be greater, but if your gear will handle the weight and you set it up patiently, Archimedes will smile down on you.
JV
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