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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Gin-Pole Mast raising system
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Thread: Gin-Pole Mast raising system Reply to Thread
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Topic Review (Newest First)
11-23-2010 10:10 PM
TakeFive I just lowered the mast on the Catalina 250 two days ago. This was my first time and I made my own gin pole. The Catalina 250 is designed to be trailerable, which makes stepping the mast much easier. For instance, both the upper and lower shrouds are behind the mast (thanks to the swept-back spreaders), so they loosen as you lower the mast. There are no forward lower shrouds to remove - just the forestay, since the mast pivots toward the cockpit.

While your mast may step differently, perhaps you can get some ideas from my setup.

Here is my gin pole, which worked great:




That is a 20 year old spare tire bracket used to attach the pole to the mast. A new one that I had bought was heavier gauge rod, which left insufficient room for the nuts on either side of the 2x4.

The only thing I might change with the gin pole is to put a different winch on. It was pulling pretty hard against the short handle, and though I never lost control, had I let go I would have never regained control with the ratchet disabled. It would be nice to find one with adjustable friction brake. Does such a winch exist?

Here are pics of the pole rigged up. The red ratchet straps kept both the mast and pole in column by connecting to bails on the stanchions, which on the C250 are conveniently aligned with the stepping bolt. (Catalina sells "baby stays" for the mast, but they were pricey and would require me to wait longer than I was willing.) Since the straps do not have pelican clips, I used duct tape across the opening to ensure the ones to the mast did not fall out. You'll see two lines coming off the top of the pole. I used both the jib halyard to the top of the mast AND made a harness to run a second line to just beneath the spreaders. I wanted redundancy for this critical function. The red bucket in the pic is there to put the furler into so it does not scratch up the figerglass:






My biggest delay was caused by difficulty disconnecting the forestay. The C250 has a split backstay, so releasing the one on the port side (which has a shackle for this purpose) would loosen the backstay nicely. But I could not get the port backstay shackle to release because it was so taut. I had to turn to backstay turnbuckle (inconveniently located about 7 feet above the cockpit) 20 turns and have a friend pull down as hard as he could on the backstay to get the port shackle to release. After that I was able to easily remove the forestay. The owners manual gives no hint that releasing the forestay is so complicated.

My crutch for supporting the mast did not work perfectly, largely because I could not find a good place to secure it in lieu of extra gudgeons on the transom. (Rudder does not remove easily because I have wheel steering.) I used a bimini swivel with removable clevis pin attached to a metal loop welded into the rear pulpit to bear the brunt of the weight, and a broom clamp below it to keep the pole vertical:






The moment arm was awfully long, so I relocated the parts to shorten the crutch. It was stable enough to support the mast once it dropped, but when we removed the step bolt to walk the mast forward, the forward force on the crutch was too much (even with the roller) and the broom clamp released. I ended up reinforcing it by lashing to the pulpit, but I'm uncomfortable with relying on the pulpit since it's just attached to the fuel locker with nuts and small washers. I'm afraid a good wind storm against a tarp could put too much pressure on the crutch and damage the pulpit or fuel locker. So after I took these pictures I lashed an 8' 2x4 across the perch seat pulpits and set the mast on it for the time being. I need to find a better alternative for under the tarp, so I'm thinking I'll put a sawhorse across the cockpit lockers.

11-23-2010 09:09 PM
CaptKermie 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???
11-23-2010 08:34 PM
helsen1
Mast Raising

Quote:
Originally Posted by rbrown77138 View Post
I just finished a mast raising system on my Helsen 22'. It is 12v operated and is glass laid over my deck. When it is down, you can barely see it. This might be a little over the top, but take a look. You can see it on Youtube, just type in "mast stepping A frame" and you should reach it, also on my channel is a 12v operated keel, Bob.
I have a Helsen 20 and am interested in seeing what you built as I am starting to devise something for my boat. Any photos available?
07-15-2010 11:04 PM
PBzeer The trailerable Hunters use a gin pole system for mast raising (I beleive Hunter has a video, or link to it, on using the system). Basically, the mast has a hole in the front section into which the pole is inserted. The pole has two opposing eyes on the other end. The jib halyard is hooked to the top one, and the mainsheet (4 to 1) is hooked to the other, as well as to the anchor padeye in the anchor locker. You then use the mainsheet to raise the mast (with the side shrouds in place). I could raise my 28 foot mast on my H26 by myself.
07-15-2010 06:36 PM
mattu lydanynom,
I'm not really positive about anything on this boat yet. I new to cruisers. It seem that if I just use the bow plate, there would be too much tension on the 88 plate and cleats. without a pole the angle seem to acute and I thing getting the mast up would require too much muscle.
07-15-2010 06:33 PM
rbrown77138
Mast stepping A frame.

I just finished a mast raising system on my Helsen 22'. It is 12v operated and is glass laid over my deck. When it is down, you can barely see it. This might be a little over the top, but take a look. You can see it on Youtube, just type in "mast stepping A frame" and you should reach it, also on my channel is a 12v operated keel, Bob.
07-15-2010 06:11 PM
mattu
thanks for the clarification John

Quote:
Originally Posted by JohnRPollard View Post
Most gin-poles I've seen are dock-mounted, manual (hand winch) cranes used for stepping and unstepping masts from boats that pull up alongside.

Are you asking about a system to raise and lower your deck-stepped mast, by pivoting at the tabernacle? If so, most folks just use a spinnaker or whisker pole, or the boom, as the offset.
I was guessing that it was called a gin-pole. Maybe I can just get a spinnaker pole. I would be hesitant to use me boom because I keep my sail folded up in it.

I was hoping that someone might know of a good outlet website that may have a lot of spare parts.
07-15-2010 05:41 PM
sailingdog You can also use a simple A-frame to do this. The advantage of an A-frame is that it can help keep the mast aligned fore-and-aft properly while raising or lowering it.
07-15-2010 05:29 PM
lydanynom
Quote:
Originally Posted by mattu View Post
I need to fit my Mac26 with a mast raising system. I know it just a pole and some blocks. I called bwyachts and they tell me I have to buy the new kit (crank wench) for $250.00!

Anybody know a place where I can get my hands on a gin-pole?!
Are you positive that you need one?

For my SJ21, I shackle my jib halyard (extra long for the purpose, I used to use a bit of stout line with a bowline in each end as an extension) to the bow eye, then just walk the mast forward and haul in the slack on the halyard as I go. Once I get the mast upright I haul the jib halyard good and tight into the cam cleat and then I can leisurely walk forward and secure the stays. If I get a snag on the way up I just cleat off and deal with it.

I know that I have seen posts on other forums by mac 25/26 owners talking about performing a similar procedure.
07-15-2010 05:28 PM
JohnRPollard Here, take a look at this article from Good Old Boat.
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