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My mast raising solutions

Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
I’ve read every thread about mast raising and watched every video I could find and picked through the stuff I liked and am adding my own twist. This is for my Hunter 18.5 but I’m sure most of it will be adaptable to almost any trailer sailor.

Being this is just in the works bear with me while I get parts finished off. I’m wide open to suggestions and criticism. Being able to step the mast solo is the end game with drilling as few holes in the boat as I can.

My first area of concern is attaching the baby stays to the mast, this device I invented should take care of that..... it basically slides up the mast track and secured in place with 2 - 1/4””x 20 bolts. At this point I have smaller machine screws holding it but understand they will end up with 1/4” bolts that index on the mast so it stays at the same height every time. Here’s all the pieces.

699EE6DD-51DC-4BC1-ACE4-EF4430CC6853.jpeg
 
Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
7E03DC2A-7093-47AE-9BF0-3D41BBDA6672.jpeg
On the mast without the wires, it looks to have promise. Meanwhile I have my version of a mast stick almost finished and will take some pics when it comes back from the welders
 
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Oct 31, 2012
304
Hunter 2008 H25 Sailavie Lake Wabamun
Would help if you provide a sketch of your proposed system.
 
Oct 19, 2017
5,069
O'Day 19 Littleton, NH
So far, it all looks very intriguing.

It's like you're trying this out for the first time, live, right here on SBO. No script, no rehearsals, anything could happen.
The suspense is killing us. :eek:

-Will (Dragonfly)
 
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Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
So far, it all looks very intriguing.

It's like you're trying this out for the first time, live, right here on SBO. No script, no rehearsals, anything could happen.
The suspense is killing us. :eek:

-Will (Dragonfly)
Also add I'm on a tight budget with a looming deadline and we've got a recipe for a reality tv show
 
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Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
At the mast, I reshaped a chunk of 1/8” aluminum pipe to form the masts shape and hung a pair of hose clamps on it to hold it tight to the mast.....(I will add in a 1” webbing on a ratchet for the first few times)

Next was a piece machined to adapt to a 80” X 1/8” aluminum pipe welded on, I wanted it to break into 2 pieces so the mast piece can stay on while trailering so it’s ready for the next raising. It’s just down to the baby stays and I hope to get their deck mounts done tomorrow.

82E96AAB-5411-4ED9-98D3-EC36EABBDF36.jpeg
8971DBA2-CDE0-4B0B-909C-89AC0574FE29.jpeg



And on the mast.
 
Oct 31, 2012
304
Hunter 2008 H25 Sailavie Lake Wabamun
She is a thing of beauty!
Well done. I’m envisioning the pole to work as my Hunter 25 as shown below?
A70EE109-27DA-406A-8AEE-46B487F8C881.jpeg
 
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Mar 2, 2019
36
Oday 25 Enigma Milwaukee
I built something very similar 12 years ago . We can used ours to raise almost any mast . Our line runs the same path as the photo with one small exception. It ends at the halyard winch on the mast . We can cleat it off and stop anytime going up or down . We have done this with the boat in the water as well.
 
Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
I got the mast raised using the new setup minus the baby stays.... there next. I put the device to hold the baby stays to the mast at 6’6” (that’s the top of my reach) now I’m wondering if that will be high enough?
9F92476E-329F-43D8-AB63-3CD3540CA929.jpeg
4F2235FE-441F-4988-989D-F1C5DF90088B.jpeg
805D33CD-0129-4180-ADD1-EDB92976B85C.jpeg
 
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Jun 25, 2004
555
Corsair F24 Mk1 003 San Francisco Bay, CA
I got the mast raised using the new setup minus the baby stays.... there next. I put the device to hold the baby stays to the mast at 6’6” (that’s the top of my reach) now I’m wondering if that will be high enough?View attachment 169350View attachment 169351View attachment 169352
That’s plenty high enough. I have built three systems in the past 15 years or so, and I put the attachment point as high as I can reach on the mast. I’m only 5’3” tall, so that’s not very high up, LOL


I suggest you also put stays on the end of the gin pole, to control rolling on the axis of the mast when the mast sways laterally off centerline. When that happens, there is a sideways force that try’s to buckle the gin pole and it might break.

I
 
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Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
I suggest you also put stays on the end of the gin pole, to control rolling on the axis of the mast if the mast pivots laterally off centerline. When that happens, there is a sideways force that try’s to buckle the gin pole and it might break.

I
Help me sort out some confusion... are you saying add stays from the gin back to the lower baby stay mounts or somewhere near them?
 
Jun 25, 2004
555
Corsair F24 Mk1 003 San Francisco Bay, CA
Help me sort out some confusion... are you saying add stays from the gin back to the lower baby stay mounts or somewhere near them?
Add wires from the Outboard end of the gin pole to the same anchor point as the lower baby stays.

Take a look at these three videos I made for my last mast raising system. The mast is about 34’ tall, and a very heavy section.

the third video explains out some of the important geometry The anchor point for the side stays should be co-linear (all on the same line) as the mast base hinge or pivot bolt.

Part 1 Mast raising:
Part 2: Mast lowering
Part 3: Close up of details:
 
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Jun 25, 2004
555
Corsair F24 Mk1 003 San Francisco Bay, CA
The socket clamped on the mast for the gin pole might be a problem due to snagging jib sheets..... You might want to make it removable. A through bolt from side to side might work. Ccut a vertical slot in the cuff, open on the bottom edges and going halfway on port and starboard. You can slide the cuff down on the bolt and then tighten it to keep the socket in position.

Also, have you considered how you could simplify how you attach the baby stays to the mast?. You could attach a strong eyestrap to the front of the mast. Then use carabiners to clip the wires to the mast . Much faster.

Have you considered moving the gin pole up to the same point as the baby shrouds.... you could weld up a fitting that mounts with one pin or bolt, and to Which the gin pole and the side baby stays attach....

Judy B
 
Jul 23, 2019
29
Hunter 18.5 Nameless Revelstoke
Judy thanks for the detailed posts

1) The mast bracket on my gin pole is easily removable with 2 hose clamps, my intent was to remove before sailing. I will probably change those hose clamps out for 1 ratchet strap to make it easier to attach/ detach.

2) After all that work making my little slider doohickey yours sounds like a way easier solution

3) I took advice from someone who told me to attach my gin pole as low as possible but I never understood his theory, it would be just as easy to move it up to the upper baby stay mount which would make attaching the forestay much easier.

I got to say I’m more than a tad jealous of your Farrier trimaran, I was fortunate enough to get an evening sailing one and have wanted one since, my banker strongly advised me to forget that night
 
Sep 24, 2018
510
O'Day 25 Waukegan
When the gin pole is farther up the forces exerted are very awkward. The mast will bend a bit before it starts raising. It's kind of counter intuitive. Regardless it does work and I have done it. I learned first hand why stays should be attached to the gin pole.

When prepping my boat for winter I took the mast down. The PO was nice enough to give me a hand. Since we used the boom as the gin pole we stepped it forward. I stood on the fore deck while he worked the lines to lower it (two main sheets in series). All went well until the last few feet. Knowing the extreme forces on the mast step screws I thought it'd be best to support it. As soon as I started holding the mast the boom went off to the side, lines flew everywhere and I nearly fell onto the pavement below. Thankfully there were no injuries or damage.
 
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Jun 25, 2004
555
Corsair F24 Mk1 003 San Francisco Bay, CA
@Project_Mayhem

I’m glad you weren’t injured!

Your story illustrates why Rule #1 for mast raising is :

NEVER stand underneath a mast as its being raised or lowered., you could be seriously injured or killed if something goes wrong. If your system required you to stand under the mast, it’s time for a new system.

I chastise Anton when he occasionally does it without thinking.

Judy B
 
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Sep 25, 2018
127
Catalina Capri 22 Capri EXPO 14.2 1282 Serenity Too Stony Point
I made a set of baby stays using cable. At the base I have two attachment points with a ring that allows the upper line to slide to line up with the mast base. I attach the upper baby stays to a halyard to tension. At the halyard I tie the stays to the mast. This allows no wiggle room for the mast as the stays are already tensioned. The gin pole is a 2X4 carved out to fit around the mast secured by a strap. When I first set this up, I did not have the baby stays secured to the mast tensioned and the mast began a wild sway that almost ripped the foot off the boat. Got it on the crutch, analyzed why it was swaying and came up with the tensioning to avoid lateral mast movement. Got it up OK and will soon see how well it works in the other direction. I use the main sheet to to pull the gin pole with the topping lift on the other end.
 

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