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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Solo Mast Stepping System
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Thread: Solo Mast Stepping System Reply to Thread
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Topic Review (Newest First)
11-12-2013 10:40 PM
QuickMick
Re: Solo Mast Stepping System

I made a simple JinPole for my 23... can do it easy peasy. 40 bucks in hardward plus the cost of the winch.
http://www.sailnet.com/forums/genera...-jin-pole.html
11-12-2013 09:28 PM
Delezynski
Re: Solo Mast Stepping System

Quote:
Originally Posted by downeast450 View Post
Greg,

Thanks for all your help. Pictures of your step and the base of your mast would be great! A measurement of the length of your slot and the height of the pin's hole above the deck would be helpful. I think I have figured out dimensions that will work but confirmation is always good.

Thanks again,

George
George,

Here are a couple of photos of the mast step and timber. Sorry I just got to the boat today. I am working on varnish in the garage just now. The base of the mast is harder to get to. But it's just a bolt hole with a pipe welded inside as a compression tube.

My mast is 35 Ft. and the distance from the base to the bow pulpit brace is ABOUT 13.5 foot +/-.

Hope it helps.

Greg
11-09-2013 12:54 PM
PBzeer
Re: Solo Mast Stepping System

My last boat was a Hunter 26 and used the same gin pole setup as the 260. I raised and lowered the mast routinely by myself. One of the good things about the system is the only "extra" parts you need are the gin pole and side stays, which are easy to keep on the boat.
11-09-2013 10:52 AM
Delezynski
Re: Solo Mast Stepping System

Quote:
Originally Posted by downeast450 View Post
Greg,

It is great to have a source of this information as I am making this modification.

.... SNIP ....
Do you know the distance from the step to the bow support on your boat?
.... SNIP ....
Pictures of your step and the base of your mast would be great!
George,

No problem!

My mast does not have any welded support on it's sides. It does have a compression tube welded on the inside where the bolt goes through it.

On my next trip to the boat, may not be till Monday as I am working on the tow truck over the weekend, I will take the measurement and snap a couple of close up photos.

Greg
11-09-2013 07:50 AM
downeast450
Re: Solo Mast Stepping System

Greg,

It is great to have a source of this information as I am making this modification.

Quote:
Originally Posted by Delezynski View Post
Down,


Our mast does not have a foot welded to it. The mast step on deck has an elongated hole on each side in it for the bolt. As the mast goes forward, the loosened bolt slides up a bit in the mount. The forward bottom of the mast also has a rounded area to it.
My mast step has (will have) a slot (elongated hole) for the pin to slide up in while the base "rotates" through the arc created by the shape of the base. I will also radius the leading edge of the base of the mast. From looking at the base of Ed's mast in his video it looks like "cheeks" have been added to the outside of the mast to strengthen it where the hole for the pin is drilled. I understand that the only strain on the pin is during raising and lowering. Will it be overkill to add reinforcement at the sides of the base of the mast? I do plan to weld a piece of sch 40 aluminum with an id of the dia of the pin into the mast as reinforcement.

Quote:
Originally Posted by Delezynski View Post
One thing that we have to watch out for is that once the mast is lowered, (or as you prep for raising) is that as it's base is ready for the bolt to go in, the top of the mast is far forward and tends to drop, so I have to hold the base down. Sit on it and then put the bolt through the sides of the mount and the mast base.
Do you know the distance from the step to the bow support on your boat?

Quote:
Originally Posted by Delezynski View Post
I made a board that fits across our bow pulpit with a large trailer roller in it. Once the mast is down sitting on it' it's easy to just allow the base to rise up a bit (under control) and roll it back. I then support it on the bow pulpit (without the roller) forward, on the boom gallows aft and I use one of the wood 4x4s trailer chucks, that I special cut to to mount where the mast step is and it supports the middle of the mast for transport.

As chicken as I am, I had the mast raised for me the first time to make sure everything fits and is secure. Lowering is then easy and setting up the 4 part bridal is easy, and if not taken apart, the correct size for the raising.

If you need any close up photos, just ask and the next time I go to the boat I will snap a couple.

Greg
Thanks for all your help. Pictures of your step and the base of your mast would be great! A measurement of the length of your slot and the height of the pin's hole above the deck would be helpful. I think I have figured out dimensions that will work but confirmation is always good.

Thanks again,

George
11-08-2013 02:18 PM
wdfunk
Re: Solo Mast Stepping System

Hobie 33's all came with a bridle system that has dual sidestays and uses the spin pole as a gin pole..the H33 website has a PDF of the manual with the whole system described. I can raise n lower without assistance..
11-08-2013 01:26 PM
Rhys05
Re: Solo Mast Stepping System

Quote:
Originally Posted by SHNOOL View Post

This is a good investment... but building your own (like TakeFive)... works too! Catalina Direct: Mastup Mast Stepper CP-14.2, C-15, C-16.5, CP-18, C-22, CP-22, C-25, C-250
Yep, I've actually already got something almost exactly like that that the PO made, works okay, except for trying to raise it up while the mast is sitting on it. I end up lifting the mast while my wife lifts the "mast upper" up and tries to get a pin in a hole. Need to figure out a better way to get it working than that.. Yes, definitely know about the initial few degrees of tilt is the hardest, definitely the part that is currently making us feel that it is a three person, rather than one or two person job. (One to pull the mainsheet attached to the spin pole, and two to stand on the cabin top to "hoof" it up. It works..but is less than ideal for if/when the wife and I want to take the boat elsewhere to go cruising, hence my search for a better engineered solution to make it easier and safer to do ourselves without an extra person.
11-08-2013 12:51 PM
SHNOOL
Re: Solo Mast Stepping System

Rhys05, yes the fixed ring is high enough I believe it's about 6 feet from the deck or about 4 from the base of the mast... Yes the S2 mast is about 30lbs heavier than the Capri 25... yet about the same height (which is really where all the "problem" is)... It may be 100lbs, but it takes roughly 300-400lbs of force to get it started in lifting, an extra set of hands to get it started in the upward direction is helpful, but ideally the A-frame has to handle the weight, so you're better off not letting slack occur in the raising process, or it could BOUNCE and induce excess stress 2-3 times the load... the amount of initial "grunt" goes down substantially depending on how high up the aft end of the mast starts. Therefore the "initial" setting for the mast should be well above horizontal... Ideally it'd be the maximum comfortable height for one person standing on the cockpit seats to lift the mast and set it down into the support... therefore mine is about 6-7 feet off the cockpit seat... Lifting just the 1 end too, is not a lot of effort... as you put the pin into the bottom of the mast first THEN lift the mast up to the highest setting on the aft mast support (which ideally is at or behind the center of grav, which if you note in my picture, the support angles OUT off the stern to well behind the boat, I've tied it off to the stern cleats, and locked it into my stern pulpit, it never moves).

I should note that I've raised and lowered the mast 2 times myself now... if you look at the pictures closely, you'll see some are from spring some are from fall, both from this year.

This is a good investment... but building your own (like TakeFive)... works too! Catalina Direct: Mastup Mast Stepper CP-14.2, C-15, C-16.5, CP-18, C-22, CP-22, C-25, C-250
11-07-2013 01:51 PM
TakeFive
Re: Solo Mast Stepping System

Quote:
Originally Posted by Rhys05 View Post
...Right now I have been using the spinnaker topping lift halyard as the lift point, it seems to work okay, but it is a bit high so the tension in the line has to be pretty high before the lifting component is enough to move the mast, I'd like to try to minimize the line tensions as much as possible. ...off to do some trig and engineering!
You might not see it in the pics or videos, but I have two connection points to hold the mast up. I have a spare jib halyard that connects the top of the mast to the end of the gin pole, and a second line that connects to a homemade harness that goes halfway up the mast (just under the spreaders) and down to the end of the gin pole. On my boat, some people use the former and some people use the latter. (Catalina changed their instructions on how to do this at some point.) I chose to use both for redundancy, and also to minimize flexing and vibration of the mast.
11-07-2013 10:24 AM
Rhys05
Re: Solo Mast Stepping System

SHNOOL:

My mast is the class mast, so the spinnaker ring is in a fixed position, I'll have to look and see how high is is above the step, but it appears to be in about the same (relative) position as on your boat. Am I correct in assuming that the S2 mast is ~30 lbs heavier than yours? About the same as that Oday, at ~100 lbs? We'll see what I end up with, I was originally going to go with something like TakeFive's system, but then I was intrigued by the A-frame designs. We shall see. Right now I have been using the spinnaker topping lift halyard as the lift point, it seems to work okay, but it is a bit high so the tension in the line has to be pretty high before the lifting component is enough to move the mast, I'd like to try to minimize the line tensions as much as possible. ...off to do some trig and engineering!
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