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Discussion Starter #1
I am humbly seeking the collective wisdom of all those gathered here. ;-)

I have an old Sunfish with a hull that is beyond any repairs that I want to attempt.
However the sail, mast, spars, and tiller are all in serviceable condition (for recreational purposes).

I recently acquired a free Escape Mambo hull. It had no sail, mast, boom, or rudder. It did have the attached swing down daggerboard. They are no longer making the Escape line of boats and there are no mast or boom assemblies to be found in the US. You can still get some other parts.

Being made by the same parent company, the Sunfish rudder fits the Mambo perfectly.

I am trying to use the Sunfish sail on the Mambo.

I have modified the Mambo slightly to accept the mast and also slightly modified the Sunfish mast to fit properly to the Mambo hull. All of that is working well. I believe the Mambo originally had a 64 sq.ft. sail and, if I'm not mistaken, the Sunfish is 75 sq.ft.

My problem is how far back the Sunfish sail sits on the boat (see pictures). The boom is hanging out over the stern about 4 feet. I have only taken this boat out a couple of times and have only experienced light to moderate winds. In moderate winds it performs very well and is a lot of fun; I expect that it would also do well in stronger winds. However, I am having trouble in lighter winds. It feels like I have no control. It feels like because there is so much sail to the rear of the boat that it is pushing the rear of the boat around in light winds. The boat also slides sideways in light winds.

The other problem is that when the boat is in the water and unrigged I have a lot of sail and spars sitting in the water which become a bit heavy to hoist out to get underway.

I'm not sure if I'm making sense with all of this.

I would love to be able to find an Escape sail, mast, etc. to do this the right way. But I don't think that is going to happen. Financially, I am not able to do much of anything.

In the pictures you will notice that I have the sail adjusted quite high. I really don't like having to duck very much under the boom when sailing.

Can anyone suggest anything to help?
 

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Two thoughts, in order of difficulty:
1> Move the gooseneck aft on the boom, thus moving a larger portion of the sail area ahead of the mast. this will also bring the boom down. you might have to duck.
2> shorten the boom and recut the sail.
 

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Discussion Starter #3
Two thoughts, in order of difficulty:
1> Move the gooseneck aft on the boom, thus moving a larger portion of the sail area ahead of the mast. this will also bring the boom down. you might have to duck.
2> shorten the boom and recut the sail.
Any suggestions on what is involved in re-cutting a sail?
 

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On a rig like that I think you could get anyone with a sewing machine to trim the sail down for you.. probably at the leading edge/luff as there is less detail there to deal with (battens etc). Reproduce the finishing on that leading edge once it's trimmed, any reasonable seamstress could do that, and the material is likely light enough for most machines - you may need to hand finish the corners if there are lots of layers.

For just banging around the local bay I think you'll do fine. Trim the boom to match. It's pretty clearly an overlength rig for that hull.
 

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By sliding the boom forward at the mast, you will end up with more of a lateen rig and give you better balance.
Before cutting anything, I'd mess about with this for a few sails and see what happens.
 

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Discussion Starter #8
By sliding the boom forward at the mast, you will end up with more of a lateen rig and give you better balance.
Before cutting anything, I'd mess about with this for a few sails and see what happens.
I just went outside and moved the boom as far forward as I could on the gooseneck. The problem I ran into is that no matter where I tie the halyard on the upper spar it causes the lower boom to hang to low and be angled down at the back.
 

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Another option after moving the boom forward is to add a new gromet at the right height on the leech of the sail to bring the boom level again. You can temporarily just tie it off to the boom, to check it out in light winds (the easy ones, like even the best tarp gromets, are not strong enough without reinforcement for even medium winds). If it seems to work better, you can permanently recut the sail and put in a proper reinforced grommet at that location.
 

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Discussion Starter #10
Thanks for all the replies everyone.
I'm going to do some experimenting as soon as I can get some time away from work! The problem is I'm the boss! :-/
 

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+1 on moving the boom forward before cutting. It does look like a fun project:)
 
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