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Old Jul 08, 2015, 07:25 AM
wayne from Fla is offline
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Rigging a 3 masted schooner

Hello all, I am getting to the rigging portion of this project. I have a continuous loop for the three main sails but am having a problem trying to come up with a viable rigging plan for the jibs. The first jib is hung on a bobstay and sheets around the foremast. The next is attached to a forestay and sheets around the bob stay. The third is banked on out at the end of the bowsprit and sheets around the forestay. How is this done in miniature? And how can it be controlled? I have a sailwinch with a basket that could be used to sheet in a loop which might take care of two jibs but how do you handle a third jib? Even though this model is 55" on deck, the boat has very little freeboard and I'm running out of space wanting to keep everything above water level. I do have a lower bilge recessed into the lead keel that I poured and it has a self bailing bilge pump and I plan to use Corrosion X on everything if any unexpected water gets too high.
I'm hoping some one in the group has rigged a multi jibbed boat before and can though out some suggestions.
Thanks to the group, you've all been helpful through out my last three models!
Wayne
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Old Jul 08, 2015, 07:28 AM
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Ok. You're going to have to excuse my typos as I have big fingers and a little phone!
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Old Jul 08, 2015, 08:36 AM
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The bobstay is under the bowsprit, so you probably mean fore-stay.
3 jibs on a schooner are normally forestays'l, jib, and flying or outer-jib.

Anyway, a set-up to handle over-lapping sails is shown in my thread Here.

It rambles on a bit after that, but you should get the idea.
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Old Jul 08, 2015, 08:14 PM
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yeah, I'm planning to use Jerry's method on my 32" LWL Top'sl Sloop. It has 3 fore'sl and a flying jib, which is actually in the clear above everything else.

Jason
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Old Jul 09, 2015, 11:12 AM
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Jason, that servo system is Brilliant!
I'm not able to get a good enough copy to read the info with the last three pictures. Is there any way to get a bigger or better definition copy of them?
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Old Jul 09, 2015, 01:10 PM
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I just right click on them and save the image to my computer. If you first left click on them you also get the photo gallery pop-up.

Notice that I said.... "planning to use", I've drawn mine up in Solidworks, with some changes, but have not built it yet. Probably use my friend's laser cutter to do the arms. I'm designing some horns and will be using the master servo arm reversed to run against the horns to give a longer throw as the arm gets farther off center. Basically not just a doubler on the rigging but also a doubler on the physical arm too.

Jason
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Old Jul 09, 2015, 01:34 PM
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So how do you make it so the outer two arms swing freely?
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Old Jul 09, 2015, 01:36 PM
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I did move them to my computer but by the time I try to get them big enough to see, they become distorted. Tried to email them to myself still no good. Oh well.
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Old Jul 09, 2015, 02:01 PM
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Click on the image and it'll open in "gallery mode" you can then right click the image and "view image" or "save image." I'm sure you'll find them plenty large enough to read.
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Old Jul 09, 2015, 10:02 PM
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I only have an iphone and an iPad. No right click button. Thanks though for the lead on the three armed servo. I'll have to experiment with making free moving arms.
Wayne
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Old Jul 10, 2015, 11:42 AM
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Comment from an observer. The semaphore servo arm concept has lots of potential. It allows the slack side of twin sheets to be completely slack the entire time, not just 'sort of' slack like the action you get from a single arm.
But the sliding servo with multiple drums will still have a slack loop issue, as the servo will move based on the line with the most tension. The others will be slack. Now, if you can say this condition will NEVER happen, then maybe I'm worrying about something for nothing. Otherwise, a tension device for each unique drum/line would be required.

Dave
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Old Jul 10, 2015, 01:53 PM
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so, any thoughts on how to set up the free floating arms? The only thing I can come up with is machining a new, longer top servo screw to accommodate the floating arms with bushings and a nut for the very top. any one have an easier way to do this?
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Old Jul 10, 2015, 03:24 PM
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You saw how I did it?
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Old Jul 11, 2015, 06:37 AM
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I saw the drawing but can't see how to attach the free floating arms.
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Old Jul 11, 2015, 07:19 AM
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I looked through all of your pics that I can find and don't see any of how you attach the free floating arms. Jerry, please help!
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