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 Post subject: Re: Spray shields
PostPosted: Wed Mar 24, 2010 11:38 am 
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Joined: Wed Sep 02, 2009 3:54 pm
Posts: 125
Location: Canyon Lake, Tx
S.Yoars
My Fulmar 19 is more like a folding Tandem AI composite...check it out at http://www.multihulls.com/dealers/fulmar/fulmar.htm for more information...the company only built about 20 or so back in the early 90's...too bad because it's a great boat...more pictures at http://s730.photobucket.com/albums/ww30 ... lmer%2019/

Ron

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"Anything's gonna happen,
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 Post subject: Re: Spray shields
PostPosted: Wed Mar 24, 2010 11:41 am 
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Joined: Fri Jan 05, 2007 9:21 pm
Posts: 2498
Location: Central Florida
Dave, tightening the sprayskirt so that it only raises slightly on the windward side (from wind) and only lowers slightly on the leeward side (from water) while in use, works best. If it looks like a tennis ball would bounce a little off of it, it feels about right to me.

If you still choose to bury the nose in larger waves, it will slow the boat (to a stop if a big enough wave). The boat will pop right back up. This is instead of plowing through the wave leaving you up to your armpits in water. :shock: A trade off. It's designed to keep the spray (and buckets of water) off you, not to climb 3 foot waves. :)

If you sail across the waves at about a 45 degrees, it shouldn't grab the waves and can be much faster than a strait downwind run, even with the extra area covered. Of course, if you need to stay in a channel, then you just need to slow the boat down to match the waves to not submarine.

The sprayskirt seems to raise to bow slightly, which helps get over more of the smaller waves. And when pushing the boat for speed, (especially heading between close hauled and a beam reach) it will stop the ama from burying very far as it will plane off the sprayskirt instead of continuing to bury deeper (racing :D ). Like the center boat on the picture below (I did finally catch him!).

My best installation advice is to add a knot on the line, just inside of the sprayskirt at all points the line exits and add a small wire tie on the shade cloth around the line, just outside of the knot to keep the shade cloth stretched taught.

Post some photo's when you finish it.

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 Post subject: Re: Spray shields
PostPosted: Thu Mar 25, 2010 12:18 am 
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Joined: Sun Oct 11, 2009 5:57 am
Posts: 270
Location: Perth, Australia
i'm having trouble getting it that tight, i think maybe it is that the pvc tube is to large and flexible. I may also try and modify the design so that the spray skirts are half the length. So start at the hatch instead of the bow. My main annoyance with water coming over the top is when it hits the aka crossbar connection and bounces off that, which i think a half skirt would still stop.

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 Post subject: Re: Spray shields
PostPosted: Thu Mar 25, 2010 10:24 am 
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Joined: Fri Jan 05, 2007 9:21 pm
Posts: 2498
Location: Central Florida
I haven't used the tubing in over a year. It was there because I was worried about wear between the rope and the shade cloth, but there doesn't seem to be much movement, so not needed.

Do you have knots and wire ties stretching the cloth out?

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 Post subject: Re: Spray shields
PostPosted: Thu Mar 25, 2010 9:48 pm 
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Joined: Sun Oct 11, 2009 5:57 am
Posts: 270
Location: Perth, Australia
yep.. well cable ties anyway.

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