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PostPosted: Sun Sep 03, 2006 7:45 pm 
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Joined: Mon Jun 09, 2003 7:49 pm
Posts: 49
Location: Ogden Dunes, IN
How do the H-18 pontoons vent temperature/pressure changes, since they do not have the tube through the foam in the H-16 corner castings?


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 Post subject: Vent
PostPosted: Mon Sep 04, 2006 8:45 am 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 8904
Location: Oceanside, California
Vent? As far as I recall the inspection ports were expected to vent the Hobie 18. The original boats anyway. The rope used to pull the inspection lid was not sealed.

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Director of Parts and Accessory Sales
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PostPosted: Mon Sep 04, 2006 3:57 pm 
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Joined: Sat Jun 21, 2003 7:14 pm
Posts: 455
Location: West MI
I had my 89 Nationals boat apart last spring. Underneath the front crossbar is a 1/8" dia hole drilled into the hull. I'm assuming that is a vent. If not I will fill it this winter, after I fix 6 other boats. My mini fleet for the pond out front.

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DVL 1989 H-18 Worlds Boat, Magnum Wings & Spinnaker

dale.vanlopik"at"att"dot"net


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 Post subject: Pressure venting
PostPosted: Mon Sep 04, 2006 6:42 pm 
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Joined: Wed Feb 02, 2005 4:59 am
Posts: 75
Location: Ogden Dunes, IN
OK. My '97 H-18SX doesn't have the rope pulls on the forward inspection ports; it has the threaded caps. We had the forward crossbar off a couple months ago, and I think I remember seeing what you are writing about.


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 Post subject: Vent Holes
PostPosted: Wed Sep 06, 2006 8:11 am 
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Joined: Thu Jun 23, 2005 12:55 am
Posts: 356
Location: Rapid City, South Dakota
My 1992 18 had vent holes under the front crossbar. I leave my hull plugs out when traveling so I filled the vent holes with silicon, and it greatly reduced the amount of water intake during heavy wind days.


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PostPosted: Thu Sep 07, 2006 1:11 pm 
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Joined: Fri Aug 18, 2006 8:45 am
Posts: 10
Location: Syracuse, NY
I have an 82 H18 that doesn't seem to take on water normaly untill we took it in higher winds a few weeks ago and capsized for the first time since I've had this boat.
It immediately went turtle in the gusty winds and it took us 15 miniuts or so to right it in those conditions afterwords we capsized one more time without going turtle so it spent a little more time on one side.
When I got it home later I found it had taken about 4 gallons of water in one hull and about one gallon inthe other. I figured that the water got in thru the rope holes in the port plugs so I plan to get the screw in type to prevent this in the future - But now I wonder if this will be a problem with hull venting.
I leave the drain plugs out when not in the water but it would seem that you would need the venting in the water due to the difference of the air and water temps.
Any thoughts????

Thanks, Mark


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PostPosted: Thu Sep 07, 2006 3:53 pm 
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Joined: Sat Jun 21, 2003 7:14 pm
Posts: 455
Location: West MI
Go to the screw in ports if you don't have them. I also leave my drain plugs open when ever possible and when the boat is in the yard I open up the ports (for days on end). If you keep air flowing in the hulls and the water out I feel there is less chance for delamination.

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DVL 1989 H-18 Worlds Boat, Magnum Wings & Spinnaker

dale.vanlopik"at"att"dot"net


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