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Thread: Detroit GIS build log
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24th March 2013, 03:24 PM #31
I did post this video of the fully reefed goat with two aboard in Florida. It shows how you can go out in a lot of wind and have a relatively docile time because of a deep reef.
Sailmakers don't understand that a small boat might be sailed for lots of miles in such conditions ... or in more average conditions with less experienced sailors.
John Goodman and I would not have had such a comfortable fast time in the Texas 200 without that deep reef. There comes the point when you are going so fast even with such a heavily laden boat that the bow looks like it is going to dig into the wave in front. If we hadn't been able to reef fully we would have ended up drying all our gear on an oyster shell islet somewhere and waiting for the wind to reduce.
MIK
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24th March 2013 03:24 PM # ADSGoogle Adsense Advertisement
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4th June 2013, 11:57 AM #32Intermediate Member
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- Jan 2013
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- detroit, Michigan, USA
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daggerboard question
I posted this on the GIS FB page too, but what are the pros and cons of the optional trailing edge taper on the bottom of the daggerboard? I finished shaping the rudder, and just have to frame up two more bulkheads before i'm ready to go 3-D!
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4th June 2013, 03:12 PM #33
The taper makes it easier to get the board into the case.
It also increases the efficiency of the foil slightly.
And best of all because of the construction... and shaping template method... it takes no extra time to make a really nice accurate foil.
The transition between the parallel sided section and the tapered section and the bottom is a smooth curve.
Best wishes
Michael
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4th June 2013, 07:32 PM #34Senior Member
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phoran - glad to see you are coming along. I need to do the centreboard case before I go 3 D. Probably within two weeks. I have so much stuff done that it will probably go really fast from here on except the sanding and varnishing.
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4th June 2013, 11:22 PM #35Intermediate Member
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oh yeah, the centerboard case. I was saving that until the board was finished. I did put my model airplane building experience to good use, and propped the bulkheads up in their places on the hull bottom. rather than make airplane noises, I imagined a nice beam reach!
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5th June 2013, 06:20 AM #36
Detroit GIS build log
Dave
StorerBoat Builder, Sailor, Enthusiast
Dave's GIS Chronicles | Dave's Lugs'l Chronicles | Dave's StorerBoat Forum Thread
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5th June 2013, 01:30 PM #37
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6th June 2013, 09:00 AM #38SENIOR MEMBER
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I confess. I sent it under your name.
The "Cosmos Mariner,"My Goat Island Skiff
http://s176.photobucket.com/albums/w168/MiddleAgesMan/
Starting the Simmons Sea Skiff 18
http://www.flickr.com/photos/37973275@N03/
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6th June 2013, 03:28 PM #39
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10th June 2013, 03:54 PM #40
And don't forget to make the case 3mm wider than the finished width of the daggerboard. Another tip is to use 50mm wide seat belt webbing on the faces at the top and bottom of the case. It has just the right amount of grip V slide for the board. It is 1mm thick. The extra 1 mm allows .5mm swelling of the webbing on either side when wet, something that isn't often taken into account. Happy days...
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10th June 2013, 11:36 PM #41Intermediate Member
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seat belt webbing
glued flat to the interior faces of the centercase? or glued to the top and bottom of the centercase slot, like a gasket? also, please note the correct spelling of "center"!
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11th June 2013, 09:08 AM #42Senior Member
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Correct American spelling. Not so in other English speaking places. And yes, explain the webbing a little better. Sounds like something I might get into this week.
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11th June 2013, 09:19 AM #43
Yes, glued (with rubber contact glue) to the top and bottom inside faces of the centre case after you have finished painting the boat. It also acts to prevent the board chafing against the inside of the case and damaging both foil and case. Do for the rudder case as well.
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11th June 2013, 03:46 PM #44
Detroit GIS build log
As they say, a picture is worth 1000 words so will send one through shortly.
Sent from my iPhone using Tapatalk
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11th June 2013, 07:09 PM #45
OK, here is the pic showing the 50mm wide webbing glued inside the case. 25mm wide would also work, but 50mm is best.
IMG_1031 (1024x768).jpg
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