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Old 08 August 2010, 08:46   #1
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Country: USA
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Hurricane 640 Project

Rebuilding a Hurricane 640 adding a 30" Hull extension to hang twin 150's and various other tricks stay tuned to see what happens and what we learn.
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Old 08 August 2010, 08:48   #2
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Extension/Bracket comes out of the mold

Pulled the first extension/bracket out of the mold today.
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Old 08 August 2010, 14:33   #3
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Mod to engine compartment to acomadate tow reel

Another day.
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Old 08 August 2010, 18:14   #4
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That looks like a project rib!

Just out of interest, why have you gone for a fibreglass extension rather than modify the transom or use metal extension brackets?

I was thinking the loads on that extension would be enormous.
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Old 08 August 2010, 19:55   #5
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The pressure on the bracket is no more than that put on the boat in the first place which is made of glass. We are extending the boat as it was originally a IO and as such the center of gravity and the load need to be moved to maintain the ride without losing any interior space So extending the stern of the boat with an extension rather than a bracket will help level the boat and distribute the weight.
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Old 14 August 2010, 03:46   #6
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I'm liking what you're doing with the 640 refurb, especially the outboard brackets.

I've refurbed two 640's and started off with a single 225hp on the first, that boat was scary fast, like 51 knots, I can only imagine how fast your 300hp 640 is going to be!

I can post pics of my 640's if you wish...
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Old 14 August 2010, 09:03   #7
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I would love to see pics.
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Old 14 August 2010, 12:30   #8
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This is the second 640 that I refurb'd, it started out with a 2-stroke 175 and ended up with a 4-stroke 150. I needed maximum deck space on the boats, so I completely did away with the old inboard engine boxes.













This is the first one that I converted, it was a rocket with the 2-stroke 225, way too fast. It has a 4-stroke 130 now and still runs at a respectable 25 knots or so...







Armstrong brackets on both, but I like your fiberglass bracket idea also.
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Old 14 August 2010, 14:03   #9
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The extension is on and ready to get glassed

She is ready for final glass job, she will become one by 6:00 tonight!
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Old 16 August 2010, 20:13   #10
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These pics are fantastic. I am restoring a Avon 6m Searider. Does anyone have any experience with a adding a short bracket to one of these boats? I bought the boat as just a hull, and have cut the deck off, only to find out what a good idea that was. The stern stringers where completely rotted.

Anyway... I'm basically rebuilding the rib. I'm a little worried about how the boat will sit with a bracket. I'm installing an internal fuel tank, and putting the battery bank as far forward as possible. Do you have any advice?

Keep posting the pics, I'm getting ideas...

By the way, not sure you guys have seen this, but I'm getting some of my ideas from these guys. I'm a sucker for Carbon Fiber...

http://www.pureyachting.com/
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