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Cedar jet boat build

Old 10-13-2017, 05:32 AM
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Default Cedar jet boat build

I am a cabinet guy not a real boat builder, nor do I know anyone that builds boats. I have no plans and build off feel and shape. This prototype is being built out cedar with knots that is 5/16" thick, 3" wide, 8' long and all bead and cove that I made. On the bottom, 7'6" from front to back is 64" wide, in the back is 34" wide. So it has a nice taper, but supposed to be a boat not art lol. Plan is Chevy 350 with a jet pump. All $ is in shop and tools so I could not afford clear cedar or cypress, especially here in Clearwater ,Florida. But god gives what i need. My ?'s are. Can epoxy and must stuff make hull strong and durable? Do I need more than 1 layer? Can I leave clear to see wood grain like cedar canoes? Are am I barking up the wrong tree and should just get out my saw and cut up to get more shop space? Any advice is greatly appreciated, thanks the cabinet guy
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Old 10-13-2017, 05:34 AM
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Default Cedar jet boat build

The boat is 17 1/2 foot long. Looks flat but the Only flat part on the bottom of boat is at the back 20" of hull where 20" cut out for jet pump. I am trying to build so it gets out of the water and planes fast. River/ lake boat maybe, but a low floating hull with jet hopefully won't hurt manatee. I measured my sbc 350 and built with enough room to fit nice with room to spare.
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Old 10-13-2017, 06:58 AM
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Looks pretty cool but i don't know about a sbc in it though.How about a jet ski power plant and pump ?
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Old 10-13-2017, 07:18 AM
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Originally Posted by mitchell master View Post
Looks pretty cool but i don't know about a sbc in it though.How about a jet ski power plant and pump ?
Would a jet ski power plant be enough power for boat? And what size would you suggest?
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Old 10-13-2017, 12:00 PM
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Wow! Don't know where to start. Is there any interior structure? So you are building a hull with no plans and no experience. Using an admittedly inferior plank only 5/16 thick. Then you are going to drop 200+ HP in it and hope for the best?

Who will install the electrical and fuel systems? If they aren't right you could easily blow yourself up.

You need to rethink the project....
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Old 10-14-2017, 02:43 AM
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I'll admit. When I read your title, I opened the thread and looked at the pictures...then read a comment or two THEN went back and read your paragraph on your build "plans".

My initial reaction was "huh, that's an odd shaped hull for a performance build". In other words, the flat bottom with no V is no condescend to speed or performance. With some structural components added, and some architectural improvements, this could be a sweet skiff build with an outboard motor ( tiller or remote steer).

You will want to research "fiberglass and epoxy and wooden boat". You will find a wealth of information both on this site and the remainder of the internet.
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Old 10-14-2017, 05:30 AM
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Interesting project. Hard to tell from the photo, but proportions don't feel quite right. Don't think you have the volume for a sbc. Tiller or small jet ski pump. With the hull deign would be concerned over 25-30mph. Structurally you could use the wood as a core but would need to epoxy/glass for strength. Looks of material out there. Nice craftsmanship, not sure about the hull design
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Old 10-14-2017, 06:20 AM
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.
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Old 10-14-2017, 09:00 AM
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I would make it a big remote control boat.
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Old 10-19-2017, 02:27 PM
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I built a 15' Crackerbox with a 350. It's possible, but I followed a set of plans. There were frames and stringers to carry the load.

Shoe some interior pics. Lets see the internal framework.
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Old 10-20-2017, 03:49 AM
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Would like to see some inside pics as well....if you decide on a clear finish...do your research...you need to add an additive to protect the epoxy from UV....GL
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Old 10-20-2017, 12:58 PM
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Great craftsmanship!
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Old 10-20-2017, 03:53 PM
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I don't think your hull form is unworkable. Certainly it needs to be properly framed out inside. I also agree a SBC is way to much power for the hull form. Nothing to do with the construction, you don't want that much power in that hull shape, for a number of reasons. I also would go with a decent size jet ski system.

I'm very familiar with the Jersey speed skiffs in that video (have owned a number of them, still have one and know a number of the guys in the video). This hull would not perform anything like a speed skiff.
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Old 10-20-2017, 04:22 PM
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I was building without plans, $, and knowledge, Just a dream. Lol. I had a broken left arm when build was started, cuz Could not sit home. But I feel like an old boat builder so had to try. I was going to pull my corvette motor out of my 1968 firebird to use for power plant. Cedar planks were made from Lowe’s cedar wall planks that I bead and coved all planks for a nice fit. Plan was to epoxy the outside and inside of Hull for strength and durability. But unfortunately realizing that I do not have $ for any part of project, even what has been done ( I have about $200. Into the hull as it sits). I opened a cabinet shop for kitchen remodels, and trying to do any work in shop with boat in shop leaves me no room to work. No $ for build leaves me to have to cut this project up into a later date, when more funds are available. Then I can rebuild with money so I can start and finish. I think I learned a lot with what has been accomplished. Thanks for all input from everyone, even to turn it into a remote control boat. Sounds way more appealing than cutting it up and it’s my saw . I do have a lil video on you tube under cedar jet boat build if anyone would like to see hull. Thanks and have a great times
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Old 10-20-2017, 04:59 PM
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Sorry to hear about your situation but I understand. For a seat of your pants first build I really think you came up with a good looking hull (maybe the best I've seen for a first time seat of the pants builds). It would need some rethinking about its performance. I think a moderate outboard would move it quite nicely.
Good luck and look forward to seeing your next build. Don't give up.
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Old 10-21-2017, 04:13 AM
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OP, look at the total boat skiff build on YouTube. Maybe you can save this, build some structure inside, hang a small outboard and get it out of the shop and enjoy it. Maybe another $2k in it?
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Old 10-21-2017, 06:05 AM
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Originally Posted by PiperMachine View Post
OP, look at the total boat skiff build on YouTube. Maybe you can save this, build some structure inside, hang a small outboard and get it out of the shop and enjoy it. Maybe another $2k in it?
Yeah, beef up the transom and skin the boat with glass. It should be a nice light skiff.
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Old 10-21-2017, 01:40 PM
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Originally Posted by Cabinetguy74 View Post
I was going to pull my corvette motor out of my 1968 firebird to use for power plant.
Bad idea.... that engine is not ignition protected. Lots of differences between marine engines and car engines. As I said, if you don't what you are doing when you install fuel and electrical systems you could easily kill yourself.
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Old 10-24-2017, 09:03 AM
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Default Update on Boat build

Got back into town and pulled boat out to cut up. And was surprised that boat looked a lot different than when it's in shop. I will not use car engine , as Steve said. But I do not know if I will cut up.
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Old 10-24-2017, 09:13 AM
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Try not to cut it up. Use your imagination. Maybe sell for a display, make a bar out it or maybe use it for a boat. Looks to good to cut up.
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