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Scarab Ninja 34 Go Fast Boat -> CC

Old 03-14-2019, 07:38 PM
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Default Scarab Ninja 34 Go Fast Boat -> CC

Me and my dad went up to deleware last year and bought a 34 scarab which originally had 502s with some ungodly amount of forced induction. Ripped it apart, and am starting the rebuild process. Plan is something simple, with fishing room and enough seating for trips to the sandbar. We live in Greenville NC and frequent the Outer Banks, And Morehead during the bigrock. So far the stringers have been rebuilt, my dad wanted to try using that “pourable substrate” called AR-Jay, though I didn’t approve we did it and I have to say I’m some what impressed after taking it through some simple test in the shop. What’s next is the transom we are going with 3 layers of 1/2in coosa. Should be enough to hang an Armstrong bracket off holding 2 250’s
Old 03-14-2019, 07:47 PM
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Will it plane with 250’s?
Old 03-14-2019, 07:47 PM
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ill try to get pictures up in the morning it won’t work from my phone for some reason
Old 03-14-2019, 07:50 PM
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Originally Posted by Egis View Post
Will it plane with 250’s?
buddy of mine redid one with twin 300 hpdi’s And it scoots, upwards of 60 mph. Light narrow boats, sharp deadrise = little drag. Expecting around 50-55 top end. Using a 2” nida core deck. Boat shouldn’t weigh more than 7500lbs. And to put in perspective the a 30ft Grady express comes with 250s and that’s considerably heavier boat
Old 03-14-2019, 09:06 PM
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Fun project, put up a few pictures. Think you need 10 posts
Old 03-15-2019, 04:11 AM
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I guess to help get me to ten posts I could start by introducing myself. I’m an engineering student at NC State, am an avid duck hunter and fisher. I grew up always working on projects, for instance I have a ls swapped Jeep CJ 7 in my garage calling my name after this boat.
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Old 03-15-2019, 04:15 AM
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Guy who was like a brother to me growing up went to school at VA Tech for engineering and now works as a design guy, and CNC specialist for Bayliss Boatworks. He always has cool new ideas how to do things, the “correct way”. His dad has taught me a lot about building, they restore boats non stop and I caught the bug from them. My neighbor used to work for A builder I forget who but someone near wancheese back in the 80’s, he also has lots of good input.
Old 03-15-2019, 04:17 AM
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You have a good solid hull. The big blocks were very heavy. With the weight reduction it should run well.
Old 03-15-2019, 05:50 AM
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interesting idea!
Old 03-15-2019, 04:44 PM
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Shot of the transom on my Scarab 34SS. Poured Arjay and it’s absolutely fantastic. Used to run trip 430HP outboards on it and the transom didn’t budge. Keep up the Arjay work....

Old 03-16-2019, 12:34 AM
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Originally Posted by Snailspace View Post
What’s next is the transom we are going with 3 layers of 1/2in coosa. Should be enough to hang an Armstrong bracket off holding 2 250’s
Why not one 1.5" piece of Coosa?
Old 03-16-2019, 05:48 AM
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Originally Posted by cjperry View Post
Why not one 1.5" piece of Coosa?
it’s a higher density version of blue water coosa which is rated at 26 lb, the stuff we used is 30lb and does not come in 1.5”. My friend who works at Bayliss ordered this for us so I couldn’t tell you the true brand we just call it coosa.
Old 03-16-2019, 06:04 AM
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Norseman that’s good to hear, I believe my dad used your build as am arguing point to use the stuff and I was very pleased with it.
Old 03-16-2019, 06:04 AM
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Now that I’m finally at 10 posts it’s picture time.
Old 03-16-2019, 06:23 AM
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The picture with all of the clamps on top is the second layer of the transom, made lots of weep holes and had "squeeze out" in every one as well as around the perimeter. PS I don't think I actually had to have 10 posts to post pictures I think that I was just doing it the wrong way, thanks to the sticky the pics are here.
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Old 03-16-2019, 04:23 PM
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If 1000 hp was pushing it to 76 mph
500 should do 54mph


why only 250? Cant you get 300 for similar price.
Old 03-16-2019, 04:52 PM
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If I remember right the 502’s dressed out were about 1400 pounds each. With the outboards should be dropping 1500-1600 pounds.
Old 03-16-2019, 06:06 PM
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Not opposed to 300s, 250s seem to be more abundant and yes more reasonable on price. Duke that’s about what I came up with as well, I want to keep this boat as light as possible I want to make sure she self bails fairly well, I know the 30 sports had problems with bailing im not sure if this transferred to the 34.
Old 03-17-2019, 10:11 PM
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I have a 34 SS and no problems with self bailing, the deck drains perfect. I have never had water come in from scupper drains, and the weight of modern 4 strokes does not affect this. I have 275 Verado's and My brother with the same boat has 300 Suzuki's. top speed for mine fully loaded for fishing is 50 MPH, my brothers is closer to 60 MPH, V-Rods 40 mph 1 MPG, Suzuki's 40 mph 1.5 mpg, this is real world numbers full on fuel 250 gal. 5 men, fully loaded for fishing. To get these boats to run you really need to put some horse power on the back. I will tell you this, the 30 ft sport and the 34 SS are two totally different boats and in no way can you compare the two. Good luck with the build.
Old 03-18-2019, 12:56 PM
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This will be really cool I think!

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