The 14' Jet boat project (update 7/19/2010 Video on page 4)

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ihavenoideawhattoput
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The 14' Jet boat project (update 7/19/2010 Video on page 4)

Post by ihavenoideawhattoput »

Boat 197? 14' $350 w trailer and good title and reg. This is a big deal in South Carolina
Motor and Jet 1995 SeaDoo XP $130 Was told they could not get it to start, we rode it at the lake the next morning. :)

Here is a photo project update and a little information.

This is my first boat ever and I go and cut a hole in it. Everyone thinks I am crazy.

Redid the trailer
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Stripped most of the paint from the inside of the boat.
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Measured and cut the boat. We measured the lowest rib on the Sea Doo and based our first cut on this and it ended up being perfect.
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No turning back now, you can see the chalk line in the photo, this is what was used to keep the cuts somewhat strait.
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Can we keep it? NOPE
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First cut on the SeaDoo Made a world of difference getting all the guts out
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First test fit, there was an echo in the garage as everyone said "BADDASS" at the same time. Everyone thought I was crazy up untill this point right here.
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Then we removed the motor and more paint.
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Motor in for life, sealed in with 5/16" lag bolts and 3M 5200, a length of 1.5" x 1/8" aluminum flat bar was used on the inside and the outside for strength, the separation between the fiberglass and aluminum got epoxy that is being sanded smooth, more photo's of that part to come later
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a little decking work has begun.
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I hope to do a water test this coming weekend while the decking is out of it for sealing. To fasten the decking together I bought an 8' length of aluminum angle and have cut to size all of my brackets. Sure is cheaper than buying all that stainless hardware and it's pretty strong.

Any questions just ask, nice forum you all have here by the way. I will also get more photo's of the engine install soon. Hands where too nasty to take photo's 5200 is nasty stuff. Oh yea so is fiberglass, many nights I scratched myself to sleep, glad that part is over!
Last edited by ihavenoideawhattoput on 19 Jul 2010, 09:41, edited 1 time in total.

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perchin
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The 14' Jet boat project

Post by perchin »

Stop!!!!!!!! before you go any further......... take any Pressure Treated lumber out of there, it will just react with the aluminum and cause corrosion and pitting, and fast.

Other than that, It looks awsome..... and I can't wait to see more.. :popcorn:

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BaitCaster
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The 14' Jet boat project

Post by BaitCaster »

Wow, I like where this is going! Can't wait to see more.

There was another guy on this site that did a similar conversion. However, you appear to be taking a different, simpler, approach.
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Jim
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The 14' Jet boat project

Post by Jim »

Very cool man!
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Waterwings
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The 14' Jet boat project

Post by Waterwings »

Gonna be an interesting build to say the least. I always thought mods like this were more for flat-bottom boats?

Welcome Aboard! :)
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ihavenoideawhattoput
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The 14' Jet boat project

Post by ihavenoideawhattoput »

perchin wrote:Stop!!!!!!!! before you go any further......... take any Pressure Treated lumber out of there, it will just react with the aluminum and cause corrosion and pitting, and fast.

Other than that, It looks awsome..... and I can't wait to see more.. :popcorn:
Is it OK to seal it with watersealer before installing it? Someone else already told me about this issue and recomended either sealing the wood or protecting the aluminum.

So what is the best wood to use and keep it from rotting? Not using marine grade this is a cheap garage project.


More pictures of the motor mount coming when the batteries get finished charging on the camera. Really tired of cell phone pics, they show no detail.

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Jim
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The 14' Jet boat project

Post by Jim »

Use plain old regular lumber instead and seal that.
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ihavenoideawhattoput
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The 14' Jet boat project

Post by ihavenoideawhattoput »

Jim wrote:Use plain old regular lumber instead and seal that.
Thank you Jim This is why I came here, LOTS of information. I heard about the salt issue and didn't even think about salt treated lumber causing the same issue.

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perchin
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The 14' Jet boat project

Post by perchin »

Tis the copper in the treated lumber that reacts with the aluminum :wink: Can't wait to see her maiden voyage. 8)

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ihavenoideawhattoput
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The 14' Jet boat project

Post by ihavenoideawhattoput »

Boats over all view
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Input: you can see the 1/8" bar on the bottom to keep from pulling the bolts into the boat along with half the lake, there is another one of these on the inside of the boat also. Sanded everything the 5200 would touch for good stick.
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Inner support brace
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Overhead motor install shot
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Rear Tow Hook Brace and Tow Hook (kids need a place to put a tube)
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Rear Lag Bolts and Epoxy, Still working on the sanding, have to take a break from the sanding, my hand gets tired.
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4 lag bolts in rear and 5 stainless steel machine screws along the top edge, aluminum transom was rolled under, drilled, and sealed, then covered in putty to make it look cleaner, the main frame will NEVER come out again.
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Those 5 upper screws, you can also see the waterline vent in the upper right.
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Outer Water Vent
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If you want anymore photo's of certain parts let me know, I have more located here https://www.flickr.com/photos/23923527@ ... 375334682/

Tonight I have to get the pressure treated wood out of the dang transom then I will be back on track to get this project complete by the end of the month.

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Jim
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The 14' Jet boat project

Post by Jim »

Coming along great man! Your really thinking things through.
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fender66
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The 14' Jet boat project

Post by fender66 »

Amazing job. Can't wait to see it in action. Possible video later???
Peace,

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Loggerhead Mike
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The 14' Jet boat project

Post by Loggerhead Mike »

sweet! nice work, pretty jelious of that shop

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The 14' Jet boat project

Post by bassboy1 »

I have a major concern with the tube tie point. Tubes put a hell of a lot of force on their tow point - and much of the time impact force.

It looks to me as if the tow point only goes through the single layer of transom aluminum, with the small angle backup plate, as well as the factory tie down ring back up plate. You need to get whatever structure that tow point is on going all the way across. I see you have the slightly turned up lip on the top of the angle going to the wood, but as you can see, the outside of the radius has started cracking already. 6000 alloy aluminum doesn't bend very well at all - just cracks, like you've seen. Brake bending an extrusion like that is weakening the (already weak, as that is 6063, not 6061) piece of aluminum angle.

That tow point really needs to be attached to something SOLID, that runs the entire width of the boat. You may even want to, after putting some structure all the way across, still put a ring on either side of the transom, and use a bridle, to get the load off to the edges, as opposed to right in the middle of a span.

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ihavenoideawhattoput
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The 14' Jet boat project

Post by ihavenoideawhattoput »

bassboy1 wrote:I have a major concern with the tube tie point. Tubes put a hell of a lot of force on their tow point - and much of the time impact force.

It looks to me as if the tow point only goes through the single layer of transom aluminum, with the small angle backup plate, as well as the factory tie down ring back up plate. You need to get whatever structure that tow point is on going all the way across. I see you have the slightly turned up lip on the top of the angle going to the wood, but as you can see, the outside of the radius has started cracking already. 6000 alloy aluminum doesn't bend very well at all - just cracks, like you've seen. Brake bending an extrusion like that is weakening the (already weak, as that is 6063, not 6061) piece of aluminum angle.

That tow point really needs to be attached to something SOLID, that runs the entire width of the boat. You may even want to, after putting some structure all the way across, still put a ring on either side of the transom, and use a bridle, to get the load off to the edges, as opposed to right in the middle of a span.

FIXED

Measure transom
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Mark for cut
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Cut
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Set up table saw to rip 1" thick transom
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Damn 10" blades
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Thats better
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Mark to fit(13 year old son as clamp) note to self buy some clamps.....
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Use a strait edge use table saw to cut :)
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Drill holes for tow hook
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GET BEER: grab new chisel, mark template for plate, yes it is strait
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Pay Dirt
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Now what you don't see is there is a piece of 2" by 1/8" flat bar between the aluminum transom and the 2x6 and this guy
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Measure twice cut once
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