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Bratt trapper build

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Bratt trapper build

Postby ccg818 » Sat Apr 04, 2020 7:31 pm

I have been meaning to post some status pics of my build I started last year for awhile. It’s a 15ft bratt trapper with a Jetstream windshield and mini jet intake, posi trim nozzle, reverse bucket. Yamaha 1.8l SHO supercharged motor. It’s been a interesting project seeing as I’m not much of a welder and have never welded aluminum before this. I’ve had a few buddies help me out and definitely wouldn’t have been able to get it as far as I have without their help. I still have to extend the wireing harness and that’s just about it to get it on the water, the river just broke here a couple days ago so hopefully get it out for a quick test next week, if the launch is still open by then..
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Re: Bratt trapper build

Postby ccg818 » Sat Apr 04, 2020 9:08 pm

The original bratt Jet kit came as a center console but I decided to do a windshield instead with a drop bow. The boat will be mainly used for sturgeon fishing on the river so I pushed the windshield ahead and shortened the drive shaft around 8” to push the motor back far enough to be able to sit and fish out the back without ramming my knees into the engine cover. The boat should weigh around 1500lb empty. Hopefully it’s still tough enough to take a fair bit of rock contact but will see. I’ve definitely learned a lot and already looking forward to the next one!!
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Re: Bratt trapper build

Postby jetboatwanabe » Sat Apr 04, 2020 9:24 pm

I really like that kit with the windshield, also the firefish snapper. cool project looks good Sir :Drink1: :bash:
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Re: Bratt trapper build

Postby Reid01 » Sun Apr 05, 2020 5:43 pm

Looks great , blame 907 on Instagram did a trapper build if you need some ideas, so what all does Bratt include in the kit? Cost? How thick of bottom did you go? What mig set up are you using? Looks awesome I’m in the middle of a ten foot build from bulletproof welding in mayerthorpe just need the ice to go now for fist float
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Re: Bratt trapper build

Postby ccg818 » Mon Apr 06, 2020 7:34 am

Got it on the trailer almost ready to test
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Re: Bratt trapper build

Postby ccg818 » Mon Apr 06, 2020 10:35 am

Reid01 wrote:Looks great , blame 907 on Instagram did a trapper build if you need some ideas, so what all does Bratt include in the kit? Cost? How thick of bottom did you go? What mig set up are you using? Looks awesome I’m in the middle of a ten foot build from bulletproof welding in mayerthorpe just need the ice to go now for fist float


I just notice for whatever reason all my pictures show up sideways so not sure whats going on there. Anyway I did a 1/2" keel plate and 1/4" bottom with an double 1/4" plate all the way up the middle. I added extra stringers and chine extrusions for extra strength. All said and done i'm going to have around 37g canadian into it with trailer, wrap and top. I started the project using a Miller 252 with 30A spool gun then bought a Miller 255 pulse mig and that thing is the way to go for the thin stuff. Our Miller dealer in town took the 252 and gave me an awesome deal on the demo 255 so only cost about $700 to upgrade and is well worth it. I ran 3/64 5356 for the bottom and 0.035 4043 for the dash and windshield. Next time would probably use the 5356 all around with the pulse mig and now that my welding skills are a little better...
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Re: Bratt trapper build

Postby ccg818 » Mon Apr 06, 2020 12:48 pm

As far as what comes in the kit bratt has lots of options and you can customize it to however you want. I got Jetstream to take his windshield and widen the center window so it would fit my hull. It came in 5 pieces then just position and weld together. I bought a 48” brake and built the dashes myself turned out pretty good. I messed up the passenger side glove box so have to redo it...
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Re: Bratt trapper build

Postby ccg818 » Tue Apr 07, 2020 8:13 am

Getting close to the water test now..
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Re: Bratt trapper build

Postby Reid01 » Tue Apr 07, 2020 3:29 pm

Thanks for info looks great, where did you get your brake from? We got the same fish finder and I just read some mount the transducer inside the hull on a glob of silicone and it works I already mounted mine but maybe I’ll move it
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Re: Bratt trapper build

Postby JettinAK » Tue Apr 07, 2020 4:09 pm

Great job with the build, keep the pictures and updates coming. Hopefully next fall/winter I will be sharing my own mini build. I'm looking at going to the bigger end of a mini, say a 13-15ft with a ecoboost or a Subaru powerplant.
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Re: Bratt trapper build

Postby ccg818 » Tue Apr 07, 2020 6:19 pm

Reid01 wrote:Thanks for info looks great, where did you get your brake from? We got the same fish finder and I just read some mount the transducer inside the hull on a glob of silicone and it works I already mounted mine but maybe I’ll move it


I got the brake from busy bee tools in Edmonton. It was around $1000. 48” box and pan brake brake it works really good. Its a grunt for 2 people to do a 2ft wide 1/8 inch thick 90 degree but get its done. I had same fish finder in my last boat as well and liked it. Nice and simple and has gps. I havnt mounted the transducer yet but probably just go off the trim tab like I normally do.
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Re: Bratt trapper build

Postby Reid01 » Fri Apr 10, 2020 1:04 pm

So when you say sturgeon fishing on the river do you mean the north sask river? Where abouts? Is it open where you are right now? I’m a hour east of Lloyd and the nsr is froze solid yet
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Re: Bratt trapper build

Postby ccg818 » Sat Apr 11, 2020 6:45 pm

The south sask river at Medicine Hat. Season usually opens the end of first week of May. Water tested the boat on Thursday and went pretty good. Couple little things to fix up but overall very happy.
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Re: Bratt trapper build

Postby Reid01 » Sat Apr 11, 2020 10:21 pm

How was your planning speed and top speed? Looks like it’s drafts very well :Power:
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Re: Bratt trapper build

Postby ccg818 » Sun Apr 12, 2020 6:47 pm

I never looked at how slow it would plane but seemed really slow. It likes to cruise at around 4800rpm at around 22mph. I had it up to 51mph and it had a little more in it but backed off. I got the kinks worked out today and tested again. Tapered back my uhmw to let it flow better to the intake and added 2 6” by 6” plates to the extend to the back of the intake. Cavitation on hole shot is almost gone and it can spin donuts on plane and not cavitate. Super impressed with this thing so far
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Re: Bratt trapper build

Postby ccg818 » Wed Apr 15, 2020 7:13 am

Passenger dash and windshield is in and flooring is cut.
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Re: Bratt trapper build

Postby ccg818 » Mon Apr 20, 2020 11:47 am

Took it for the skinny water test and hit a few good gravel bars and no cracked welds or leaks so going to put the floor in and keep finishing. Hanging out with a couple firefish convicts.
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Re: Bratt trapper build

Postby ccg818 » Wed Apr 22, 2020 1:06 pm

Floor is in and engine cover started.
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Re: Bratt trapper build

Postby JettinAK » Wed Apr 22, 2020 3:27 pm

I can't tell from the pictures but what did you use for flooring? Is it painted plywood?
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Re: Bratt trapper build

Postby ccg818 » Fri Apr 24, 2020 6:44 pm

It’s treated plywood with a roll on bed liner. Turned out good will see how it holds up.
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