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Outboard for Inflatable Boat

Old 11-24-2020, 10:27 AM
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Default Outboard for Inflatable Boat

I have a 16ft Saturn SD488 that is rated for 40hp and 175lbs on the transom. The tubes are heat-sealed just like Hypalon so they do well in the son, but the floor is hand glued.

My research states that I should get around 25 - 30hp 4 stroke to stay under that transom weight limit. I wanted to know if this is correct thinking as I am be needing a tiller with this short shaft (15") outboard. I will be getting a trailer, but don't know what length bunk trailer I should get or should I custom build. Is the used market good for this?

Thank you for your comments!

Old 11-27-2020, 12:54 AM
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I had a similar boat that's 15.5 ft. I put a 25 hp short shaft 2 stroke on it and I could run 20 mph with 3 guys with fishing gears on board. I also had a 2.3 hp outboard that's 40 lbs on the transom. There's still plenty of throttle left. You'll be ok with 25 -30 hp outboard. I bought a trailer from Harbor Freight and built a flat bed trailer for it. I deflate the bottom for towing. When I get to the dock, I pump up the bottom pretty quickly. I like the flat bed for this type of boat, because if the tube is poked, then the flat bottom can still be secured on the trailer. The only thing I should have done is putting the rail guides on for easy loading the boat to the trailer.
You can measure the boat bottom to determine what length that you need for the bunk. A used trailer for small boat or a jet ski can be modified to fit your boat.

Old 11-27-2020, 01:49 PM
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stevechumo How did you customize your boat with those nice seats? I was looking for a tiller outboard, but is it smart to possibly upgrade to a console. Saturn boats sell an attachment console without wiring.
Old 11-27-2020, 02:26 PM
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Old 11-27-2020, 02:31 PM
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I hope the pictures show you some ideas about the seats. The side rails help big time and keep me inside the boat. If you'll only use it on calm water, then tiller control will be fine. I only used tiller control, but I wish that I put on the center console for ocean use. It'll be much better with the center console that you can have throttle control and steering control.
Old 11-27-2020, 07:11 PM
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Originally Posted by stevechumo View Post
I only used tiller control, but I wish that I put on the center console for ocean use. It'll be much better with the center console that you can have throttle control and steering control.
What you said right there has made me keep thinking about the real use of my boat. I bought this super large inflatable without hopes that I could use it for rivers and in Boston Harbor and Cape Cod (Inshore Only). Now I can possibly open up my thoughts on a non-till outboard with a basic console that I can modify with electronics. Now I am getting excited!
Old 11-27-2020, 09:00 PM
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Originally Posted by Fishing At Work View Post
What you said right there has made me keep thinking about the real use of my boat. I bought this super large inflatable without hopes that I could use it for rivers and in Boston Harbor and Cape Cod (Inshore Only). Now I can possibly open up my thoughts on a non-till outboard with a basic console that I can modify with electronics. Now I am getting excited!
Do it and you won't regret. I think it's better to install the console at the front or at the middle, where you can see much better in rough waves. I had a plan to do that, but I sold it. On a good day, you can take it outside of the harbor. The boat is very safe to handle in 2 ft swell. A 25 hp outboard will sip gas. I'm interested to see your project.
Old 11-27-2020, 09:04 PM
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This is me, my buddies, and the boat:
Old 12-02-2020, 07:47 PM
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Looks like you are at LA or Long Beach harbor.
Old 12-02-2020, 11:30 PM
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Originally Posted by sharkwaters View Post
Looks like you are at LA or Long Beach harbor.
Heh heh heh! You're right. I was in Long Beach.

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