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9hp single seater airboat prototype

Hello everybody, my dad is building a pontoon boat about eight feet long and he's using foam board insulation for the pontoons to keep it light as possible. He's got a older model 9 horsepower two-stroke high performance motor with about a two-foot wooden prop. My brothers and I think he's crazy to think he can run it Upstream in the river with any kind of speed. I'd love to farm your expertise because I don't want to rain on his parade and I don't want him to waste his time either. It will probably weigh all told about 270 with him in it. Thanks in advance fellas.
Greg
 
It is not going to plane with a 9 hp engine

If he spins the prop to fast it will explode

Best case scenario is it pushes him 5-9 mph my opinion

There is a section on "MINI" airboats maybe you can find some additional info in those threads.

Welcome to the site
 
Welcome to SA! :salute:

As swamp stated don't expect to much performance, but hey let pop's have some fun and maybe share some pics along the way.

Grabbed a few examples of some low powered rigs. :thumbleft:

[youtube-video]https://youtu.be/HIbiUYsm7-0[/youtube-video]
[youtube-video]https://youtu.be/-W9enuMbckE[/youtube-video]
[youtube-video]https://youtu.be/iSb25Fe0-yc[/youtube-video]
 
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