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Boogie board airboat spins out too easily

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Boogie board airboat spins out too easily

Old 01-30-2022, 04:00 PM
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Stiltman0287
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Default Boogie board airboat spins out too easily

Hey guys I built an RC airboat out of a full size boogie board years ago. It has a Super Tigre S3000 on it and I mix my own methanol and klotz castor for fuel. I have always had an issue with it spinning out while I'm trying to go straight. I just bought some wooden trim which is about a 1/4 inch thick and 3/4 in wide. I wanna cut to the length of the boogie board and epoxy it to the bottom. My question is how many strips do you think I need on the bottom to keep it straight but not restrict turning?

Old 01-31-2022, 07:54 AM
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Stiltman0287
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I decided to replace the boogie board too.

Old 01-31-2022, 04:42 PM
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1QwkSport2.5r
 
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The strips on the bottom are bad news if you want to turn. At all. Your spinning out problem is due to your rudders bring WAY too small. They big of an engine needs a big set of rudders. At least half prop diameter for height and width at minimum. 2/3 to 3/4 prop diameter for width would be better.
Old 01-31-2022, 06:10 PM
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Originally Posted by 1QwkSport2.5r
The strips on the bottom are bad news if you want to turn. At all. Your spinning out problem is due to your rudders bring WAY too small. They big of an engine needs a big set of rudders. At least half prop diameter for height and width at minimum. 2/3 to 3/4 prop diameter for width would be better.
I didn't wanna wait for an answer lastnight and this morning so I was doing my own research and I came up with what you just said. This is what I did. Went from 5 inches long to 8 1/2 inches and 2 inches higher than before.

This is a comparison. New VS old.

Old 02-02-2022, 02:38 AM
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1QwkSport2.5r
 
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I would go deeper/wider yet. By another couple inches. At least. What size prop are you using?
Old 02-02-2022, 05:22 AM
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18x10
Old 02-02-2022, 08:24 PM
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I’d suggest the rudders be at least 9” tall with 10” being better, and 8-10” deep. Couple this with a 40-45 throw and you will have some impeccable steering and control. Having the boat properly balanced for center of gravity is important and shouldn’t be overlooked.
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