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So who else has got a full size hovercraft in the works?

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Loveofchaos8 years ago
Ive made 2 hovercrafts before. the first one was probably 1 1/2'X3' and the second one was probably 1 1/2'X4 1/2'. contrary to all that I had expected, the little one which was made from 1/4" wood, masking tape and visqueen worked much better than the one with duct tape and stronger, although the ductape one will support heavier weights. _ My brothers on the Smaller. And the larger is running. (Sorry for the bad quality on the small one, it was from a cell phone while it was moving.)
Hovercraft2.JPGHovercraft3.jpg
look into arrowprop.com good prices and props for everything
limpnjim9 years ago
Im new here so gimme a brake. lol. i was looking at the hovercraft plans and feel i to can make a screaming death machine. all i have to work with is a 12.5 hp 18.5 hp and a 3.5 hp side pully motor. im planning to use a blade from a 4ft box fan for lift and a large blade from a a/c condenser for push.to handle the extra weigth. im thinking 5/8 marine plywood. I live at the coastal plains of texas and the swamps make a good place to run into trouble. just one thing bothers me. will the craft rise high enough to go go over a alligator? it seems to bother me that it could be a problematic. its the little things that bring us joy. as far as my skills. i have 30 yrs in maintenance and contruction plus almost every tool there is. soon i hope to add a recipe for home made wine if anyone wants it thanks to all
You are going to need more than a box fan (even at 18.5 horsepower). Try an airplane propeller-they are made to move air better at high rpm. The hight of your skirt and how much air you are blowing out (how high the skirt rises above the ground) will determine clearance.
vince q jtobako9 years ago
where could i get a prop on the cheep?
Universal Hovercraft sells purpose-built hovercraft propellors. They can be pricy, but you can save a lot by just buying the rough-cut prop, and finishing it yourself. That's what I did with my full-size craft, and it works great. Here's the link: props
jtobako vince q9 years ago
You could start at the local (small) airport, ask where repairs are done, then ask them if they have any that don't qualify for aircraft but should be safe for what you are doing. I believe that props have a (legal) life measured in hours of flight, but would have plenty of life left for a hovercraft (18 hp v. 100+ hp). If that doesn't appeal, you could make one
jtobako jtobako9 years ago
forgot the link : )

Prop tutorial
vince q jtobako9 years ago
they don't make airplane props under 4 ft. but i found some for relatively large RC planes that will work.
fortneja8 years ago
I built a UH-10f (plans can be found here).

My hovercraft is the size of a small car, and seats one person, maybe two if they're small. It uses a single 10 hp horizontal shaft engine with a diversion box to create lift. The rest of the power goes to thrust. It is powerful enough to blow you over at 5 feet, so no issues with power. I will post an instructable about it soon.
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