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Old Jun 27, 2006, 09:18 PM
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RC HoverCraft!! This thing MOVES!

My friends and I were sitting around on a rainy day bored out of our mind. (as usual) We were in need of something to do badly and we really wanted to fly our planes. Since we could not fly we did the next best thing. Made something out of our RC gear that we could use/ Race in the garage without getting the gear wet. After about an hour and a half we thought about building hovercraft. We then set off to build them and after about 3 test models we were able to create a model that would lift all of the RC gear with one motor and move it FAST! The Models use one servo and one J-250 Motor. These things really haul butt big time. They go so fast that if you do not limit the speed they will ground loop and flip. We raced them on the dry cement and kids could not keep up with them on their bikes!

Any questions?, feel free 2 ask!!!
Matthew Zizzi

Pics,
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Old Jun 27, 2006, 10:18 PM
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pretty cool !!! have you tryed it on 2 cell packs ???
what are the balsa (i assume) strips for ??
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Old Jun 27, 2006, 10:36 PM
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pretty smart! ready for plans!!!!
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Old Jun 27, 2006, 10:41 PM
Mat
The ground jumped at it!
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I have made many things like that except I ushually mount the motor on a servo to steer it left and right.
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Old Jun 28, 2006, 09:16 AM
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Very clever funneling the prop wash to create your air cushion. I'm planning on doing a full-on hovercraft this summer, but this looks like it would be fun to try!
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Old Jun 28, 2006, 09:59 AM
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No inflatable skirt of any type, interesting.

Yes, plans please ! !
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Old Jun 28, 2006, 10:02 AM
Yes, right there.
SpleenRippa's Avatar
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Quote:
Originally Posted by akerkhof
Very clever funneling the prop wash to create your air cushion. I'm planning on doing a full-on hovercraft this summer, but this looks like it would be fun to try!


Many real hovercraft also channel prop wash into the airskirt/plenum chamber.
Check out www.hovercraft.com. Some cool plans there... Been on the verge of building a small 2 seater for years now :-p
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Old Jun 28, 2006, 10:08 AM
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Hey SpleenRippa,

NICE avatar.......................
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Old Jun 28, 2006, 10:39 AM
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-Well, it did have a skirt, but after racing it on concrete it ogtda tore away! It was weird though, the hovercraft did not seem to mind less skirt, the only time it would not work was with no sirt at all. Well it did work but I needed higher speeds to turn.

-The balsa strips are to keep the craft from flexing. When full throttle was applied the craft wanted to bow in that area since there was a gap in the fuse! It was a fast solution.

-That is a 2S pack on the hovercraft. (E-Tec 2S 700mAh)

-As far as plans go I will do all that I can. Would you guys just like specs or would you like PDF's? I can give the specs fairly quickly but I will need help making the PDF's!

I'll see what I can do as far as plans!
Matthew Zizzi
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Old Jun 28, 2006, 11:12 AM
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What materials and how did you make the skirt?

Dimensions and CG(is that right for a ground vehicle??) would suit me, Matt.

Thanks.............
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Old Jun 28, 2006, 11:50 AM
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Heres an old thread where people were making hovercraft as well. Seeing yours made me think of it, so now I just might have to make one.

http://www.rcgroups.com/forums/showthread.php?t=271708
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Old Jun 28, 2006, 12:36 PM
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The Skirt was a foodlion bag! LOL

Any Ideas on how I can get the plans to you guys? I could draw up some crude plans in MS paint or I could Make Sketches on paper and scan them. Or if some one wants to draw up the plans in a CAD program I could send you all of the dimensions. Or better yet I could learn how to use a CAD program myslef. I would love to see more of these things! This model seemed a little nose heavy with the CG at 1/3 lenght. I think that is it better this way though because it keeps the nose from getting to much air under it. (Less ground looping) Give me about 12 hrs and I will have all the dimensions draw up for you guys.

Matthew Zizzi
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Old Jun 28, 2006, 12:59 PM
Yes, right there.
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Comox, BC, CAN
Joined Jul 2003
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I wonder how feasible it would be to do a rigid skirt (forming a plenum chamber) vehicle, with the lift motor(s) mounted on gimbles or articulated frames of some sort- so that
servos could be used to angle them- to provide lift and directional thrust?
Think of the blowers from David Drakes Hammer's Slammers novels :-)
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Old Jun 28, 2006, 01:00 PM
Yes, right there.
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Man, now I'm thinking... Might also be possible, with enough pressure in the plenum chamber, to carry a light turret and a Tamiya battle system (or something) :-o
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Old Jun 28, 2006, 01:03 PM
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Quote:
Originally Posted by MHZizzi
...
Any questions?, feel free 2 ask!!!

Matthew Zizzi
What is a hovercraft doing in the Aircraft-Electric-Airplanes forum?

Hovercrafts don't fly!

Jürgen
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