Operation X-Craft: A Full Size Electric Hovercraft (Mar 19th Update) - Page 13 - RC Groups
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Apr 19, 2011, 03:04 AM
Micro Boat Forum Founder
boredom.is.me's Avatar
I got held up big time by "life" and "stuff", but I'll show what's done later on today. It is 4 am and I am going back to sleep.
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Apr 19, 2011, 09:43 AM
Platinum Ball3r
custom t's Avatar
Ok yay!
Apr 20, 2011, 03:12 PM
Micro Boat Forum Founder
boredom.is.me's Avatar
Just a little something.
Apr 20, 2011, 03:13 PM
Micro Boat Forum Founder
boredom.is.me's Avatar
Idk why they are upside down, but you get the idea.
Apr 21, 2011, 07:47 AM
Foam Flyer
FalseHope's Avatar
Wow! A hovercraft that hovers inverted. You better watch it, the military will come calling for that kind of technology.
Apr 22, 2011, 06:20 AM
TheyreComingToTakeMeAway!
derk's Avatar
haha very cool BIM! you gotta get it to work and at least take one cruise down the street before shelving it
Apr 30, 2011, 09:36 PM
We can rebuild it!
djdavies83's Avatar
Nice work mate! Glad I'm on my laptop, I just held it upside down!


You uploaded at 4am, it happens.

Oh found micro outboard wind up motors, should be able to fit a 6mm or something in them.
May 01, 2011, 07:29 AM
Micro Boat Forum Founder
boredom.is.me's Avatar
Good find dj.

Due to stupid reasons, this will have to be postponed.
May 01, 2011, 06:24 PM
We can rebuild it!
djdavies83's Avatar
The hover craft or the micro out-board? I hope it's not the hovercraft.
May 01, 2011, 08:00 PM
Micro Boat Forum Founder
boredom.is.me's Avatar
It's not the outboard.
Jun 25, 2011, 07:05 AM
Glover
Brady93's Avatar
Hey.

I am interested in building one of these as a school project (Senior school composite materials studies).

Any more updates? Keen to see more, this is the best hovercraft i've came accross so far. It looks excellent.

I've got access to pretty much any petrol two stroke or four stroke engine. I have a workshop full of them i can use. Lol.

I've just sent away an email to a local foam specialist to get a quote.
I've been thinking of using two 4 stroke 150cc Briggs and stratton engines one at the front and one at the back, just for the hover, and a 2 stroke Victa 150cc engine for the propulsion prop.

Do you guys think this may be overkill? Or maybe to heavy?

What conventional materials can i use to make a skirt?

My aim is to carry a payload of 200kg.

Is this unrealistic with those engines?

Open to all idea's, thought's and advice.

Cheers
Brady
Jun 25, 2011, 10:14 AM
Micro Boat Forum Founder
boredom.is.me's Avatar
I'm continuing this project when I get to the states. There, I will actually have support. I think I may even start over. It is actually pretty cheap and I will have access to a larger cnc machine. Every part will be more precise and exact. I honestly do not like the quality of the current one, but it is way more than acceptable.

Brady,
You should know what your doing with the material. The foam by itself will only support a load if there is a hard surface. In my case, that hard surface is either a 2'x4' piece of wood or plexi. The wood is heavy, but I have been using it when I was working on the hull. In your case. You will need way more than a driver support. You will need to build an enclosure for the lift fan and you will need a bit more support, because of weight and heat aspects.

I personally prefer two strokes because they are significantly lighter, often times half the weight, than their four stroke counterparts. A modern two stroke is also just as clean or even cleaner than a four stroke. If the two stroke is not so modern (80s-90s), then I would suggest routing the exhaust to the side, not underneath.

I'll be back to this, but I may use bigger motors.
Jun 25, 2011, 10:33 AM
Micro Boat Forum Founder
boredom.is.me's Avatar
I'm also done dealing with HK. I'm going to a technical school. The needed electronics should be able to be produced in house.
Jun 25, 2011, 10:37 AM
Micro Boat Forum Founder
boredom.is.me's Avatar
I also had further updates, but at this point, a little more waitin wouldnt hurt. I got the entire thing built, except the skirt.
Jun 26, 2011, 05:35 AM
Glover
Brady93's Avatar
Quote:
Brady,
You should know what your doing with the material. The foam by itself will only support a load if there is a hard surface. In my case, that hard surface is either a 2'x4' piece of wood or plexi. The wood is heavy, but I have been using it when I was working on the hull. In your case. You will need way more than a driver support. You will need to build an enclosure for the lift fan and you will need a bit more support, because of weight and heat aspects.

I personally prefer two strokes because they are significantly lighter, often times half the weight, than their four stroke counterparts. A modern two stroke is also just as clean or even cleaner than a four stroke. If the two stroke is not so modern (80s-90s), then I would suggest routing the exhaust to the side, not underneath.
Excellent, thankyou.

Will take into consideration everything you said, on that information, i might make it one person for simplicity.

Quote:
I'll be back to this, but I may use bigger motors.
Can't wait to see this.

I was talking to an experienced friend the other day, he said it would be a good idea to cover the polystyrene foam with a thin layer of epoxy resin to seal it up against weather, and so the craft has a longer life span. A little extra weight for a much longer life span, and you can always upsize the motor if needed.

I am looking to make my hovercraft very efficient, so i will be toying with ideas along the way. Would you like me to share info with you as my design process proceeds?
I'm sure you've already thought of everything, but you never know. Lol.

Brady


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