Instructables
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Picture of Ornithopter
DSC00336.JPG
Here's how to make an ornithopter powered by a rubber band.


You will need the following: (All my measurements are in inches.)

Wood: (Balsa works well, but i used coffee stirring sticks)

2 x 1 in.
2 x 1 1/2 in.
1x 2 1/2 in.
3 x 3 1/2 in.
1 x 4 1/2 in.
2x 5 in.

Wire: (paper clips work well)

1 x 2 1/4
2 x 2
1 x 1 1/4

Other Stuff:

Rubber Band
Super glue
Needle nosed plyers
beads
glue gun
Tissue paper (Other light materials work.)

 
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Step 1: The Body

Picture of The Body
First, cut out all of your wood and wire, Then start Gluing together.
Take your 4 1/2 in. stick and glue on the 1 in. sticks as shown in the picture. Then glue the 2 1/2 stick across the top.

Step 2: The Tail

Picture of The Tail
Then glue your three 3 1/2 pieces together in a triangle.

Step 3: The Wire

Picture of The Wire
After that, bend your wire as shown in the picture above.

Step 4: The Beads

Picture of The Beads
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Now you can glue your beads on and put the wire pieces on (don't glue the wire! they should turn freely.)

Step 5: Tail

Picture of Tail
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Glue the tail wire piece on.

Step 6: Wing Spars

Picture of Wing Spars
DSC00357.JPG
You'll need to glue the 5 in. sticks to the wire pieces. then take the 1 1/2 pieces and punch two holes in the end and slip the ends through as seen in the picture.

Step 7: Wings

Picture of Wings
Here's the wings you'll need to hot glue them to the spars. As for the tail just trace it and cut it out.

Step 8: Finish

Picture of Finish
Just attach a rubber band, wind it and give it a toss!


Ask me for any questions

Enjoy!
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i am confused in step 6 i made it 3times but i does not work

i made it but it is not working

McChubs3 years ago
I am confused, plz help. Where di the beads go, it is confusing and for step 1 the body which way does the 2 1/2 go?
the beads act as bearings so they go on the wire pieces at the joints, just makes it run smoother, and for step 1 the 2 1/2 piece lays across the two 1 in sticks
that you glued on to the body, so for the confusion, this was one of my first ibles, i need to update most of them

I had trouble making sure the beads were in the right place and struggled to glue them there. I used part of a corrugated plastic advertising sign (Estate Agent/Realtor) to hold the beads perfectly front and back, for not much weight.

Emsaid (author)  pie popper3 years ago
OOPS! haha that was actually me right there ^ my sis left her acount logged on!
sasorin3 years ago
I need help! Everytime I try and make holes in the wood, it splits. Any advice?
AjeyN sasorin4 months ago

A red hot sewing needle makes nice clean holes without splitting the wood ;)

try to put masking tape around the area before putting in the hole.
Might not be solid enough, you have to ensure the fibers stick to each other.
Glue the area of the wood you wish to make a hole in. Let dry. Hope this helps.
BrodyM6 months ago

well mine did not fly do not know why help me please

it´s beautifull and simple in the photos, but, when we are goingo to try doesn´t work... fail... step 6. that´s a pity!!!

sidshr1237 months ago

have u ever tried an rc ornithopter....if yes please instruct me in making one

JohanN47 months ago

Good inspirations, nice one :) I made mine with bamboo only and it flies well!

Check the video:

Will make tutorial soon.

regards,

JanN

the clone1 year ago

what did you make the wings out of?

Imetomi1 year ago
What is the mass of the ornithopter?
Emsaid (author)  Imetomi1 year ago
Sadly I no longer have the ornithopter anymore. I'll have to re-make it and weigh it. I have to admit though that this model is fairly heavy as it is made with a heavier wood. Though the point of this ible was to show people how to make a working mechanical model with easy to find materials. It did fly but it was not the best ornithopter out there
jid46113 years ago
could you use popsicle sticks?
Emsaid (author)  jid46113 years ago
you could but the idea is to use as little material as possible so they might be to heavy but you could try, you could mybe break them in half long ways
Could we use plastic straws? They're pretty light...
ItsmeNivas1 year ago
awesome mechanism........(y)
lmendoza112 years ago
Mine wont spin properly, and the rubber snaps. How fast must it flap for it to take flight?
One other very important thing to test and adjust is the distance between bends on the driver and driven cranks so that they don't stop. Making a bigger ornithopter would make reducing friction easier,too.
Emsaid (author)  lmendoza112 years ago
you may need to check each pivot point and make sure there is the least friction possible, finding the right beads is important. try a thicker rubber band (not to thick, other wise it will snap you thopter) and surprisingly it doesnt have to flap very fast to take flight, it just needs constant flapping. also the lighter the materials used will make for longer flights.
eyesee2 years ago
Can fly you
DrJase2 years ago
Great 'ible! Am definitely going to make one (I had quite a collection of Starbucks coffee stirrers!)

Any cance of a video of yours in flight?

лким2 years ago
Вот немного по махалётам http://xn--80ahduedo.xn--p1ai/machol_ti.html еще бы чертежи махалётов
awesome design
loved it!!
Raaunak3 years ago
I have already built one, but the problem is that the rubber band is unable to turn the wooden pieces.
krra yaar mazedaar chiz banai hai ye .............karre launde
good frnd,,,
what if you dont have tissue paper? what other kind of peper would you use? i dont have tissue paper. only paper towels and toilet paper. and the toilet paper is to small lol.

so if you had to choose between wax paper, tin foil, napkins, or paper towels to make the winds, what would you choose? lol. please help.   :D
 Plastic bags
lets see... out of those i would choose wax paper, but i think plastic bags would work better, tissue paper also works great
Emsaid (author)  pie popper4 years ago
oops! signed into the wrong account! so the above comment is actually from me
dombeef Emsaid4 years ago
Oh ok, won't wax paper be too heavy?
Beduk dombeef4 years ago
wax paper is not heavy.But i think aluminum foil will be better since it is light and sturdier.
dombeef Beduk4 years ago
Aluminum foil is too thin, it rips easly, and it crumples easly too
you should also take into account aluminum foil is kinda heavy because it is technically metal, well... yeah, by the way thanks for the instructible! I used it for a science fair project with which wing material works better, aluminum foil (Iron Man) or plastic bag (Plastic Man) Marvel and DC collide again.
Hope your science fair entry did well, very clever, are you going to become an engineer? Many I ask what your findings were, foil or plastic?

Has anyone tried using a foam-alight (aka Styrofoam, expanded foam) sheet material for the wings? It should work, ample stiffness and lightweight, just need a very thin piece.
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