Introduction: Elastic Band Flinging Helicopter

This is a toy I used to play with as a kid. It was always a cheap plastic one that I bought, but figured it would be easy enough to make, so gave it a go.

Obviously you can play with the design depending on what materials you have lying around, but this should give you a rough idea of what direction to go...

Date Made: June 2013
Approx Cost: £0 (recycled materials)
Approx Time: 0.5 to 1 hrs
Difficulty: Easy

Step 1: What You Need

Materials you need are:

*some fairly stiff plastic (I used the packaging from a roller blind)
*a big thick elastic band (I used one about 200mm long)
*a picture hook
*a piece of dowel (I used the adjuster from a venetian blind, which already had the hook screwed in the end)


Tools you need are:

*some extra strong glue
*a hacksaw to cut the wood (I used a dremel)
*scissors or knife to cut the plastic
*pliers

Step 2: Make Propellers

Cut two pieces of plastic approx 30mm x 150mm.

Next fold them on an angle about 30mm from one end as per the photo.

Make them both match.

Step 3: Make Main Body

For the main body cut a piece of the dowel approx 200mm long.

Cut a slot in one end almost the same length as the fold line.

In the other end cut a small hook along the same plane as the slot, that way the propellers wont catch on the body when released. Make the hook small, but check the elastic band will latch on to it. If this is too big, it will catch on launch and misfire.

Step 4: Form Helicopter

Glue the two propellers together, but make sure that you don't glue too close to the fold line.

Next glue the propeller in to the slot on the dowel. Make sure the glue is strong and can take some good force - if it doesn't, you will hurt yourself later!

Only fix the propellers to the body below the fold, so that when releases they can bend at the fold line.

Trim the propeller so that it tapers in to the width of the body

Finally fold the propellers along the fold lines.

Step 5: Form Handle

Cut the dowel to approx 200mm in length - long enough to hold.

Screw the picture hook in to the end of the dowel.

Fix the elastic band to the hook. I did this by putting the elastic band through and then closing the hook with pliers. You could alternatively do it by means of a knot, glue, staple or you could drill a hole through the dowel.

Step 6: Launch

Hold the dowel bar in one hand, and the helicopter in the other. Holding on to the end of propellers together will ensure that they don't restrict the flight on the way up, then hopefully they will spring back on the way down.

Clip the open hook of the body in to the elastic band, pull back and release!

The helicopter should fly in to the air like a rocket, and then spin down like a helicopter!

You may need to play with the weightings etc depending on the materials you use, so you could put blu-tak on the end to make the front heavier etc.


WARNING: be careful of your hands and face! If this misfires and it hits your hand/face, it really hurts (I know from experience!), and if it hits you in the eyes it could do some real damage. So best to wear gloves/glasses whilst testing! Also make sure that the picture hook is completely closed, so that the elastic band doesn't sneak out and hit you in the face!


Here is a video, you cant really see it whilst in the sky, but you can see it spin to the ground.


Step 7: 3D Model

I have created a 3d model of the handle and the main body, so alternatively this could be printed. I did this on tinkercad, and can be found by searching for "helicopter flinger", or below.

Please note that this 3d model should really be classed as a prototype as I do not have access to a 3d printer so cannot print and check that this is strong enough for the purpose intended. I presume different materials would behave differently anyway.


Comments

author
venkat1822005 (author)2016-05-12

not bad

author
Howto246 (author)2015-03-22

cool

author
Arthak (author)2015-01-11

very good

author
Mr_o_uk (author)2013-09-06

I have updated the tinkercad model to round off all the ends, as this should reduce the chance of anything 'catching' on launch...

author
dozer789 (author)2013-07-22

Congrats on winning the contest. I have a Syma 107/107g helicopter and it is a lot of fun!

author
bajablue (author)2013-07-03

What a fun toy!

bajabot.jpg
author
Mr_o_uk (author)bajablue2013-07-04

Thanks, wasn't expecting to win! Some awesome instructables in that contest...

author
awesomecreations (author)2013-06-12

I was thinking about making one of these a few weeks ago, but with an LED at the hook end so it lights up the ground where it falls (and looks cooler). Nice instructable!

author
Mr_o_uk (author)awesomecreations2013-06-12

Nice idea. Look cool and makes it more visible to others.

author
awesomecreations (author)Mr_o_uk2013-06-12

Also good because people probably won't step on it. Although, they might rush to get it next and stand on it like that. Happened to my flying stuff many times...(especially cats and ornithopters)

author
Prince_Teemo (author)2013-06-11

you are from England?

author
Mr_o_uk (author)Prince_Teemo2013-06-12

Yes, southern England.

author
Prince_Teemo (author)2013-06-11

well ,very interesting. (*@ο@*)

author
HollyMann (author)2013-06-11

Good job!!! awesome!

author
neo71665 (author)2013-06-11

nothing like the dangerous weapons, I mean toys of our youth.

author
Mr_o_uk (author)neo716652013-06-11

Yeah, I wasn't sure if I should put more warnings on. Everything seems dangerous to me now, but I survived my childhood so it couldn't of been that hazardous!!!

About This Instructable

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Bio: I studied Maths and Computing, worked in an Operation Research department, retrained as a civil engineer, worked on site for some major projects. I'm ... More »
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