Introduction: K'nex Airfoil

Picture of K'nex Airfoil

Welcome to my instructable on building a k'nex airfoil!

I designed this airfoil in the likeness of a balsa model airfoil. The airfoil is constructed of many "ribs" linked together which can then be covered with paper/cardboard or the like.

The structure is quite flimsy, however I plan to reinforce the structure with two 1/4 inch steel rods which will slide into the holes on the connectors in the front and rear of the wings.

I have built two versions of this wing. One large, and one small. I envision two different sized planes using these wings: 1. A very large plane using the large wing as the main wing and the small wing as the stabilizer. 2. A smaller plane using the small wings as the main wings with a flat stile stabilizer.

I built this a while ago, curious if I could build a working k'nex airplane with the same structures used in balsa airplane models. If I weren't currently working on another large project I would have attempted to complete the entire plane. However I still intend to build a complete working airplane out of k'nex someday.

Step 1: Large Airfoil

Picture of Large Airfoil

This is the large wing design. Link as many of these together as needed to achieve the desired length.

Step 2: Small Airfoil

Picture of Small Airfoil

This is the small airfoil design. Link as many of these together as needed to achieve the desired length.

Thanks for viewing my instructable! I hope you enjoyed it. Be sure to check out my other instructables!

If you post an instructable which uses something from one of my instructables, let me know, I'll post a link to your 'ible in my applicable 'ible


Knextremely stupid (author)2016-09-06

To make it lightweight you could use cling wrap

Great Idea! Thanks! :D

birdycrazy (author)birdycrazy2016-09-23

I've been trying to come up with a simple and effective covering for the wings which doesn't require gluing or doping the covering to the k'nex. Cling wrap sounds like it would work great!

Linkin_J_Knex (author)2016-09-04

Looks good :) Loving your posts and looking forward to seeing more of your creations!

birdycrazy (author)Linkin_J_Knex2016-09-04

(!!)> :D

The Knex Inventor (author)2016-09-03

Neat project! This could probably be incorporated into a larger K'NEX model airplane model.

Thanks! Yes, I inted to build one someday! :)

You're welcome! Great! I am looking forward to it.

About This Instructable




Bio: I have an Associates Degree in Electrical Engineering Technology and I am currently working as a manufacturing Engineer. I have many interests which are ever ... More »
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