Introduction: Knex Seaplane

Picture of Knex Seaplane

I made this knex plane because I was bored and couldn't think of anything else to do.
The plane is very simple to make and doesn't use many pieces and none of them and cut or sanded.
Im sorry but theres not a parts list to this i took it apart before i had time to make one.
Please comment if you dont understand something im happy to help.

P.S give me good votes

Step 1: Making the Wings

Picture of Making the Wings

These wings go on top of the plane simple to make!

1. what you are making
2. make two of these
3. What the pieces are
4. the rods connect the two wing parts together

Step 2: Making the Wheels

Picture of Making the Wheels

You could probaly make this part with the first picture its really easy!

1. what you are making
2. Make this
3. Make two of these
4. close up
5. another close up
6. attach wheels to main body and your done

Step 3: Making Front of the Plane

Picture of Making Front of the Plane

this is the little red and yellow pieced thing on the front of the plane with the propeller.

1. what you are making
2. make the propeller
3. Make these
4. Make these
5. make these
6. make two of these
7. and finnaly make this
8. attach pic 6 and 7 togehter like this
9. put pic 4 on
10. put on pic 5
11 different view of picture 10
12. put pic 3 on
13. add the propeller and attach a grey connecter on the end

Step 4: Making the Main Body

Picture of Making the Main Body

This is the hardest part of the build

1. this is it, all you gotta do hard right :P

Step 5: Making the Tail

Picture of Making the Tail

The tail of the plane is quite simple

1. make this..
2. add this on
3. and this
4. different view of picture 2
5. make this
6. make this too
7. different angle of picture 5
8. another view
9. combine 5 and 2 like so

Step 6: Putting It All Together

Picture of Putting It All Together

this part is quite complicated, if you need help with any of this just comment me and ill try to help you as much as I can!

1. attach the main body and the front together
2 - 4 different views of the connection points
5. attach the top tail section to the rear of the main body
6. add the lower tail secton on
7. top view of the tail section
8. close up of the rear rudders
9. underneath view of the tail
10. add on the wheels
11. slighty moved view
12. add these on the sides of the main body
13. slighty moved view
14. finally add on the wings to the top using the rods
15. you are done!!! wippeee :P


xieandy18 (author)2011-11-19

i dont have those tires

What can i subsitude with

JazzBoy (author)2011-08-31

awesome much larger when made lol

Ymerej88 (author)2011-02-02

Ah, yes, I remember this one. Its quite a nice plane, and easy to make, even when you don't have the instructions.
But thanks for posting, I'm sure lots of people will enjoy building it :)

I built my own version of it a few years ago using a picture from a 1997-98 K'nex brochure. As you can see in the picture I used some panels in the wings to make them more solid.
I also made a spaceship based on the Star Cruisers on the opposite page.

spartanskunk (author)2011-01-29

Very nice. You should add it to the K'nex Air Force group.

Hephestus (author)2008-08-28

thx for the gd ratings guys apreciate it

Lowney (author)Hephestus2009-09-12

Hey thanks for posting but do give credit to K'nex, I know you didn't design this I have the kit too!

harmandbz (author)2009-08-19

hey ppl i know u lot will probably screw at me for takin his side, but i think he is quite clever to put this up, becuz sum ppl (like me) dont have this certain box contain the instrubctions to mak the plane so well done 4 puttin it up! BUT DONT TAKE ALL OF THE CREDIT 4 IT, JUS CUZ U ADDED WHEELS DOESNT MAKE IT UR IDEA!!!!

Lowney (author)harmandbz2009-09-12

He didn't. I have the original set and that had wheels too.

benza (author)2009-09-01

good plane but i agree with ferrari484 was it ur own design????

GTRPLR1995 (author)2009-08-24

Great job. I will build soon.

mrjackknex (author)2009-07-14

Same. Go make your own model not just nick someone's!

Lowney (author)2009-07-11

Hey! You got this from a set! I have it too. Don't say that you designed it all.

J Moneyman (author)2009-01-11

does it float?

the gizmoman (author)2008-11-17

the floats need to be a little bit longer in the back other then that that an alsome airplane

Owenmon (author)2008-10-29

does it float? <.>

ferrari484 (author)2008-08-30

Hey look what's this?????? That looks easy.

agent harmsy (author)ferrari4842008-10-22


Trauts (author)ferrari4842008-08-30

Nice Find!

ferrari484 (author)Trauts2008-10-04

I used that instruction a lot so many times even i can make a nice plane out of my own head

Hephestus (author)2008-08-30

Has anyone made this or thinking of making this or was it just a waste of my time ot mak it :P

PUD612 (author)Hephestus2008-08-30

Hey man glad you posted this when i was given Knex as a kid, i had the Yellow box, and this plane was in a promo book that came with the kit, and i always tried to copy it, but ran out of parts, i since brought the Green kit, and have jus finished the plane, i also added a wind up motor to the prop

Hephestus (author)PUD6122008-09-07

cool good for you

Trauts (author)2008-08-29

I like that you added those disguised wheels so it can move instead of slide since knex doesn't cope well with water. 5 stars!

PUD612 (author)Trauts2008-08-30

Yo dude, Sea Planes also have wheels :P they can land in runways aswell, they just fold them up into the floats when landing on water

Trauts (author)PUD6122008-08-30


I_am_Canadian (author)2008-08-30

this is the #1 rated knex on instructables!

bedbugg2 (author)2008-08-29

thats really good!

crankyjew (author)2008-08-28

hmm, i dont usually care about these k'nex 'ibles, but this is pretty cool... it seems like something i wouldve built back when i had my k'nex. your photos are pretty good, try using a flash diffuser. there are plenty of good 'ibles around here on how to make one.

Whaleman (author)2008-08-28

That is a pretty good model!

apples!!!!! (author)2008-08-28

Congratulations 5*s

The Jamalam (author)2008-08-28

nice, a 4.5 star rating from me!

I_am_Canadian (author)2008-08-28

Nah-hiees! Thats aweome! Enjoy 5 well-deserved stars.

shadowninja31 (author)2008-08-28

Its Good! 5*

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